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  • 更新日期:2018-01-17
  • Interactions of single nanoparticles in nematic liquid crystal
    J. Mol. Liq. (IF 3.648) Pub Date : 2018-01-16
    M. Škarabot, A.V. Ryzhkova, I. Muševič
    更新日期:2018-01-17
  • Optical and structural properties of oxidation resistant colloidal bismuth/gold nanocomposite: An efficient nanoparticles based contrast agent for X-ray computed tomography
    J. Mol. Liq. (IF 3.648) Pub Date : 2018-01-16
    S. Dadashi, R. Poursalehi, H. Delavari

    Optical and biomedical applications of bismuth-based nanostructures could be limited due to the particle oxidation in aqueous media. To overcome this limitation, a two-step process including Nd:YAG pulsed laser ablation of bismuth and chemical reaction for shell formation have been developed to fabricate Bi/Au nanoparticles. The nanoparticles have been extensively characterized by various method including transmission electron microscopy, scanning electron microscopy, energy-dispersive X-ray spectroscopy, X-ray diffraction, optical extinction and MNPBEM simulation package using boundary element method. The prepared bismuth nanoparticles by laser ablation in toluene demonstrate a narrow size distribution with mean size of 40 nm and gold shell were synthesized on Bi core with 7 nm thickness. In optical transmission, the wavelength of maximum absorption peak due to surface plasmon resonance was at 562 nm for gold thickness between 5 and 7 nm. MNPBEM simulation results predict the trends of the experimental observation including the spherical shape and shell thickness. Oxidation resistance of nanoparticles was studied via optical extinction spectroscopy. Oxidation resistance is one of the important factors in efficiency of nanoparticles in aqueous solution as CT contrast agents Finally, Bi/Au composite nanoparticles demonstrated higher X-ray attenuation in comparison with commercial iodine molecule.

    更新日期:2018-01-17
  • Further study of optical homogeneous effects in nanoparticle embedded liquid-crystal devices ☆
    J. Mol. Liq. (IF 3.648) Pub Date : 2018-01-16
    Shunsuke Kobayashi, Yukihide Shiraishi, Naoki Toshima, Hirokazu Furue, Kenzou Takeishi, Haruyoshi Takatsu, Kai-Han Chang, Liang-Chy Chien

    Herein, we report the enhancement of electro-optical performances of nanoparticle embedded liquid-crystal devices in the laser speckle pattern reduction, enhancement of viewing angle, and that of color gamut by doping the nano-particles (NPs) of PγCyclodixtrin-ZrO2 (Shiraishi lab) and Aerosil R-812 (EVONIK) into the liquid crystal devices. This report will be done through updating of previous work [] in particular giving physical modeling based on Rayleigh–Gans optical scattering theory and effect of the raising of the effective temperature called Kobayashi temperature due to the exiting of NPs in an LC medium and by conducting simulations.

    更新日期:2018-01-17
  • Flexoelectricity induced spatially modulated phases in ferroics and liquid crystals
    J. Mol. Liq. (IF 3.648) Pub Date : 2018-01-12
    Anna N. Morozovska, Victoria V. Khist, Maya D. Glinchuk, Christian M. Scherbakov, Maxim V. Silibin, Dmitry V. Karpinsky, Eugene A. Eliseev
    更新日期:2018-01-12
  • Nanometric pitch in modulated structures of twist-bend nematic liquid crystals
    J. Mol. Liq. (IF 3.648) Pub Date : 2018-01-12
    M.P. Rosseto, R.R. Ribeiro de Almeida, R.S. Zola, G. Barbero, I. Lelidis, L.R. Evangelista

    The extended Frank elastic energy density is used to investigate the existence of a stable periodically modulated structure that appears as a ground state exhibiting a twist-bend molecular arrangement. For an unbounded sample, we show that the twist-bend nematic phase NTB is characterized by a heliconical structure with a pitch in the nanometric range, in agreement with experimental results. For a sample of finite thickness, we show that the wavevector of the stable periodic structure depends not only on the elastic parameters, but also on the anchoring energy, easy axis direction, and the thickness of the sample.

    更新日期:2018-01-12
  • Photoinduced orientational structures of nematic liquid crystal droplets in contact with polyimide coated~surface
    J. Mol. Liq. (IF 3.648) Pub Date : 2018-01-12
    Sergey A. Shvetsov, Vladimir Yu. Rudyak, Alexander V. Emelyanenko, Natalia I. Boiko, Yan-Song Zhang, Jui-Hsiang Liu, Alexei R. Khokhlov
    更新日期:2018-01-12
  • Soft anchoring effect and magnetic field induced transitions in homeotropic cholesteric liquid crystal layer
    J. Mol. Liq. (IF 3.648) Pub Date : 2018-01-12
    A.N. Zakhlevnykh, V.S. Shavkunov

    We study the influence of anchoring energy on the orientational structure of a cholesteric liquid crystal in a layer with soft homeotropic anchoring on the boundaries. We consider magnetic field induced transition from the uniform homeotropic nematic phase to the cholesteric phase. We show that this phase transition can occur due to the change of external magnetic field, oriented normally to the cell walls, or due to the change of the layer thickness, and can be either the first- or the second order transition. We determine the conditions of the phase transition hysteresis. We show that the variation of anchoring energy causes the change of the phase transition order, and can also lead to occurrence of the planar alignment in the layer. We also propose the method for measurement of the polar anchoring energy. We show that for some values of polar anchoring energy and the layer thickness, the initial uniform homeotropic state becomes unstable relative to small long-wave perturbations periodical along the layer.

    更新日期:2018-01-12
  • Volumetric and viscometric properties of aqueous solutions of sodium amino acids at T = (293.15 to 333.15) K
    J. Mol. Liq. (IF 3.648) Pub Date : 2018-01-11
    Chunyan Chu, Chunying Zhu, Taotao Fu, Youguang Ma
    更新日期:2018-01-11
  • Prominent temperature-response and salt irritation from self-assemblies of polyzwitterion-sodium lauryl sulfonate
    J. Mol. Liq. (IF 3.648) Pub Date : 2018-01-11
    Shiwei Li, Shaohua Gou, Lihua Zhou, Qin Zhang, Kaiqi Yang, Yuanpeng Wu, Qipeng Guo
    更新日期:2018-01-11
  • 更新日期:2018-01-10
  • Equilibrium study of single and binary adsorption of lead and mercury on bentonite-alginate composite: Experiments and application of two theoretical approaches
    J. Mol. Liq. (IF 3.648) Pub Date : 2018-01-10
    Lotfi Sellaoui, Felycia Edi Soetaredjo, Suryadi Ismadji, Yacine Benguerba, Guilherme L. Dotto, Adrián Bonilla-Petriciolet, Alírio E. Rodrigues, Abdelmottaleb Ben Lamine, Alessandro Erto

    The adsorption of Pb(II) and Hg(II) ions on bentonite-alginate composite (BAC) is investigated in both single-compound and binary systems, at three different temperatures. For a better interpretation and comparison, all the adsorption equilibrium isotherms are recorded under identical conditions. A simple examination of all adsorption equilibrium isotherms shows that the bentonite-alginate composite is more effective for Pb (II) adsorption than for Hg (II) and the adsorption capacity is reduced in binary system, reflecting a competitive effect between the Pb (II) and Hg (II). To explain the single and binary processes and the corresponding mechanisms, Hill and competitive Hill models are applied. The adsorption geometry can be determined at different temperatures by an estimation of the number of ions captured per BAC adsorbent site. Based on these models, it is shown that the affinity sequence in all adsorption systems is: Pb (II) - Hg (II). This behavior can be explained and corroborated by an energetic analysis deduced from these models. Finally, in order to deepen the interpretation of single-compound and binary adsorption, the conductor-like screening model (COSMO-RS) was tested and applied to calculate the total interaction energies between heavy metals and BAC adsorbent. The evaluation of energies deduced from COSMO-RS model indicated that the electrostatic misfit interaction energy may play the main role in the heavy metals ions adsorption in tested systems.

    更新日期:2018-01-10
  • Generally trained models to predict drug solubility in N-methyl-2-pyrrolidone + water mixtures at various temperatures
    J. Mol. Liq. (IF 3.648) Pub Date : 2018-01-10
    Elaheh Rahimpour, Mohammad Barzegar-Jalali, Ali Shayanfar, Abolghasem Jouyban
    更新日期:2018-01-10
  • Viscosity estimation of Al2O3, SiO2 nanofluids and their hybrid: An experimental study
    J. Mol. Liq. (IF 3.648) Pub Date : 2018-01-10
    Georgiana Madalina Moldoveanu, Constanta Ibanescu, Maricel Danu, Alina Adriana Minea

    Over the last years, tremendous efforts were dedicated to develop new heat transfer fluids. So, the research on this topic was later on focused on nanofluids, ionanofluids, molten salts and new refrigerants. This article explores two mono-component and one bi-component nanofluid and, to be more specific, it deals with the viscosity study of stabilized Al2O3, SiO2 water based nanofluids and their hybrid (Al2O3 + SiO2 nanoparticles diluted in water). Experimental research showed a non-Newtonian behavior of all tested nanofluids. Alumina nanofluids and the two studied hybrid nanofluids have shear-thinning behavior and silica nanofluid have a shear thickening behavior. More exactly, the overall relative viscosity is higher for alumina nanofluids if compared to SiO2 nanofluid and, by replacing 0.5% of SiO2 with alumina, the viscosity increases if compared to results for SiO2 nanofluid. Few correlations are proposed for a better estimation of the viscosity for Al2O3, SiO2 water based nanofluids. Plus, the viscosity variation with temperature was experimentally studied for the case of hybrid nanofluids, underlying the decreasing of viscosity while temperature rise and the low hysteresis behavior while proposing two equations for the viscosity variation as temperature was increasing.

    更新日期:2018-01-10
  • Novel and economic method of carbon nanotubes synthesis on a nickel magnesium oxide catalyst using microwave radiation
    J. Mol. Liq. (IF 3.648) Pub Date : 2018-01-10
    Elena A. Burakova, Imran Ali, Tatyana P. Dyachkova, Artem V. Rukhov, Evgeny N. Tugolukov, Evgeny V. Galunin, Alexey G. Tkachev, Al Arsh Basheer

    Carbon nanotubes (CNTs) are gaining increased importance in many fields of science and technology due to their unique properties of greater surface area, mechanical strength, electrical and thermal conductivity. A novel method of carbon nanotubes synthesis on a nickel magnesium oxide catalyst using microwave radiation was developed and presented. In the present paper, the possibility of modifying a Ni-MgO catalyst, for carbon nanotube synthesis with microwave radiation (0.8 kW and 2.45 GHz) at the production stage, is studied. The effect of this radiation on the catalyst characteristics (specific surface area, catalytic activity, etc.) is experimentally considered. It is shown that the use of short term exposure to the microwave radiation in preparing the catalyst made it possible to increase its specific surface area from 5.2 to 9.1 m2/g. The implementation of chemical vapor deposition of the catalyst, modified with the microwave radiation for 30 s, contributed to an increase in the yield of a nanostructured material by 40–45%; making carbon nanotubes inexpensive in production. The synthesized carbon nanostructured material predominantly represented multilayered nanotubes with a diameter of 10–40 nm. The developed method was capable to produce 40–45% yield with almost two time's greater surface area. The synthesized carbon nanotubes may be used for various purposes including water treatment due to the economy in production and large surface area.

    更新日期:2018-01-10
  • A simple route to layer-by-layer assembled few layered graphene oxide nanosheets: Optical, dielectric and antibacterial aspects
    J. Mol. Liq. (IF 3.648) Pub Date : 2018-01-10
    Asim Jilani, Mohd Hafiz Dzarfan Othman, Mohammad Omaish Ansari, Mohammad Oves, Ahmed Alshahrie, Imran Ullah Khan, V.K. Sajith

    Thin film is a subject of great interest for energy and environmental applications. Graphene oxide (GO) in this regard can play a vital role in thin film technology because of its extraordinary optoelectronics and environmentally friendly characteristics. Despite the fast development in the GO based material, there are very few reports on optoelectronics and antibacterial activity of GO thin films. Herein, GO thin films of different concentrations have been deposited on glass substrate by spin coating technique. The optical and dielectric properties of GO thin films were determined by the UV–visible technique. Crystallinity nature and grain sizes, dislocation density, and lattice strain were examined through X-ray diffraction. The possible change in the π-π* and n-π* electronic transition and the band gap evaluations of GO thin films were also calculated. Raman spectroscopy was applied to check the quality and defects linked to sp2 breathing modes of GO thin films. Surface chemical state and ratio of C<img border="0" alt="double bond; length as m-dash" src="https://cdn.els-cdn.com/sd/entities/dbnd">C, C<img border="0" alt="single bond" src="https://cdn.els-cdn.com/sd/entities/sbnd">O, O<img border="0" alt="double bond; length as m-dash" src="https://cdn.els-cdn.com/sd/entities/dbnd">C<img border="0" alt="single bond" src="https://cdn.els-cdn.com/sd/entities/sbnd">OH, O<img border="0" alt="single bond" src="https://cdn.els-cdn.com/sd/entities/sbnd">C, and (<img border="0" alt="double bond; length as m-dash" src="https://cdn.els-cdn.com/sd/entities/dbnd">O)<img border="0" alt="single bond" src="https://cdn.els-cdn.com/sd/entities/sbnd">O were investigated through X-rays photoelectron spectroscopy. GO thin films were also subjected for antibacterial activity tests towards Bacillus cereus and Serratia marcescens and significantly inhibit the bacterial growth in both solid and liquid media. The results emphasise the potential uses of GO thin films in optoelectronics, environmental, and medical device coating for protection against various infectious agents.

    更新日期:2018-01-10
  • Light-induced order modification – The way to speed up
    J. Mol. Liq. (IF 3.648) Pub Date : 2018-01-10
    Andrey Iljin
    更新日期:2018-01-10
  • Effects of chemical modification of PVA by acrylamide, methacrylamide and acrylonitrile on the growth rate of gas hydrate in methane-propane-water system
    J. Mol. Liq. (IF 3.648) Pub Date : 2018-01-10
    Hadi Roosta, Ali Dashti, S. Hossein Mazloumi, Farshad Varaminian

    In this work, two different series of modified polyvinyl alcohols (PVAs) were synthesized for evaluation of their performance as novel inhibitors of hydrate growth. In the first series, three monomers including acrylamide (AM), methacrylamide (MAM), and acrylonitrile (AN) were grated onto PVA to produce graft copolymers. This series of modified PVAs which contains PVA-g-AM, PVA-g-MAM, and PVA-g-AN, decreased the growth rate of methane-propane hydrate, although their performance was weak in comparison with a well-known kinetic hydrate inhibitor such as polyvinylpyrrolidone (PVP). Among the graft copolymers, PVA-g-AM had the best performance. The second series of modified PVAs including PVA-AM, PVA-MAM, and PVA-AN were synthesized by functionalization of PVA with three demonstrated monomers. Some of these modified PVAs decreased significantly the hydrate formation rate and had superior performance, such that PVA-AM showed even better performance in comparison with PVP and decreased the hydrate growth rate to 75%. Also, the inhibition effects of some other functionalized PVAs were significant. The adsorption of synthesized polymers on hydrate surface was also evaluated by zeta potential measurement for better understanding of the modified PVAs performance as inhibitor of hydrate growth. In addition, surface tension measurement of modified PVAs solutions, investigation of molecular structures, and analysis of some probable mechanisms for inhibitory effects of modified PVAs showed that functionalized PVAs have high potential for application as novel inhibitors of hydrate growth.

    更新日期:2018-01-10
  • Understanding the heat capacity enhancement in ionic liquid-based nanofluids (ionanofluids)
    J. Mol. Liq. (IF 3.648) Pub Date : 2018-01-10
    K. Oster, C. Hardacre, J. Jacquemin, A.P.C. Ribeiro, A. Elsinawi

    Nanofluids, systems consisting of a base fluid and dispersed nanoparticles, have attained a large scientific interest recently, mainly due to unusual enhancement in their thermal properties like the thermal conductivity and heat capacity. While both molecular solvents and ionic liquids have been examined, ionic liquids are known for the specific properties caused by the interactions occurring in these systems. Physical properties of very mixtures containing an ionic liquid and nanoparticles still remain not fully investigated and analyzed in the literature, to date. One of the possible issues which limits the fundamental understanding of such systems is related to the determination of the mechanism explaining the unusual enhancement of the thermal properties, in particular the heat capacity. The aim of this work is to discuss the mechanism of heat capacity enhancement of several ionic liquid-based nanofluids doped with carbon nanotubes, boron nitride and graphite, based on the experimental data of density and heat capacity determined as the function of the nanofluid composition and temperature from (298.15 to 363.15) K at 0.1 MPa.

    更新日期:2018-01-10
  • Kinetics of the adsorption of scandium and cerium ions in sulfuric acid solutions on a nanomodified activated carbon
    J. Mol. Liq. (IF 3.648) Pub Date : 2018-01-10
    I.V. Burakova, A.E. Burakov, A.G. Tkachev, I.D. Troshkina, O.A. Veselova, A.V. Babkin, Wei Moe Aung, Imran Ali

    The adsorption of rare-earth elements (cerium and scandium) on pristine and nanomodified activated carbons in sulfuric acid solutions simulating the composition of multi-metallic ore leaching solutions was studied. New applications of scandium and cerium in industry, which constitute the main segment of wastewater pollution, were described. Various materials used to extract target metals were considered. A hybrid material based on carbon nanotubes-modified coconut shell activated carbon was proposed, and its structural and physico-chemical characteristics were described. The kinetic parameters of the adsorption of the rare earth elements studied, as well as adsorption rate constants, were determined. The optimum adsorption time was found to be 60 min. It was established that the process of adsorbing the cerium and scandium ions is driven by mixed diffusion, and the adsorption kinetics can also be satisfactorily described using the pseudo-first order model for all the ions. Thus, both physical adsorption and chemical interactions among the metal ions and the adsorbent functional groups can be assumed to take place during the extraction of the cesium and scandium ions.

    更新日期:2018-01-10
  • Medium controlled photochemistry of Provitamin D: From solutions to liquid crystals
    J. Mol. Liq. (IF 3.648) Pub Date : 2018-01-09
    Olga Dmitrenko, Tetiana Orlova, Irina Terenetskaya
    更新日期:2018-01-10
  • Levaquin drug complexing property towards platinum and palladium metal ions: Thermodynamic studies in aqueous solutions
    J. Mol. Liq. (IF 3.648) Pub Date : 2018-01-09
    Ahmed E. Fazary, Mutasem Z. Bani-Fwaz, Khaled F. Fawy, Hisham S.M. Abd-Rabboh
    更新日期:2018-01-10
  • Liquid crystal/polymer fiber mats as sensitive chemical sensors
    J. Mol. Liq. (IF 3.648) Pub Date : 2018-01-09
    Junren Wang, Antal Jákli, John L. West
    更新日期:2018-01-10
  • Concentration dependence of phase retardation and optical response of stressed liquid crystal systems based on nematic liquid crystal pentyl-cyanobiphenyl
    J. Mol. Liq. (IF 3.648) Pub Date : 2018-01-09
    O. Kurochkin, O. Buluy, N. Aryasova, V. Nazarenko, J. Varshal, M. Manevich, J.L. West, Yu Reznikov

    In this work we have explored the effect of the polymer concentration and the shear magnitude on the switching characteristics of a stressed liquid crystal cell comprised of a LC oriented by polymer network. The possibilities of ultra-fast switching of the cells upon removal of an electric field were experimentally demonstrated. We achieved the dark state for 11 μm cell in <1 ms. This promises great potential for application in fast optical elements based on liquid crystals.

    更新日期:2018-01-10
  • Synthesis and characterization of graphitic magnetic mesoporous nanocomposite and its application in dye adsorption
    J. Mol. Liq. (IF 3.648) Pub Date : 2018-01-09
    Hongling Dai, Xiaoming Peng, Weiyan Yang, Fengping Hu, Zumin Qiu, Zouyu Xiang
    更新日期:2018-01-10
  • The Role of Solvent and Neutral Organophosphorus Extractant Structure in their Organization and Association
    J. Mol. Liq. (IF 3.648) Pub Date : 2018-01-09
    Michael J. Servis, David T. Wu, Jenifer C. Shafer

    The choice of organic solvent is known to impact metal ion partitioning in solvent extraction systems, although an understanding based on molecular interactions has been largely qualitative. To provide a more quantitative and molecular scale understanding of extractant and solvent association in liquid-liquid solvent extraction systems, molecular dynamics studies of binary extractant/solvent systems are conducted for several organophosphorus solvating extractants across a range of organic solvents. Classical molecular dynamics potentials for the extractants are optimized in pure phase simulations. These potentials are then validated with binary extractant/solvent solutions by comparison to experimental data for percent volume change on mixing and mixing enthalpies. Trends in association free energy, mixing enthalpy and deviations from ideal mixing volume are reported for each extractant and solvent binary mixture. Contributions to those properties depending on extractant and solvent molecular structure are investigated, including the relative enthalpic favorability of extractant solutions in toluene, diethyl ether or n-hexane. Inclusion of the ether group in diethyl ether lowered the enthalpy of mixing to a similar degree as reducing the alkane solvent chain length from n-dodecane to n-hexane owing to dipole-dipole interactions with the “head” and “tail” regions of the extractant molecules, which depend on extractant alkyl chain length. Despite similar percent volume changes on mixing with n-hexane or diethyl ether, extractant/toluene mixtures were significantly more enthalpically favorable with an enthalpy of mixing minimum controlled by stoichiometry rather than volume fraction, as observed for alkane solvents.

    更新日期:2018-01-09
  • Measurement and correlation of the physical properties of aqueous solutions of ammonium based ionic liquids
    J. Mol. Liq. (IF 3.648) Pub Date : 2018-01-09
    Nur Ani Kartikawati, Rizwan Safdar, Bhajan Lal, Muhammad Ibrahim Bin Abdul Muthalib, Azmi Mohd Shariff

    In this study, thermo physical properties such as density, viscosity, refractive index and surface tension of aqueous solutions of tetramethylammonium hydroxide (TMAOH), tetraethylammonium hydroxide (TEAOH), tetrapropylammonium hydroxide (TPAOH) and tetrabutylammonium hydroxide (TBAOH) was investigated as a function of temperature. These properties were measured in temperatures ranging from 298.15 to 333.15 K and the temperature was increased by an interval of 5 K from 298.15 K and after 303.15 K, it was increased by an interval of 10 K, while the concentrations of all the aqueous solutions were changed from 2.5 to 30 mass percent. The results revealed that the measured properties of all aqueous ILs are inversely related to temperature, while the increase in concentration had different effects on these properties. In the case of density, an increase in the concentration of ILs TMAOH and TEAOH increased their density, while the increase in the concentration of TPAOH and TBAOH decreased their density. On the other hand, the viscosities and refractive indices of all aqueous ILs increased with an increase in concentration, but the surface tensions decreased with the increase in concentration. The derived properties including thermal expansion and excess molar volume of all the aqueous ILs were determined using density data. The thermal expansion data showed an increasing trend with an increase in the temperatures and concentrations of ILs whereas the negative values of excess molar volumes decreased with an increase in temperatures. The correlation of thermo physical properties with temperatures exhibits a good agreement between experimental and predicted values.

    更新日期:2018-01-09
  • Manifestation of cluster excitations in dielectric properties of water vapor and liquid water as well as their heat capacity
    J. Mol. Liq. (IF 3.648) Pub Date : 2018-01-09
    Viktor N. Makhlaichuk, Nikolay P. Malomuzh

    The main attention in this work is focused on the physical nature of the effective polarizability of water molecules in water vapor and liquid water. We will show that the main contribution to the effective polarizability of water vapor is formed by thermal vibration excitations of water dimers. At approaching the critical point this contribution becomes considerably greater than that caused by deformations of electron shells. In parallel with this we also show that the specific increase of the heat capacity of water vapor is mainly caused by the intramolecular vibrations and vibration excitations of water dimers. We propose a new method for the determination of dimer concentration in water vapor. This approach is generalized for the description of effective polarizability for liquid water. It is assumed that water can be considered as an ensemble of tetramers and dimers in wide temperature interval of liquid states. We analyze peculiarities of their thermal excitations in dense surroundings and their contributions to the effective polarizability of molecules. There is concentration of dimers, arising because of disintegration of tetramers, calculated.

    更新日期:2018-01-09
  • Studies on DNA binding properties of new Schiff base ligands using spectroscopic, electrochemical and computational methods: Influence of substitutions on DNA-binding
    J. Mol. Liq. (IF 3.648) Pub Date : 2018-01-09
    Arezoo Jamshidvand, Mehdi Sahihi, Valiollah Mirkhani, Majid Moghadam, Iraj Mohammadpoor-Baltork, Shahram Tangestaninejad, Hadi Amiri Rudbari, Hadi Kargar, Reza Keshavarzi, Sajjad Gharaghani
    更新日期:2018-01-09
  • Construction of two-ionic liquid-based aqueous two-phase systems for extraction of pyritinol hydrochloride
    J. Mol. Liq. (IF 3.648) Pub Date : 2018-01-09
    Mengyao Fang, Yujuan Chen, Yuanchao Pei, Zhijun Wang, Kelei Zhuo, Guangyue Bai
    更新日期:2018-01-09
  • Effects of mixed adsorption layers of 6 – mercaptopurine – Triton X-100 and 6 – mercaptopurine – Tween 80 on the double layer parameters at the mercury/chlorates(VII) interface
    J. Mol. Liq. (IF 3.648) Pub Date : 2018-01-08
    A. Nosal-Wiercińska, W. Kaliszczak, M. Grochowski, M. Wiśniewska, T. Klepka

    The mixed adsorption layers of 6 – mercaptopurine (6MP) and neutral detergents at the mercury/chlorates(VII) interface are described. The adsorption parameters for the double electrical layer were calculated from the differential capacity measurements extrapolated to zero frequency. It was found that 6 – mercaptopurine dominates in the formation of adsorption equilibria of the studied mixture. Competitive adsorption between the 6 – mercaptopurine-Triton X-100 and 6 – mercaptopurine – Tween 80 or mixed micelles cannot be excluded.

    更新日期:2018-01-09
  • 更新日期:2018-01-09
  • Visible–light responsive BiOBr nanoparticles loaded on reduced graphene oxide for the photocatalytic degradation of dye
    J. Mol. Liq. (IF 3.648) Pub Date : 2018-01-08
    Amani M. Alansi, Maha Al-qunaibit, Ibrahim O. Alade, Talal F. Qahtan, Tawfik A. Saleh
    更新日期:2018-01-09
  • Solubility of celecoxib in {2-propanol (1) + water (2)} mixtures at various temperatures: Experimental data and thermodynamic analysis
    J. Mol. Liq. (IF 3.648) Pub Date : 2018-01-08
    Abolghasem Jouyban, Sara Nozohouri, Fleming Martinez

    The objective of the present investigation is to study the effect of a cosolvent (2-propanol) on the solubility of celecoxib at different temperatures. The measured solubility data using the shake-flask method were correlated/predicted by cosolvency and thermodynamic models. The solubility of celecoxib is increased with the addition of 2-propanol to the aqueous solutions and increased temperature leads to enhance the solubility of celecoxib in a given solvent composition and reaches a maximum value in neat 2-propanol. The results show that 2-propanol is an adequate solubilizing agent for celecoxib. The developed cosolvency and thermodynamic models i.e. Jouyban-Acree and van't Hoff models are capable to predict the solubility of celecoxib in different fractions of {2-propanol + water} solvent mixtures at various temperatures. Furthermore, apparent thermodynamic quantities of the dissolution processes were calculated by using the Gibbs and van't Hoff equations, as well as the preferential solvation of the drug, which was calculated based on the Inverse Kirkwood-Buff integrals method.

    更新日期:2018-01-09
  • Screening of ionic liquids as green oilfield solvents for the potential removal of asphaltene from simulated oil: COSMO-RS model approach
    J. Mol. Liq. (IF 3.648) Pub Date : 2018-01-08
    Zeeshan Rashid, Cecilia Devi Wilfred, Nirmala Gnanasundaram, Appusamy Arunagiri, Thanabalan Murugesan
    更新日期:2018-01-09
  • Ion foam flotation of neodymium: From speciation to extraction
    J. Mol. Liq. (IF 3.648) Pub Date : 2018-01-08
    Cyril Micheau, Olivier Diat, Pierre Bauduin
    更新日期:2018-01-09
  • Interpretation of the GHz to THz dielectric relaxation dynamics of water in the framework of the coupling model
    J. Mol. Liq. (IF 3.648) Pub Date : 2018-01-08
    K.L. Ngai

    The microscopic origins of the processes in water observed at temperatures above and below room temperature by dielectric relaxation spectroscopy in the range from GHz to beyond THz are identified by three sequential and interrelated contributions in the framework of the Coupling Model. Appearing after vibration and boson peak is the caged water dynamics. Cage decays with the onset of the primitive relaxation of the Coupling Model (CM), which in turn is the precursor of the nearly exponential structural α-relaxation. These sequential processes explain the nearly Debye α-loss peak, the high frequency power law (HFPL) associated with it, and the higher frequency dispersion before reaching the vibrational contributions. High frequency and short time experimental data of several glass-formers obtained by different techniques are presented to show the same three processes with the same relationship between them, as proposed for water. Crucial supports of the CM explanation come from neutron scattering experiments on water showing that: (1) caging and decaging indeed occurs in the HFPL regime; (2) the dynamics of the HFPL is independent of the scattering vector Q, in accord with the HFPL is comprised of caged dynamics and local primitive relaxation; and (3) the terminal process is normal diffusion, justifying the 20 GHz dielectric loss peak originates from the structural α-relaxation, which follows after the completion of decaging and primitive relaxation, i.e. with the end of the HFPL regime.

    更新日期:2018-01-09
  • Potential use of smart coatings for corrosion protection of metals and alloys: A review
    J. Mol. Liq. (IF 3.648) Pub Date : 2018-01-08
    Ahmed Abdel Nazeer, Metwally Madkour

    Development of a new environmentally safe coating for corrosion protection of metallic surfaces attracted great interest in material science through the past few years. Smart self-healing coatings showed promising corrosion protection of metals and alloys in different technological applications due to releasing the active agents of the coat in a controllable manner for preventing cracks propagation in the protective coat. These coatings possess passive matrix functionality and actively responds to changes in the local environment which make it prompted great interest from material scientists. Smart coatings are made of responsive materials containing unique chemical, physical, mechanical and electrical characteristics. These smart coating are response and interactive with the different environmental changes such as pressure, heat and chemical effects. The smart coatings are generally classified in the basis of preparation techniques, functional and reactive components and their uses and applications. Typical coatings include: self-healing, self-cleaning, microcapsule healing and anticorrosion coatings. In the process of protection of metallic substrates, smart coatings have multi tasks such as sensing, protection and healing. This review aims to highlights the most recent advances about smart coatings with self-healing properties. Preparation of the different smart coatings and its application for different substrates is also reviewed.

    更新日期:2018-01-09
  • 更新日期:2018-01-09
  • Measuring the viscosity of Fe3O4-MWCNTs/EG hybrid nanofluid for evaluation of thermal efficiency: Newtonian and non-Newtonian behavior
    J. Mol. Liq. (IF 3.648) Pub Date : 2018-01-07
    Afshin Ahmadi Nadooshan, Hamed Eshgarf, Masoud Afrand

    In the present study, the rheological behavior of Fe3O4-MWCNTs/ethylene glycol hybrid nanofluid was investigated for different volumetric fractions (0.1, 0.25, 0.8, 1.25, and 1.8%) comprising equal amounts of suspended iron oxide (Fe3O4) nanoparticles and multi-walled carbon nanotubes (MWCNTs) within the temperature and shear ranges of 25 to 50 °C and 12.24 to 73.44 s−1, respectively. The results indicated that the nanofluid demonstrates a Newtonian behavior at volume fractions of 0.1, 0.25, 0.45, and 0.8%, whereas it demonstrates a non-Newtonian behavior at volume fractions of 1.25 and 1.8% similar to the power law model with an exponent lower than 1. Moreover, it was observed that viscosity is directly proportional to volume fraction, and inversely proportional to temperature. Then, the effect of nanoparticles and nanotubes on the thermal performance of ethylene glycol inside a pipe of heat exchanger was evaluated and the results revealed that an increase in the volume fraction at all temperatures leads to increased pressure drop and heat transfer coefficient. Finally, the results were used to develop an experimental equation as a function of temperature and volume fraction to estimate nanofluid viscosity in the simulations. The predicted values by the equation were in a very good agreement with the experimental results.

    更新日期:2018-01-07
  • Vapor-liquid equilibrium and diffusion coefficients of R32 + [HMIM][FEP], R152a + [HMIM][FEP] and R161 + [HMIM][FEP]
    J. Mol. Liq. (IF 3.648) Pub Date : 2018-01-07
    Xiangyang Liu, Pei Pan, Maogang He

    In this paper, new data for the solubilities and diffusion coefficients of difluoromethane (R32), fluoroethane (R161) and 1,1-difluoroethane (R152a) in ionic liquid 1-hexyl-3-methylimidazolium tris(pentafluoroethyl)trifluorophosphate ([HMIM][FEP]) at temperatures ranging from 293 K to 343 K and at pressures up to 0.5 MPa were presented. The solubilities of R32, R161 and R152a in [HMIM][FEP] can be improved by decreasing the temperature and increasing the pressure. With the increasing temperature, the diffusion coefficients and Henry's law constants of the three hydrofluorocarbons both increase. The solubilities and diffusion coefficients of R32, R152a, and R161 in [HMIM][FEP] were correlated well with the NRTL equation and the Wilke-Chang equation, respectively.

    更新日期:2018-01-07
  • The influence of NaCl concentration on the (LiCl-KCl) eutectic system and temperature dependence of the ternary system
    J. Mol. Liq. (IF 3.648) Pub Date : 2018-01-07
    Jie Wu, Jia Wang, Haiou Ni, Guimin Lu, Jianguo Yu

    To explore the complex correlation between local structure and properties in the alkali chlorides ternary system, simulations were systematically conducted for 11 different (Li, Na, K) Cl compositions from 900 K to 1200 K as the fundamental study of magnesium chloride electrolysis. For the ternary system, the density was calculated across the full composition and database was established. Furthermore, the structure simulation results revealed that the coordination of Li-Cl pair tended to be a distorted tetrahedron and the Na-Cl and K-Cl pairs tended to be an octahedron. The prediction of the properties was compared with available experiments and extrapolated analytical data, the deviations are acceptable. The temperature had no significant effects on the local structure and thermal conductivity. The results also showed that the Tosi−Fumi potential predicted positive temperature dependence of self-diffusion coefficients and ionic conductivity, and negative temperature dependence of the viscosity. In addition, the correlation between the local structure and transport properties was explored. The hydrodynamic radius of Li+ and K+ is similar in the ternary system, it can be found that whilst the K+ ion diffuses as an atomic species, the Li+ ion carries at least some of its coordinating Cl− ions in the diffusion process, giving the diffusing species a larger effective size than the bare ion.

    更新日期:2018-01-07
  • 更新日期:2018-01-07
  • Novel cationic surfactants based on waste frying oil for cleaning water surface from petroleum films: Synthesis, antimicrobial and surface properties
    J. Mol. Liq. (IF 3.648) Pub Date : 2018-01-06
    Ahmed H. Tantawy, Mohamed A. Abo-Riya, Samia M. Abdallah, Wagdy El-Dougdoug
    更新日期:2018-01-07
  • 更新日期:2018-01-07
  • The unusual visible fluorescence violating the Kasha's rule suggests the aggregation of guanidinium carbonate in its aqueous medium
    J. Mol. Liq. (IF 3.648) Pub Date : 2018-01-06
    Biswajit Biswas, Prashant Chandra Singh

    Guanidinium salt solutions are one of the important electrolytes which have been extensively used for understanding the folding/unfolding mechanism of proteins. The structure of aqueous Gdm2CO3 has been controversial as some studies suggest that the hetero ion pairing takes place which leads to the aggregation whereas other studies does not support the idea of ion pairing. In this paper, we have used the steady state, time resolved fluorescence methods and density functional theory to understand the structure of guanidinium carbonate (Gdm2CO3) in terms of ion pairing as well as aggregation. The structure of the aqueous Gdm2CO3 has been controversial as some studies suggests that the Interestingly, Gdm2CO3 does not have any aromatic chromophore but it shows the broad visible fluorescence in the aqueous medium. Moreover, the fluorescence spectrum depicts a strong excitation dependent feature violating the Kasha's Rule. The concentration dependent emission, excitation, lifetime fluorescence along the density functional theory studies clearly suggests the formation of different size of aggregated clusters of Gdm2CO3 which causes the visible fluorescence of aqueous Gdm2CO3 violating the Kasha's rule.

    更新日期:2018-01-06
  • Theoretical studies of the influence of nanoparticle dopants on the ferroelectric properties of a ferroelectric liquid crystal
    J. Mol. Liq. (IF 3.648) Pub Date : 2018-01-06
    S. Shoarinejad, R. Mohammadi Siahboomi, M. Ghazavi

    Recently, ferroelectric liquid crystals (FLCs) doped with nanoparticles have received extensive interest owing to their fascinating fundamental and technological perspectives. The purpose of this paper is to present our theoretical attempt to study the effects caused by ferroelectric nanoparticles on the properties of a ferroelectric liquid crystal. Our study is based on an extended thermodynamic model of the ferroelectric smectic C (SmC*) phase near the transition to the corresponding smectic A (SmA) phase. We have used the modified Landau free energy, developed for statistical mechanics of the spherical nanoparticles immersed in a FLC medium. The response time of the FLC dispersed ferroelectric nanoparticles is investigated under an applied electric field. The rotational viscosity is also calculated with the possible variation in temperature and the nanoparticle concentration. The obtained results, for the goldstone mode, show a faster response time for the nanodoped system as compared to the pure one. Moreover, a remarkable difference between the rotational viscosities of the pure and doped systems is observed. The variations of polarization and tilt angle are calculated as well. The obtained results for both pure and nanodoped FLC system, near the transition temperature, show the influence of dispersed ferroelectric nanoparticles on the FLC polarization and confirm that the tilt angle is not significantly affected by the presence of the particles. Also, slightly lower spontaneous polarization is revealed for a ferroelectric nanodoped system. Calculations based on this model show a good agreement with the recent experimental findings.

    更新日期:2018-01-06
  • Thermodynamic and dynamical heterogeneities during glass transition of water
    J. Mol. Liq. (IF 3.648) Pub Date : 2018-01-05
    Yi Ye, Nanying Ning, Ming Tian, Liqun Zhang, Jianguo Mi

    Understanding the glass transition of water is still a major scientific challenge. Here we propose a dynamic density functional renormalization group approach to analyze the liquid–liquid phase transitions and diffusion dynamics of water molecules under supercooling condition. We find that, as the temperature approaches the glass transition point, the metastable phase transition displays the confined critical scaling behavior, and the dynamic correlation length actually diverges simultaneously. The predicted glass temperature is 142.5 K, close to the experimental value of 136 K. These results suggest a deep coupling feature of the thermodynamic and dynamical heterogeneities during the glass transition of supercooled water.

    更新日期:2018-01-06
  • A new proposed thermodynamic model for aqueous polymer solutions
    J. Mol. Liq. (IF 3.648) Pub Date : 2018-01-05
    Poorya Mobalegholeslam, Golasa Moayyedi, Amirhossein Amiri Majed
    更新日期:2018-01-06
  • Investigation of the conduction properties of ionic liquid crystal electrolyte used in dye sensitized solar cells
    J. Mol. Liq. (IF 3.648) Pub Date : 2018-01-05
    R. Atasiei, M. Raicopol, C. Andronescu, A. Hanganu, A.L. Alexe-Ionescu, G. Barbero

    To investigate the conduction properties of ionic liquid crystal electrolytes and to correlate them to their molecular structure, two electrolytes based on imidazolium iodides have been chosen for a comparative study: one ionic liquid crystal (1-dodecyl-3-methylimidazolium iodide) (C12) and one ionic liquid (1-hexyl-3-methylimidazolium iodide) (C6). For the electrical characterization of the samples the impedance spectroscopy technique (EIS) has been used in the frequency range 1 MHz ÷ 10 mHz. For both electrolytes three frequency domains have been singled out. At large frequencies a hopping mechanism ensures the relative high conductivity of ionic liquids. A good fit of the conductivity data with respect to temperature with a Vogel-Tamman-Fulcher (VTF) equation has been done. The interesting result is that although C12 has a higher viscosity than C6 and thus a smaller conductivity was expected the observed conductivity is actually larger, this fact being attributed to the smectic A liquid crystal order of C12. At medium frequencies and especially at low frequencies the buildup of double layers by the electrodes is well observed. Assuming that in this region (10 Hz ÷ 10 mHz) the cell is equivalent to an electric circuit formed by the parallel of a resistance, R0, and a capacitance, C0, the simple Debye relaxation model, characterized by one relaxation time, has been modified taking into account the adsorption phenomenon in the Langmuir approximation. A theoretical interpretation of the experimental results based on the double layer model is presented.

    更新日期:2018-01-05
  • Prigogine-Flory-Patterson evaluation of systems with ionic liquids + water or methanol: A study of specific interactions
    J. Mol. Liq. (IF 3.648) Pub Date : 2018-01-05
    Dheiver Santos, Hisham S. Bamufleh, Hasan Uslu

    Descriptions of the assets of combinations of ionic liquids and polar compounds are very important for engineering projects. In this study, the modeling of binary systems involving different cations and anions was performed to observe the structural influence and the level of interaction with water and alcohol. The Prigogine-Flory-Patterson equation of state makes possible the evaluation of the level of interaction of the mixture through the Flory interaction contribution. The contribution through the characteristic pressure was shown to be of little relevance compared to the contributions of free volume and characteristic pressure. The binary mixtures, for the most part, showed a negative value, which demonstrates the strong interactions between ionic liquids and the studied compounds.

    更新日期:2018-01-05
  • 更新日期:2018-01-05
  • Interfacial tensions of pyridinium-based ionic liquids and n-alkanes or n-alkanols
    J. Mol. Liq. (IF 3.648) Pub Date : 2018-01-04
    Andrea Moneo, Víctor Antón, Santiago Martín, Ignacio Gascón, Carlos Lafuente
    更新日期:2018-01-05
  • The chemical potential of a dipole in dipolar solvent at infinite dilution: Mean spherical approximation and Monte Carlo simulation
    J. Mol. Liq. (IF 3.648) Pub Date : 2018-01-04
    A.V. Bandura, M.F. Holovko, S.N. Lvov

    A new analytical expression was derived for the chemical potential of a hard sphere dipole in hard sphere dipole fluid at infinite dilution of the solute using the mean spherical approximation (MSA). A set of Monte Carlo (MC) simulations has been carried out to investigate the scope of applicability of the derived equation. The mean reaction field (MRF) approach was used in our MC computations. Two different MC methods (Widom particle insertion and thermodynamic integration) were applied for obtaining the chemical potential change associated with the dipole creation at the solute particle to provide adequate accuracy of the MC simulations. Also, corresponding changes in the mean potential energy were calculated by direct method and by thermodynamic integration. The solvation energies have been obtained for the systems of dipolar hard spheres with reduced dipole moment 1.0 at the reduced densities 0.2, 0.5, and 0.8. Computations have been made for solute particles with the reduced dipole moment varied from 0.0 to 1.5 and the hard sphere diameter varied from 0.5 to 2.0. The variation of those quantities with the molecular parameters was analyzed and compared with the MSA equation and Kirkwood classical expressions. It was found that the MSA calculations agree relatively well with MC simulations at densities less than 0.5 and solute dipole moment less than 1.0.

    更新日期:2018-01-05
  • Adsorption process of n-alkanes onto BAX-1100 activated carbon: Theoretical estimation of isosteric heat of adsorption and energy distribution of heterogeneous surfaces
    J. Mol. Liq. (IF 3.648) Pub Date : 2018-01-04
    Manel Bergaoui, Asma Nakhli, Shaheen Al-Muhtaseb, Mohamed Khalfaoui

    Adsorption of the n-alkane series, C1–C7, on Westvaco BAX-1100 activated carbon were measured over very broad ranges of temperature (293–393 K) and pressure (0.06–4964 Torr), depending on the n-alkane. Different behaviors of experimental adsorption isotherms were observed where various steps were noticed depending on the adsorbate length. A heterogeneous Gauss-monolayer model was developed based on statistical physics approach to evaluate the adsorption energy distribution (AED). Surface heterogeneity was evaluated and confirmed from isosteric heat of adsorption; where the adsorption of longer n-alkanes is energetically more favorable. A new equation was obtained from AED analysis to calculate the isosteric heat of adsorption. A notable difference between the adsorption isosteric heats estimated from AEDs and those obtained from classical Clausius-Clapeyron equation was observed at very low and high capacities. This difference was explained by the fact that, the gas behaves non-ideally at high pressure range. On the other hand, the absolute percentage deviation in adsorbed phase heat capacity was evaluated from the isosteric heat of adsorption predicted from the AED analysis. This percentage deviation increases when increasing the chain length of the alkane.

    更新日期:2018-01-05
  • 更新日期:2018-01-05
  • Pyrazole, pyrazolone and enaminonitrile pyrazole derivatives: Synthesis, characterization and potential in corrosion inhibition and antimicrobial applications
    J. Mol. Liq. (IF 3.648) Pub Date : 2018-01-04
    Galal H. Sayed, Mohammad E. Azab, Kurls E. Anwer, Mahamad Abdel Raouf, Nabel A. Negm

    Six pyrazole and pyrazolone derivatives namely: 3-amino-1-phenyl-5-pyrazolone (1), 3-amino-1-(2,4-dinitrophenyl)-5-pyrazolone (2), 1H-pyrazole-3,5-diamine-4-(2-phenyldiazenyl) (3), 1-phenyl pyrazole-3, 5-diamine, 4-[2-(4-methylphenyl) diazenyl] (4), 1H-pyrazole-3,5-diamine, 4-[2-(4-methylphenyl) diazenyl] (5), 5-amino-1,3–diphenyl-1H-pyrazolecarbonitrile (6) were synthesized and evaluated as corrosion inhibitors for copper alloy dissolution in basic medium. Corrosion inhibition evaluation was performed using weight loss, polarization and electrochemical impedance measurements. The results showed that the prepared compounds have high efficiency as corrosion inhibitors for dissolution prevention of copper in NH4OH solution at pH of 9. The prepared compounds were evaluated for their antimicrobial activities against gram positive and gram negative bacteria using inhibition zone diameter measurements. The results revealed that the synthesized compounds have higher antibacterial activities than the conventional bactericide agents. The results of the antimicrobial activities and the corrosion inhibition tendencies of these compounds were correlated to their chemical structures.

    更新日期:2018-01-04
  • Extraction of organic compounds involved in the kinetic resolution of rac-2-pentanol from n-hexane by imidazolium-based ionic liquids: Liquid-liquid equilibrium
    J. Mol. Liq. (IF 3.648) Pub Date : 2018-01-04
    Mercedes G. Montalbán, Mar Collado-González, A. Abel Lozano-Pérez, F. Guillermo Díaz Baños, Gloria Víllora
    更新日期:2018-01-04
  • Effect of ion exchange in NaAOT surfactant on droplet size and location of dye within Rhodamine B (RhB)-containing microemulsion at low dye concentration
    J. Mol. Liq. (IF 3.648) Pub Date : 2018-01-04
    Abbas Rahdar, Mohammad Almasi-Kashi, Asad Muhammad Khan, Mousa Aliahmad, Anayatollah Salimi, Moez Guettari, Havva Esmailzaee Ghale Kohne
    更新日期:2018-01-04
  • Enhanced synthesis of silver nanoparticles by combination of plants extract and starch for the removal of cationic dye from simulated waste water using response surface methodology
    J. Mol. Liq. (IF 3.648) Pub Date : 2018-01-04
    Shafia Muzaffar, Hajira Tahir

    In the present study, starched silver nanoparticles (St-AgNPs) were synthesized by using polyphenolic compounds from aqueous extracts of Malus domestica-Green Delicious (MD-GD) and Lagenaria siceraria (LS) with starch. This combination not only gears up the synthesizing parameters but also the removal efficiency of dyes making it facile to be used on industrial scale. The surface morphology of pure, crystalline and non-agglomerated, spherical NPs was determined by X-Ray Diffraction (XRD) and Scanning Electron Microscopy (SEM) techniques. The reduction of Ag+ 1 to Ag0 by polyphenolic compounds from green reducing agents and their stabilization by starch was confirmed by Fourier Transform Infrared spectroscopy (FTIR) studies. St-AgNPs were then employed for the removal of industrial dye, Malachite Green (MG) by adsorption method. Response surface methodology (RSM) was employed to optimize the operating parameters (OP) including sorbent dosage, contact time, dye concentration and temperature. % Removal Efficiency (%RE) at optimized OP was found to be 85.01% and 95.90% for St-AgNPs-MD-GD and St-AgNPs-LS, respectively. It was observed that the Langmuir isotherm was best fitted for the St-AgNPs-MD-GD system while for other systems Dubinin–Radushkevich (D-R) was established more feasible at higher temperatures. The thermodynamic study was also conducted and ΔG°, ΔS°, and ΔH° were estimated. The kinetics of dye removal depicted the pseudo second order rate constant for St-AgNPs-MD-GD system, whereas pseudo first order was observed for the St-AgNPs-LS system. Desorption of dye from adsorbent and pHpzc were also investigated. The cost evaluation of adsorbent per cubic meter was also found. It was about 126.5US$ for St-AgNPs-MD-GD and 58.10US$ for St-AgNPs-LS. The results obtained from the present study represent that this improved process can be employed on the industrial scale in economical way.

    更新日期:2018-01-04
Some contents have been Reproduced with permission of the American Chemical Society.
Some contents have been Reproduced by permission of The Royal Society of Chemistry.
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