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  • MoO3-Containing Protonated Nitrogen Doped Carbon as a Bifunctional Catalyst for One-Step Synthesis of 2,5-Diformylfuran from Fructose
    ACS Sustainable Chem. Eng. (IF 5.951) Pub Date : 2017-11-20
    Jun Zhao, Anjali Jayakumar, Zhong-Ting Hu, Yibo Yan, Yanhui Yang, Jong-Min Lee
    更新日期:2017-11-20
  • Microwave-Induced Desalination via Direct Contact Membrane Distillation
    ACS Sustainable Chem. Eng. (IF 5.951) Pub Date : 2017-11-20
    Sagar Roy, Madihah Saud Humoud, Worawit Intrchom, Somenath Mitra
    更新日期:2017-11-20
  • Synthesis of Tung-Oil-Based Triglycidyl Ester Plasticizer and Its Effects on Poly(vinyl chloride) Soft Films
    ACS Sustainable Chem. Eng. (IF 5.951) Pub Date : 2017-11-20
    Jie Chen, Yigang Wang, Jinrui Huang, Ke Li, Xiaoan Nie
    更新日期:2017-11-20
  • High Voltage Electrical Treatments To Improve the Protein Susceptibility to Enzymatic Hydrolysis
    ACS Sustainable Chem. Eng. (IF 5.951) Pub Date : 2017-11-20
    Sergey Mikhaylin, Nadia Boussetta, Eugène Vorobiev, Laurent Bazinet
    更新日期:2017-11-20
  • Nanoscale Observation of Microfibril Swelling and Dissolution in Ionic Liquids
    ACS Sustainable Chem. Eng. (IF 5.951) Pub Date : 2017-11-20
    Junli Xu, Baocai Zhang, Xingmei Lu, Yihua Zhou, Jinyun Fang, Yao Li, Suojiang Zhang
    更新日期:2017-11-20
  • Co-granulation of low rates of graphene and graphene oxide with macronutrient fertilizers remarkably improves their physical properties
    ACS Sustainable Chem. Eng. (IF 5.951) Pub Date : 2017-11-20
    Shervin Kabiri, Roslyn Baird, Diana N.H. Tran, Ivan B. Andelkovic, Michael J. McLaughlin, Dusan Losic

    The beneficial effects of graphene (GN) and graphene oxide (GO) additives on the physical properties of monoammonium phosphate (MAP) fertiliser granules were investigated. Low doses (0.05 to 0.5% w/w) of GN and GO sheets were co-granulated with MAP and effects on the crushing strength, abrasion and impact resistance of prepared granules were evaluated. Co-granulation with 0.5% w/w GN sheets (MAP-GN) significantly enhanced the mechanical strength of MAP granules (~18 times improvement) while inclusion of same amounts of GO sheets (MAP-GO) improved the strength to a lesser extent (~8 times improvement). The co-granulation of GN also improved MAP granules resistance to abrasion (>70 %) and impact resistance (>75 %). Heating MAP-GO granules at 50°C after granulation is shown to enhance their physical properties in comparison to MAP-GO granules dried under ambient temperatures. The advantages of GN and GO sheets compared with current additives in enhancing the physical properties of MAP granules are explained by their high specific area, superior nanofiller-matrix and adhesion/interlocking ability arising from their unique wrinkled structures and two-dimensional (2D) geometry. These results confirm the potential of GN/GO additives to enhance the physical properties of MAP granules that could be translated to other fertilizers and applied in the industry.

    更新日期:2017-11-20
  • Does a strong oxophilic promoter enhance direct deoxygenation? A study of NiFe, NiMo, and NiW catalysts in p-cresol conversion
    ACS Sustainable Chem. Eng. (IF 5.951) Pub Date : 2017-11-19
    Pei-Ju Hsu, Jia-Wei Jiang, Yu-Chuan Lin

    A bifunctional catalyst, composed of a hydrogenation active metal and an oxophilic promoter for CAr-O bond weakening, is effective in the deoxygenation of lignin derivatives due to a contact synergy. A systematic comparison of the physicochemical properties of Ni-based catalysts promoted by metal oxides (i.e., FeOx, MoOx, and WOx) with different extent of oxophilicity was conducted, and their catalytic behaviors were evaluated in the conversion of p-cresol. Ni promoted by WOx displays the highest oxophilicity among all promoters and is intrinsically more active than NiMo and NiFe in direct deoxygenation (DDO); this characteristic is possibly related to its great hydride mobility. However, in an H2-pressured system, Ni promoted by MoOx, which has moderate oxophilicity compared with the employed promoters, generated more DDO product (toluene) than NiFe and NiW did. This study discovered that this discrepancy between the result of the chemical test under normal pressure and the result of the reaction test in an authentic pressurized system concerning the relation between toluene yield and a promoter’s oxophilicity is related to different hydrogenation rates of toluene. Toluene derived from DDO of p-cresol can be subsequently hydrogenated and thus be turned into methylcyclohexane more rapidly by the NiW catalyst than by NiMo and NiFe catalysts. Hence, both the oxophilicity of a promoter and the inertness of hydrogenation of toluene should be considered in designing a bimetallic catalyst in the conversion of lignin derivatives.

    更新日期:2017-11-20
  • Green Fabrication of Regenerated Cellulose/Graphene Films with Simultaneous Improvement of Strength and Toughness by Tailoring the Nanofiber Diameter
    ACS Sustainable Chem. Eng. (IF 5.951) Pub Date : 2017-11-19
    Tongping Zhang, Xiaofang Zhang, Yuwei Chen, Yongxin Duan, Jianming Zhang

    The development of green and facile synthesis techniques for flexible, transparent and conductive films (FTCFs) is in great demand with the rapid consumption of electronics. Herein, we report the environmental friendly and one-pot fabrication of regenerated cellulose nanofibers (CNF)/graphene FTCFs directly from raw materials of cellulose and graphite based on ionic liquid. As prepared FTCFs exhibit simultaneous and extraordinary improvement of tensile strength (135.4 %) and toughness (459.1%) with graphene loading of only 0.1 wt%. Besides the contribution of graphene sheets as reinforced filler, the morphology analysis reveals that the diameter size of regenerated CNF plays the key role on tailoring the mechanical properties of regenerated CNF/graphene film. Meanwhile, our results show that the diameter of regenerated CNF is dependent on the dispersion state of graphene sheets. The disruptive self-assembling of cellulose molecules in regeneration process induced by the hydrophobic interaction between graphene sheets and cellulose chains is proposed to explain the reduction of diameter size of regenerated CNF in the presence of graphene. The high performance FTCFs fabricated by such simple and green strategy have the potential in large-scale industrial applications.

    更新日期:2017-11-20
  • Green Synthesis of Gold Nanoparticles Coupled with Nucleic Acid Oxidation
    ACS Sustainable Chem. Eng. (IF 5.951) Pub Date : 2017-11-17
    Tatsuki Kunoh, Minoru Takeda, Syuji Matsumoto, Ichiro Suzuki, Mikio Takano, Hitoshi Kunoh, Jun Takada
    更新日期:2017-11-19
  • Environmentally Sustainable Fabrication of Cu1.94S-rGO Composite for Dual Environmental Application: Visible-Light-Active Photocatalyst and Room-Temperature Phenol Sensor
    ACS Sustainable Chem. Eng. (IF 5.951) Pub Date : 2017-11-17
    Suvanka Dutta, Sourav Biswas, Ram Chandra Maji, Rajnarayan Saha
    更新日期:2017-11-19
  • Pretreatment in Hot Glycerol for Facile and Green Separation of Chitin from Prawn Shell Waste
    ACS Sustainable Chem. Eng. (IF 5.951) Pub Date : 2017-11-17
    Ramamoorthy Devi, Raghavachari Dhamodharan
    更新日期:2017-11-19
  • Approach for Polygodial Extraction from Pseudowintera colorata (Horopito) Leaves Using Deep Eutectic Solvents
    ACS Sustainable Chem. Eng. (IF 5.951) Pub Date : 2017-11-17
    Joanna Nadia, Kaveh Shahbaz, Marliya Ismail, Mohammed M. Farid
    更新日期:2017-11-19
  • A Review of Clathrate Hydrate Nucleation
    ACS Sustainable Chem. Eng. (IF 5.951) Pub Date : 2017-11-17
    Maninder Khurana, Zhenyuan Yin, Praveen Linga
    更新日期:2017-11-19
  • 更新日期:2017-11-19
  • 2D/2D g-C3N4/MnO2 Nanocomposite as a Direct Z-Scheme Photocatalyst for Enhanced Photocatalytic Activity
    ACS Sustainable Chem. Eng. (IF 5.951) Pub Date : 2017-11-17
    Pengfei Xia, Bicheng Zhu, Bei Cheng, Jiaguo Yu, Jingsan Xu
    更新日期:2017-11-19
  • In Situ Preparation of Mo2C Nanoparticles Embedded in Ketjenblack Carbon as Highly Efficient Electrocatalysts for Hydrogen Evolution
    ACS Sustainable Chem. Eng. (IF 5.951) Pub Date : 2017-11-17
    Dezhi Wang, Junchao Wang, Xiaonan Luo, Zhuangzhi Wu, Lei Ye
    更新日期:2017-11-19
  • Improving the dewaterability of sewage sludge using rice husks and Fe2+-sodium persulfate oxidation
    ACS Sustainable Chem. Eng. (IF 5.951) Pub Date : 2017-11-17
    Qiao Xiong, Min Zhou, Hong Yang, Mengjia Liu, Teng Wang, Yiqie Dong, Haobo Hou

    Physical conditioners or skeleton builders are usually used to improve the dewaterability of sewage sludge. In this study, low-cost rice husk (RH) was evaluated as an alternative skeleton builder and combined with Fe2+ and sodium persulfate (SPS) for sewage sludge conditioning. The results show that the sewage sludge conditioned with RH and Fe2+/SPS showed good dewaterability, and the capillary suction time (CST) was reduced by 92.8 % under optimal conditions. Using response surface methodology (RSM), the optimal composite conditioner concentrations were 151.5 mg/g dry solid (DS) of SPS, 46 mg/g DS of Fe2+ and 333 mg/g DS of RH. After conditioning with Fe2+/SPS, some extracellular polymeric substances (EPS) were destroyed, which resulted in the dissolved protein and polysaccharide amounts in the filtrate increasing. The water content analysis indicated the bound water was converted to free water because of the EPS degradation. The particle size analysis showed that the sludge flocs became smaller. After the addition of RH, the sludge formed a stratified, porous structure that improved the sludge compressibility and provided outflow passages for free water, which enhanced the sludge dewaterability. These results indicated that combining persulfate oxidation with RH conditioning is a promising strategy to improve sludge dewaterability.

    更新日期:2017-11-19
  • Low-temperature transformation of C/SiO2 nanocomposites to β-SiC with high surface area
    ACS Sustainable Chem. Eng. (IF 5.951) Pub Date : 2017-11-17
    Xiong-fei Zhang, Zhouyuan Chen, Yi Feng, Jianhao Qiu, Jianfeng Yao

    Mesoporous silicon carbide (SiC) nanostructures were synthesized by magnesiothermic reduction of carbon-silica (C/SiO2) nanocomposites at a low temperature of 700 °C by using furfuryl alcohol as the carbon source. The phase, morphology and structure of the as-prepared samples were characterized by a combination of X-ray diffraction, scanning electron microscopy, transmission electron microscopy, Fourier transform infrared spectra, X-ray photoelectron spectroscopy, thermo-gravimetric analysis and N2 adsorption. The starting C/SiO2 composites exhibited an interpenetrating network and the resulting SiC preserved the mesoporous properties of the original templates. The SiC products were of β-SiC phase and showed a high surface area (786 m2/g). The reaction mechanism and role of intermediate species (Mg2Si) were explored in detail. Furthermore, the resulting β-SiC exhibits remarkable electromagnetic wave absorption with a minimum reflection loss of -17.2 dB and reflection loss bandwidth < -10 dB of 3.7 GHz.

    更新日期:2017-11-19
  • Bio-extrusion of broken rice in the presence of divalent metal salts: effects on starch microstructure and phenolics compounds
    ACS Sustainable Chem. Eng. (IF 5.951) Pub Date : 2017-11-17
    Enbo Xu, Zhengzong Wu, Zhengyu Jin, Osvaldo H. Campanella

    Broken rice has become more popular to be sustainably used due its low-cost and potential utilization for preparing purified/modified starches and fermented products. The use of broken rice as substrate of an enzymatic extrusion process modified by divalent metal salts was investigated. Six metal salts with concentrations 0.6, 1.2 and 1.8 mmol/100g (db of starch) were pre-mixed with a thermostable α-amylase and with broken rice before being extruded. Extrudates were characterized using RVA, X-ray, FT-IR and SEM techniques. RVA results showed that Mg(II), Ca(II), Mn(II) and Zn(II) decreased extrudate viscosity whereas Fe(II) and Cu(II) increased it compared to extrusion performed in absence of salts. DNS test demonstrated that non-transition metals Mg(II) and Ca(II) activated the enzyme and improved the extrusion performance, while transition metals Mn(II), Fe(II), Cu(II) and Zn(II), inhibited the activity of the enzyme. X-ray Diffraction (XRD) showed that all ions contributed to slightly increase the extrudate crystallinity. Holes of various sizes were observed on the surface of the extruded material when salts were used, indicating changes in enzymatic action. The residual content of phenolics increased when the ions Mg(II), Ca(II), and Mn(II) were used while the hydrogen (rather than electron) donating capacity of phenolics was slightly influenced.

    更新日期:2017-11-19
  • Sandwiched Fe3O4/Carboxylate Graphene Oxide Nanostructures Constructed by Layer-by-Layer Assembly for Highly Efficient and Magnetically Recyclable Dye Removal
    ACS Sustainable Chem. Eng. (IF 5.951) Pub Date : 2017-11-17
    Rong Guo, Tifeng Jiao, Ruifei Li, Yan Chen, Wanchun Guo, Lexin Zhang, Jingxin Zhou, Qingrui Zhang, Qiuming Peng

    Two-dimensional (2D) carbon nanomaterials generally display some limitations in adsorption applications due to easy agglomeration. To solve this problem, as-synthesized sandwiched nanocomposites made of Fe3O4 nanoparticles, poly(allylamine) hydrochloride molecules and carboxylate graphene oxide sheets, were prepared using a layer-by-layer (LbL) self-assembly method. The successfully-synthesized sandwiched structures in the present nanocomposites have outstanding organic dye adsorption performance, stability, and recycling. The agglomeration of carboxylate graphene oxide was reduced with increased specific surface area because the Fe3O4 nanoparticles play important roles in interpenetrating and supporting graphene oxide sheets layers. In comparison with other kinds of composite adsorbents, the preparation process of the present new sandwiched composite materials is facile to operate and regulate, which demonstrates potential large-scale applications in wastewater treatment and dye removal.

    更新日期:2017-11-19
  • Effect of Carbon Dots on Conducting Polymers for Energy Storage Applications
    ACS Sustainable Chem. Eng. (IF 5.951) Pub Date : 2017-11-16
    Balamurugan Devadas, Toyoko Imae
    更新日期:2017-11-17
  • Mechanochemical Metal-Free Transfer Hydrogenation of Carbonyls Using Polymethylhydrosiloxane as the Hydrogen Source
    ACS Sustainable Chem. Eng. (IF 5.951) Pub Date : 2017-11-16
    Alain Y. Li, Andreanne Segalla, Chao-Jun Li, Audrey Moores
    更新日期:2017-11-17
  • Synthesis of poly-p-phenylene terephthalamide (PPTA) in ionic liquids
    ACS Sustainable Chem. Eng. (IF 5.951) Pub Date : 2017-11-16
    Sven Dewilde, Tom Vander Hoogerstraete, Wim Dehaen, Koen Binnemans

    Several ionic liquids (ILs) were tested for their suitability to synthesize the aramid polymer PPTA in an attempt to diminish the dependence on the toxic N-methylpyrrolidone (NMP) that is currently used in industry. The room-temperature IL 3-methyl-1-octylimidazolium chloride ([C8MIM][Cl]) showed the highest promise as with this medium the polycondensation reaction proceeds with a similar mechanism as it happens in the solvent mixture of NMP with CaCl2. With this IL, PPTA polymer with an inherent viscosity of 1.95 dL/g was obtained in a low-temperature polycondensation reaction. This is the highest reported molecular mass of PPTA to date that was obtained by polymerization in an ionic liquid. An EXAFS and solid state NMR spectroscopic study showed that [C8MIM][Cl] and the current industrial solvent of NMP and CaCl2 show similar characteristics when it comes to the synthesis of PPTA.

    更新日期:2017-11-17
  • Photocatalytic and Photoluminescence Properties of Core–Shell SiO2@TiO2:Eu3+,Sm3+ and Its Etching Products
    ACS Sustainable Chem. Eng. (IF 5.951) Pub Date : 2017-11-16
    Meiqi Chang, Yanhua Song, Jie Chen, Lei Cui, Zhan Shi, Ye Sheng, Haifeng Zou
    更新日期:2017-11-16
  • Design of a Unique Energy-Band Structure and Morphology in a Carbon Nitride Photocatalyst for Improved Charge Separation and Hydrogen Production
    ACS Sustainable Chem. Eng. (IF 5.951) Pub Date : 2017-11-16
    Jesús Barrio, Lihua Lin, Xinchen Wang, Menny Shalom
    更新日期:2017-11-16
  • Sustainable Design of Hierarchically Porous Ag3PO4 Microspheres through a Novel Natural Template and Their Superior Photooxidative Capacity
    ACS Sustainable Chem. Eng. (IF 5.951) Pub Date : 2017-11-16
    Subrata Mandal, Rajakumar Ananthakrishnan
    更新日期:2017-11-16
  • Aerated Fluidized Bed Treatment for Phosphate Recovery from Dairy and Swine Wastewater
    ACS Sustainable Chem. Eng. (IF 5.951) Pub Date : 2017-11-16
    Alon Rabinovich, Ashaki A. Rouff, Beni Lew, Marlon Ramlogan

    An aerated fluidized bed reactor (aerated-FBR) was used for recovery of orthophosphate (PO4-P) from dairy (D-WW) and swine (S-WW) wastewater by struvite (MgNH4PO4·6H2O) precipitation. Model wastewater solutions (S-model, D-model) free of organic material were also treated. The maximum PO4-P recovery for treated livestock wastes was 94% for S-WW and 63% for D-WW. The PO4-P recovery did not improve for S-model compared to S-WW, but increased to 81% for D-model relative to D-WW, suggesting the high organic content of D-WW may hinder the recovery process. X-ray diffraction (XRD) analysis of recovered solids revealed that treated S-WW produced mostly struvite (95-98%) while D-WW yielded a mixture of struvite (28-33%), calcite (CaCO3) (17-55%) and monohydrocalcite (CaCO3·H2O) (13-42%). The Fourier transform infrared (FTIR) spectra of the solids confirm the presence of vibrational bands associated with these minerals. Simultaneous thermal analysis (STA) indicated that all solids, except for D-WW, show thermogravimetric (TG) trends consistent with the struvite and calcium carbonate content. The D-WW solids had additional TG steps, possibly due to high organic and colloidal content, and slightly improved ammonium stability. The aerated-FBR treatment is an effective method to reduce PO4-P from livestock wastewater through precipitation of pure struvite and struvite/calcium carbonate mixtures.

    更新日期:2017-11-16
  • Perspectives for Implementing Distributed Generation in Developing Countries through Modeling Techniques
    ACS Sustainable Chem. Eng. (IF 5.951) Pub Date : 2017-11-16
    Luis Fabian Fuentes-Cortes, José María Ponce-Ortega

    This paper addresses the status, problems and development of distributed energy resources in developing countries. We have focused on the projects in Latin America, Asia, Eastern Europe and North Africa. The problems for developing new energy technologies are linked to the particular conditions as regulated markets, energy policies, urban planning and development, low-income communities, environmental impact and economic instability. We are presenting a perspective based on the literature review of the different proposals for solving the particular problems associated to the implementation of energy projects under the modeling perspective, highlighting the residential environment and domestic applications. Five different fields used on modeling approaches are included in the review: technologic development, economic performance, environmental impact, social context and modeling proposals. We have identified the addressed problems, the applied modeling techniques, the trends showed by the results presented and the expectations for future works in the field of distributed generation.

    更新日期:2017-11-16
  • Recycle gallium and arsenic from GaAs based e-wastes via pyrolysis-vacuum metallurgy separation: theory and feasibility
    ACS Sustainable Chem. Eng. (IF 5.951) Pub Date : 2017-11-16
    Lu Zhan, Fafa Xia, Yuhan Xia, Bing Xie

    This work proposed a novel method of pyrolysis and vacuum metallurgy to recycle gallium and arsenic from GaAs based e-wastes, which may cause arsenic contamination and gallium waste if treated improperly. As a typical GaAs based e-wastes, light emitting diode (LED) was studied in this paper. Pure GaAs chips were firstly adopted to study the vacuum separation behavior of gallium and arsenic. Then, GaAs chips and packaging materials were mixed together to study the effect of packaging materials pyrolysis on the subsequent vacuum metallurgy separation behavior of GaAs chips. It indicated that gallium and arsenic can be recycled efficiently at the heating temperature of 1273 K, the holding time of 60 min, the vacuum pressure of ~20 Pa, and the total recovery efficiency can reach to 95 wt.%. The recovered gallium and arsenic were condensed and collected in respective zones. However, due to the effect of organic materials pyrolysis, some gallium was oxidized as gallium oxides, while arsenic was influenced little. This study will reveal the speciation transformation of gallium and arsenic during vacuum heat treatment, which can provide the theoretical foundation for recycling gallium and arsenic from LED and other GaAs based e-wastes through pyrolysis and vacuum metallurgy separation.

    更新日期:2017-11-16
  • Selective Conversion of Renewable Furfural with Ethanol to Produce Furan-2-acrolein Mediated by Pt@MOF-5
    ACS Sustainable Chem. Eng. (IF 5.951) Pub Date : 2017-11-15
    Liangmin Ning, Shengyun Liao, Hongge Cui, Linhao Yu, Xinli Tong
    更新日期:2017-11-16
  • Environmental, Economic, and Scalability Considerations and Trends of Selected Fuel Economy-Enhancing Biomass-Derived Blendstocks
    ACS Sustainable Chem. Eng. (IF 5.951) Pub Date : 2017-11-15
    Jennifer B. Dunn, Mary Biddy, Susanne Jones, Hao Cai, Pahola Thathiana Benavides, Jennifer Markham, Ling Tao, Eric Tan, Christopher Kinchin, Ryan Davis, Abhijit Dutta, Mark Bearden, Christopher Clayton, Steven Phillips, Kenneth Rappé, Patrick Lamers
    更新日期:2017-11-16
  • 更新日期:2017-11-16
  • Metalloporphyrin Polymers with Intercalated Ionic Liquids for Synergistic CO2 Fixation via Cyclic Carbonate Production
    ACS Sustainable Chem. Eng. (IF 5.951) Pub Date : 2017-11-15
    Yaju Chen, Rongchang Luo, Qihang Xu, Jun Jiang, Xiantai Zhou, Hongbing Ji
    更新日期:2017-11-16
  • Free Ammonia Pretreatment Improves Degradation of Secondary Sludge During Aerobic Digestion
    ACS Sustainable Chem. Eng. (IF 5.951) Pub Date : 2017-11-15
    Qilin Wang, Wei Wei, Sitong Liu, Mingquan Yan, Kang Song, Jingjing Mai, Jing Sun, Bing-Jie Ni, Yanyan Gong
    更新日期:2017-11-16
  • Selective Separation of Methacrylic Acid and Acetic Acid from Aqueous Solution Using Carboxyl-Functionalized Ionic Liquids
    ACS Sustainable Chem. Eng. (IF 5.951) Pub Date : 2017-11-15
    Yinge Bai, Ruiyi Yan, Wenhui Tu, Jianguo Qian, Hongshuai Gao, Xiangping Zhang, Suojiang Zhang
    更新日期:2017-11-16
  • Plasma catalysis as an alternative route for ammonia production: status, mechanisms, and prospects for progress
    ACS Sustainable Chem. Eng. (IF 5.951) Pub Date : 2017-11-15
    Jungmi Hong, Steven Prawer, Anthony B. Murphy

    Plasma catalysis has drawn attention from the plasma and chemical engineering communities in the past few decades as a possible alternative to the long-established Haber–Bosch process for ammonia production. The highly reactive electrons, ions, atoms and radicals in the plasma significantly enhance the chemical kinetics, allowing ammonia to be produced at room temperature and atmospheric pressure. However, despite the promise of plasma catalysis, its performance is still well short of that of the Haber–Bosch process. This is at least in part due to the lack of understanding of the complex mechanisms underlying the plasma–catalyst interactions. Gaining such an understanding is a prerequisite for exploiting the potential of plasma catalysis for ammonia production. In this perspective, we discuss possible benefits and synergies of the combination of plasma and catalyst. The different regimes of plasma discharges and plasma reactor configurations are introduced and their characteristics in ammonia synthesis are compared. Based on detailed kinetic modelling work, practical ideas and suggestions to improve the energy efficiency and yield of ammonia production are presented, setting out future research directions in plasma catalysis for efficient ammonia production.

    更新日期:2017-11-16
  • Water-based Approach to High-Strength All-Cellulose Material with Optical Transparency
    ACS Sustainable Chem. Eng. (IF 5.951) Pub Date : 2017-11-15
    Xuan Yang, Lars A. Berglund

    All-cellulose composites are usually prepared by a partial cellulose dissolution approach, using of ionic liquids or organic solvents. Here, an all-cellulose film based on moist ramie fibers was prepared by hot-pressing. The original ramie fiber was degummed, alkali-treated, aligned and mounted into a specially designed mold. The wet ramie fiber “cake” was pressed into a transparent film. The structure, mechanical properties, moisture sorption and optical properties of the films were investigated using scanning electron microscopy (SEM), X-ray diffraction, tensile tests, gravimetric method and integrating sphere devices. The all-cellulose films showed an ultimate strength of 620 MPa and a Young’s modulus of 39.7 GPa with low moisture sorption, and optical transmittance of 85%. These eco-friendly all-cellulose films are of interest for laminated composites, as coatings and in photonics applications.

    更新日期:2017-11-16
  • From molecules to Silicon-based biohybrid materials by ball-milling
    ACS Sustainable Chem. Eng. (IF 5.951) Pub Date : 2017-11-15
    Massimiliano Lupacchini, Andrea Mascitti, Lucia Tonucci, Nicola d'Alessandro, Evelina Colacino, Clarence Charnay

    Hybrid nanoparticles with a large bridging organic group were prepared by mechanochemical assisted sol-gel reaction. Planetary ball-mill (PBM) was used for the first time to access the bis-silylated precursors, containing complex functionalities (such as hydantoins or a symmetrical urea obtained from amino esters). The process is based on a sequential reaction pathway involving Liquid Assisted Grinding (LAG) and 1,1’-carbonyldimidazole (CDI)-mediated one-pot/two step reactions. Then, hydantoins and the symmetric urea were used for the one-pot preparation of the corresponding bis-silylated compounds in a vibrational ball-mill (VBM), followed by the mechanochemical sol-gel preparation of bio-hybrid bridged silsesquioxane nanospheres of uniform size.

    更新日期:2017-11-16
  • Perovskite hydroxide CoSn(OH)6 nanocubes for efficient photoreduction of CO2 to CO
    ACS Sustainable Chem. Eng. (IF 5.951) Pub Date : 2017-11-15
    Yan Gao, Lu Ye, Shuyan Cao, Hu Chen, Yanan Yao, Jian Jiang, Licheng Sun

    Perovskite hydroxide CoSn(OH)6 nanoparticles were synthesized and used for the first time in the photocatalytic reduction of CO2 to CO. Under mild reaction conditions and using [Ru(bpy)3](PF6)2 as the photosensitizer, a high photocatalytic efficiency of 19.3 μmol for CO evolution with a high selectivity of 86.46% was obtained. The photocatalytic activity and CO selectivity were further improved by adding weak Brönsted acids, as proton sources, to the system.

    更新日期:2017-11-16
  • Catalyst- and Additive-Free Trifluoromethylselenolation with [Me4N][SeCF3]
    ACS Sustainable Chem. Eng. (IF 5.951) Pub Date : 2017-11-15
    Tao Dong, Jian He, Zhi-Han Li, Cheng-Pan Zhang

    Environment-benign trifluoromethylselenolation of alkyl halides, electron-deficient aryl halides, diaryliodonium triflates, aryldiazonium tetrafluoroborates, and α-diazo carbonyls with the readily accessible [Me4N][SeCF3] salt is described. A large number of structurally diversified substrates, previously trifluoromethylselenolated by metal-SeCF3 complex or under metal-mediated catalysis at elevated temperatures, were smoothly converted in this reaction at room temperature or -40 oC to room temperature without using any catalyst or additive. Yields of the reactions were comparative to or even higher than those of the early reports employing transition metal catalysts. Compared to the known means, advantages of this method include simplicity, sustainability, high speed, low reaction temperatures, mild reaction conditions, a wide range of substrates, and good functional group tolerance. This catalyst- and additive-free protocol allows a mild and straightforward synthesis of various trifluoromethyl selenoethers, and demonstrates the possibility of trifluoromethylselenolation with [Me4N][SeCF3] under greener conditions.

    更新日期:2017-11-16
  • Natural Honeycomb Flavone Chrysin (5,7-dihydroxyflavone)-Reduced Graphene Oxide Nanosheets Fabrication for Improved Bactericidal and Skin Regeneration
    ACS Sustainable Chem. Eng. (IF 5.951) Pub Date : 2017-11-15
    Sathishkumar Gnanasekar, Premkumar Palanisamy, Pradeep K. Jha, Jeyaraj Murugaraj, Manikandan Kandasamy, Asif Mohammed Khan Mohamed Hussain, Sivaramakrishnan Sivaperumal
    更新日期:2017-11-15
  • Cu–MOF-Derived Cu/Cu2O Nanoparticles and CuNxCy Species to Boost Oxygen Reduction Activity of Ketjenblack Carbon in Al–Air Battery
    ACS Sustainable Chem. Eng. (IF 5.951) Pub Date : 2017-11-15
    Jingsha Li, Nan Zhou, Jingya Song, Liang Fu, Jun Yan, Yougen Tang, Haiyan Wang
    更新日期:2017-11-15
  • High Performance Lithium–Sulfur Batteries with a Sustainable and Environmentally Friendly Carbon Aerogel Modified Separator
    ACS Sustainable Chem. Eng. (IF 5.951) Pub Date : 2017-11-14
    Lin Zhu, Liangjun You, Penghui Zhu, Xiangqian Shen, Lezhi Yang, Kesong Xiao
    更新日期:2017-11-15
  • Defective Carbon-Based Materials for the Electrochemical Synthesis of Hydrogen Peroxide
    ACS Sustainable Chem. Eng. (IF 5.951) Pub Date : 2017-11-14
    Shucheng Chen, Zhihua Chen, Samira Siahrostami, Taeho Roy Kim, Dennis Nordlund, Dimosthenis Sokaras, Stanislaw Nowak, John W. F. To, Drew Higgins, Robert Sinclair, Jens K. Nørskov, Thomas F. Jaramillo, Zhenan Bao
    更新日期:2017-11-15
  • Liquid Crystalline Behaviors of Chitin Nanocrystals and Their Reinforcing Effect on Natural Rubber
    ACS Sustainable Chem. Eng. (IF 5.951) Pub Date : 2017-11-14
    Yongwang Liu, Mingxian Liu, Shuyan Yang, Binghong Luo, Changren Zhou
    更新日期:2017-11-15
  • Mechanistic Investigation of Rice Straw Lignin Subunit Bond Cleavages and Subsequent Formation of Monophenols
    ACS Sustainable Chem. Eng. (IF 5.951) Pub Date : 2017-11-14
    Rui Lou, Gaojin Lyu, Shubin Wu, Bin Zhang, Hongxia Zhao, Lucian A. Lucia
    更新日期:2017-11-15
  • Recovery of Phenolic Compounds from Switchgrass Extract.
    ACS Sustainable Chem. Eng. (IF 5.951) Pub Date : 2017-11-15
    Michelle L Lehmann, Robert M. Counce, Robert W Counce, Jack S. Watson, Nicole Labbe, Jingming Tao

    The sorption/desorption of gallic acid, a simple phenolic compound, was studied experimentally in a batch system. The motivation for this project was to provide insight to the recovery of phenolic compounds from switchgrass. Recovery of phenolic compounds could enhance the sustainability and economics of biorefining facilities. The sorption/desorption of gallic acid was shown to be qualitatively similar to that of phenolics extracted from switchgrass; so more extensive studies were made using gallic acid as a surrogate for the complex mixtures of phenolic compounds leached from switchgrass. The kinetics indicate that an approximation of equilibrium was reached within 48 hours. Activated carbon was demonstrated to sorb gallic acid and phenolics from water and aqueous switchgrass leachate. The loading capacity of activated carbon for the gallic acid-water-activated carbon system increased with temperature for 20°C to 60°C. Ethanol was shown to be a preferable elution agent for desorbing gallic acid from activated carbon. Experimental observations and data from this study provide suitable design information that can be used for preliminary evaluation of conceptual designs of an activated-carbon based packed-bed process for recovery of phenolic compounds from aqueous switchgrass leachate.

    更新日期:2017-11-15
  • Photocatalytic decomposition of RhB by newly designed and highly effective CF@ZnO/CdS hierarchical heterostructures
    ACS Sustainable Chem. Eng. (IF 5.951) Pub Date : 2017-11-14
    Zhenjiang Yu, M.Rajesh Kumar, Yang Chu, Haixia Hao, Qingyao Wu, Hongde Xie

    A two-step hydrothermal method was developed to produce CdS nanoparticle–sensitized ZnO nanoneedle heterostructures, which array on copper fiber (CF), and its applications in the field of photocatalyst were also explored. In this novel heterostructures, the CF plays a role in supporting for the carriers of CdS nanoparticles–sensitized ZnO nanoneedles. Furthermore, CF is capable of accelerating the exportation of charge carriers. Therefore, CF@ZnO/CdS hierarchical heterostructures present excellent photocatalytic performance under visible light, enabling the decomposition of organic dyes such as RhB within 60 min, with desirable cycling ability. Due to the sustainability and engineering potential of CF in chemistry, it is easy to be recycled. This method we developed also conformed to the development of green chemistry without using organic solvents in the whole fabrication process of CF@ZnO/CdS hierarchical heterostructures. This work may pave the way for the useful system to realize efficient charge separation and transmission, which could exert significant influence on the large-scale synthesis of photocatalytic materials with low cost and enhanced performance.

    更新日期:2017-11-15
  • Facile Preparation of Magnetic Hypercrosslinked Polymers for the Efficient Removal of Antibiotics from Water
    ACS Sustainable Chem. Eng. (IF 5.951) Pub Date : 2017-11-14
    Yin Liu, Xinlong Fan, Xiangkun Jia, Xin Chen, Aibo Zhang, Baoliang Zhang, Qiuyu Zhang

    A novel method for fabricating magnetic hypercrosslinked polymers (MHCPs) with high Brunauer-Emmett-Teller (BET) specific surface area, large pore volume and good magnetic properties was developed. The synthesis process of MHCPs included two steps: the preparation of hypercrosslinked polymers (HCPs) by external cross-linker and the in situ oxidation of iron source in structure of HCPs. Based on the systematic investigation of the influences of oxidation time and addition amount of hydrogen peroxide, series of MHCPs with different specific surface area, pore volume and mangnetic responsiveness could be controllably prepared, the highest BET specific surface area and maximum saturation magnetization of which were 729.93 m2/g and 12.4 emu/g, respectively. Furthermore, the adsorption performance of MHCPs to antibiotics were studied by using chloramphenicol (CAP) and tetracycline hydrochloride (TC) as model adsorbates. The kinetics isotherms of CAP and TC followed pseudo-second-order model, and the adsorption isotherms of them were proved to fit the Langmuir adsorption model. The maximum adsorption capacity of CAP and TC at the temperature of 20 oC could reach 114.94 and 212.77 mg/g, respectively. The above results showed that the MHCPs would be one of the most promising candidates for application in the adsorption of antibiotics.

    更新日期:2017-11-15
  • Eco-friendly halogen-free flame retardant cardanol polyphosphazene polybenzoxazine networks
    ACS Sustainable Chem. Eng. (IF 5.951) Pub Date : 2017-11-14
    Nagarjuna Amarnath, Divambal Appavoo, Bimlesh Lochab

    We report on the preparation of hexa-functional cardanol (renewable phenolic compound) benzoxazine with a phosphazene core (CPN) for use as a greener eco-friendly halogen-free flame retardant reactive additive for the formation of sustainable polyphosphazene polybenzoxazine networks for flame resistant applications. The structure and purity of the monomer was confirmed by fourier transform infrared (FTIR), nuclear magnetic resonance (1H-, 13C-, 31P-NMR) and gel permeation chromatography (GPC) studies. The CPN monomer showed good compatibility with benzoxazine monomer (CPN0) as suggested by the co-curing studies. The thermal properties of the copolymer can be directly tuned by altering the composition of the monomer blend. The occurrence of phosphazene-phosphazane thermal rearrangement is also suggested for the thermal behaviour (thermogravimetry analysis, TGA) at higher loading of CPN in the monomer feed ratio. An improvement in mechanical properties of the copolymer with increase in glass transition temperature was confirmed by enhancement in crosslink density as compared to neat polybenzoxazine. The reactive nature and presence of phosphazene core improved both the smoke density rating, vertical burning rating and led to higher limiting oxygen index (LOI). The FTIR and scanning electron microscopy (SEM) studies of residual char supported the formation of functionalities and morphologies favorable to support the flame resistance behavior of polymer by incorporation of reactive benzoxazine with phosphazene core. Finally, we demonstrate that incorporation of cardanol phosphazene network has good compatibility with the polybenzoxazine phenolic thermosets with improvement in flame retardancy. The higher cardanol (65.7%) and phosphorous content (3.4%), and reactive nature of synthesised compound is attractive as a sustainable additive with the scope of their utilisation with other polymeric resins.

    更新日期:2017-11-15
  • Ultrafine Bimetallic PdCo Alloy Nanoparticles on Hollow Carbon Capsules: An Efficient Heterogeneous Catalyst for Transfer Hydrogenation of Carbonyl Compounds.
    ACS Sustainable Chem. Eng. (IF 5.951) Pub Date : 2017-11-14
    Basuvaraj Suresh Kumar, Pillaiyar Puthiaraj, Arlin Jose Amali, Kasi Pitchumani

    Monodispersed ultrafine bimetallic palladium-cobalt alloy nanoparticles (PdxCoy) are prepared and immobilized on hollow carbon capsules (HCCs). Studies on the effect of metal compositions on the catalytic activity of the PdxCoy reveal that the nanoparticulate alloy with the ratio of Pd36Co64 is more active than the Co and Pd monometallic nanoparticles in the transfer hydrogenation of carbonyl compounds. The composition of the catalyst and its alloy formation is extensively characterized and variety of ketones and aldehydes are hydrogenated successfully with excellent yield and high turnover number (TON), displaying the ability of the synthesised ultrafine Pd36Co64 bimetallic nanoalloy to attain and retain both high catalytic activity and stability. This catalytic system is heterogeneous, stable and does not require additives for activation. Other advantages include milder reaction conditions (does not use gaseous hydrogen), low metal content (0.17 mol %) for a catalytic transfer hydrogenation reaction, functional group tolerance, environmentally benign nature and reusability.

    更新日期:2017-11-15
  • Sunlight-Induced Selective Photocatalytic Degradation of Methylene Blue in Bacterial Culture by Pollutant Soot Derived Nontoxic Graphene Nanosheets
    ACS Sustainable Chem. Eng. (IF 5.951) Pub Date : 2017-11-14
    Prateek Khare, Anupriya Singh, Sankalp Verma, Anshu Bhati, Amit Kumar Sonker, Kumud Malika Tripathi, Sumit Kumar Sonkar

    Herein, a potential approach is described for assessing the ecological importance of the graphitic nano-carbons isolated from the dirty-dangerous black pollutant particulate material. As black carbon petrol soot, based on a simple experiment of photodegradation and a toxicological test using the natural sunlight as a source of energy for the complete photodegradation of pollutant organic dye as methylene blue (MB). Compared to the artificial source of visible-light (60W incandescent bulb), the sunlight-induced photodegradation using the pollutant petrol soot derived water soluble graphene nanosheets (wsGNS) had shown ~ 1.5 times higher the rate of photodegradation. The toxicological test confirmed the nontoxic behavior of wsGNS against the two different types of bacterial strains: a gram-negative and gram-positive cells as Escherichia coli and Staphylococcus aureus respectively. Moreover, wsGNS are precisely used for the selective photodegradation of MB without harming the bacterial growth from the pool of MB-bacterial strains. Regarding the photocatalytic property of the wsGNS, which is responsible for the dye/selective dye degradation. Three reactive species (holes, superoxide, and hydroxyl radicals) are commonly generated during the process of aqueous phase photodegradation. That is being explained here on the basis of simpler trapping experiments. Nontoxicity and selectivity along with the improved in photodegradation efficiencies by wsGNS under the influence of sunlight are the most significant and sustainable perspectives of the present finding.

    更新日期:2017-11-15
  • Effect of Reaction Time on Phosphate Mineralization from Microalgae Hydrolysate
    ACS Sustainable Chem. Eng. (IF 5.951) Pub Date : 2017-11-14
    Ali Teymouri, Ben J. Stuart, Sandeep Kumar

    The development of algal biorefineries is strongly associated with the nutrient management, particularly phosphorus, which is a limited mineral resource. Flash Hydrolysis (FH) has been widely applied to a variety of algae species to fractionate its constituents. This chemical-free, subcritical water technique was used to extract more than 80 wt% of phosphorus available in the Scenedesmus sp. as water-soluble phosphates in the aqueous phase (hydrolysate). The phosphate-rich hydrolysate was subjected to the Hydrothermal Mineralization (HTM) process at 280 ˚C and 5-90 min of residence time to mineralize phosphates as allotropes of calcium phosphate such as hydroxyapatite (HAp) and whitlockite (WH). In the current study, the effect of reaction time on phosphate mineralization from the hydrolysate as well as the composition, structure and the morphology of the precipitates were studied. Calcium hydroxide and commercial HAp were used as the mineralizer and seeding material, respectively. More than 97 wt% of phosphate and almost 94 wt% of calcium were removed in the first 5 min of the HTM process. Results revealed that as the HTM reaction time increased, calcium phosphate precipitates transformed from WH to carbonated HAp. The integration the proposed mineralization process with FH can be a cost-effective pathway to produce sustainable, and high value phosphate-based bioproducts from algae. The application of HAp includes biomedical applications such as synthetic bone and implant filling, drug delivery, chromatography, corrosion resistance materials, catalytic activities and fertilizers.

    更新日期:2017-11-15
  • Potential nanomedicine applications of multifunctional carbon nanoparticles developed using green technology
    ACS Sustainable Chem. Eng. (IF 5.951) Pub Date : 2017-11-14
    Jadi Praveen Kumar, Rocktotpal Konwarh, Manishekhar Kumar, Ankit Gangrade, Biman B. Mandal

    Carbon nanonmaterial development through green technology is gaining pace owing to their biocompatibility, inertness, modifiability and photoluminescence. These smart nanomaterials are much sought after and have great potential in bioimaging and drug delivery. In this study, we focused on the preparation of carbon nanoparticles (CNPs) using edible yogurt drink (lassi) by microwave irradiation. The physicochemical properties of synthesized CNPs were extensively studied. Results demonstrated that CNPs had average size of 12.58 ± 0.60 nm with zeta potential of -24.62 ± 0.15 mV. Cytocompatibility of CNPs assessed using L929 and rat primary VSMCs, demonstrated enhanced viability after 48 h incubation. At lower concentrations of CNP, intracellular calcium levels remain unaffected in VSMCs. Doxorubicin (Dox) was used as model molecule to evaluate sythesized CNPs for their efficacy in drug delivery. Dox-loaded CNPs (Dox-CNPs) showed pH-dependent (pH 4.6 and 7.4) drug release. Toxicity of Dox-CNPs assessed with MCF-7 and SAS cell lines indicated IC50 values at 0.25 µg/mL. Cell cycle arrest, elevation of reactive oxygen species and loss of inner mitochondrial membrane potential corroborated efficient delivery of Dox to the nuclei with enhanced activity. The successful delivery of drug into the nuclei and its subsequent pH-dependent release projects CNPs as promising drug delivery vehicles in nanomedicine approach.

    更新日期:2017-11-15
  • A green strategy to reduced nano-graphene oxide through microwave assisted transformation of cellulose
    ACS Sustainable Chem. Eng. (IF 5.951) Pub Date : 2017-11-14
    Nejla Erdal, Karin H Adolfsson, Torbjörn Pettersson, Minna Hakkarainen

    A green strategy for fabrication of biobased reduced nano-graphene oxide (r-nGO) was developed. Cellulose derived nano-graphene oxide (nGO) type carbon dots were reduced by microwave assisted hydrothermal treatment with superheated water alone or in the presence of caffeic acid (CA), a green reducing agent. The carbon dots, r-nGO and r-nGO-CA, obtained through the two different reaction routes without or with the added reducing agent, were characterized by multiple analytical techniques including FTIR, XPS, Raman, XRD, TGA, TEM, AFM, UV-Vis and DLS to confirm and evaluate the efficiency of the reduction reactions. A significant decrease in oxygen content accompanied by increased number of sp2 hybridized functional groups was confirmed in both cases. The synergistic effect of superheated water and reducing agent resulted in the highest C/O ratio and thermal stability, which also supported a more efficient reduction. Interesting optical properties were detected by fluorescence spectroscopy where nGO, r-nGO and r-nGO-CA all displayed excitation dependent fluorescence behaviour. r-nGO-CA and its precursor nGO were evaluated with osteoblastic cells MG-63 and exhibited non-toxic behaviour up to 200 μg mL-1, which gives promise for utilization in biomedical applications.

    更新日期:2017-11-15
  • New water treatment index system toward zero liquid discharge for sustainable coal chemical processes
    ACS Sustainable Chem. Eng. (IF 5.951) Pub Date : 2017-11-14
    Peizhe Cui, Yu Qian, Siyu Yang

    Shortage of water resource is the major bottleneck for coal chemical industry development. It is imperative to approach zero liquid discharge for coal chemical processes. Varieties of wastewater treatment processes have been developed, but none of them have yet achieved zero discharge in practice. The water quality of reuse does not meet the requirements, resulting in inactivation of microorganisms in biochemical system and accelerated corrosion and fouling of heat exchangers. These problems can even threatening production and operation. Current water treatment units are pieced simply together leading to unsatisfactory water quality for reuse. Therefore, a new water treatment index system is proposed for ensuring water quality for reuse and zero liquid discharge. In order to establish the water treatment index system, this paper focuses on study of the whole water treatment process. For better illustration, a water treatment process for zero liquid discharge is established. A mass balance is calculated depending on several practical industrial cases. Analysis shows that the content of polyphenols, PAHs, long-chain alkanes, and ammonia nitrogen is the key for water reuse quality. Therefore, concentration limits for these components in the indexes are carefully studied and determined. The indexes at each joint point between units are determined based on data from current existing treatment processes and technical demands of specific treatment units. Depending on the index system, appropriate treating technologies are selected and optimized. We finally give out suggestions on improvement and optimization of water treatment processes for zero liquid discharge.

    更新日期:2017-11-15
  • Nitrogen-Enriched Carbon Nanofiber Aerogels Derived from Marine Chitin for Energy Storage and Environmental Remediation
    ACS Sustainable Chem. Eng. (IF 5.951) Pub Date : 2017-11-14
    Beibei Ding, Shasha Huang, Kai Pang, Yongxin Duan, Jianming Zhang
    更新日期:2017-11-14
  • Supergravity Separation for Cu Recovery and Precious Metal Concentration from Waste Printed Circuit Boards
    ACS Sustainable Chem. Eng. (IF 5.951) Pub Date : 2017-11-14
    Long Meng, Yiwei Zhong, Zhe Wang, Kuiyuan Chen, Xinle Qiu, Huijing Cheng, Zhancheng Guo
    更新日期:2017-11-14
  • Furylated Flavonoids: Fully Biobased Building Blocks Produced by Condensed Tannins Depolymerization
    ACS Sustainable Chem. Eng. (IF 5.951) Pub Date : 2017-11-14
    Laurent Rouméas, Guillaume Billerach, Chahinez Aouf, Éric Dubreucq, Hélène Fulcrand
    更新日期:2017-11-14
  • Catalyzing Cascade Production of Methyl Levulinate from Polysaccharides Using Heteropolyacids HnPW11MO39 with Brønsted/Lewis Acidic Sites
    ACS Sustainable Chem. Eng. (IF 5.951) Pub Date : 2017-11-13
    Xueyan Zhang, Yue Li, Lifang Xue, Shengtian Wang, Xiaohong Wang, Zijiang Jiang
    更新日期:2017-11-14
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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