In this study, we prepared a new-type Ce-Fe impregnated activated carbon (AC) catalyst for the catalytic oxidation of H2S to S at room temperature. Characterization of the Ce-Fe/AC catalysts and the corresponding catalytic activity for H2S removal were analyzed and evaluated. The Ce impregnation not only significantly increases catalytic activity but also decreases O2 demand for H2S removal due to

The electrolyte pH has been determined to be an important factor that has a direct influence on the formation of film morphologies. Herein, we investigate the effect of electrolyte pH on the formation of nickel oxide (NiOx) films in borate solutions and examine their corresponding electrochromic characteristics. The result shows that the formation of hexa-aquo Ni complexes due to an appropriate electrolyte

The photovoltaic (PV) characteristics of solution-coated Cu(In,Ga)Se2 films were effectively improved via a surface sulfurization in this study to overcome the complexity to control the appropriated amounts of sulfur ionsduring the sulfurization process.After sulfurization treatment, the Cu(In,Ga)(Se,S)2 films with double-graded band gap were obtained because the incorporation of sulfur-ion intoCu(In

Thermoresponsive materials are of great interest for medicine, pharmacy and food industry. During the production of these materials they are often taken into their dry state, requiring gentle processes with minimum effect over their properties. In this study, supercritical drying process was used to obtain dry products from thermoresponsive N-Isopropylacrylamide based gels and compared to other typical

We describe the preparation of polymethylmethacrylate/(rice husk ash)/polypyrrole (PMMA/RHA/PPy) composite membranes and their use as active agents for the removal of hexavalent chromium (Cr(VI)) and the organic dyes tartrazine (E102) and indigo carmine (IC). We prepared the membranes following a two-step process: initially, using the electrospinning technique, we obtained PMMA:RHA mats with various

Enhancing electrical conductivity is necessary to widen application of hematite (α-Fe2O3) as efficient photocatalyst for water oxidation. Doping heteroatoms and developing p-n junction are effective ways for improving carrier density and charge transfer. Heteroatoms of Ti and Mn are doped in hematite to establish p-n homojunction using hydrothermal and annealing processes for catalyzing water oxidation

Herein, we propose an excellent absorbent, poly (catechol-tetraethylenepentamine) coating onto SiO2NH2 microsphere, which is fabricated via a simple synthesis route. The effect of different molar ratio of catechol on the adsorption properties of silica modified composite was studied. The poly (catechol-tetraethylenepentamine)@SiO2NH2 ([email protected]) exhibits outstanding adsorption to Cr(VI) compared

To exploit the formation of DNA duplexes, the charge repulsion between complementary DNA strands can be reduced by adding salts or by replacing the negatively charged natural phosphodiester linkage(s) with charge-neutral methyl phosphotriester(s) (MPTE) linkage(s) of the synthetic nDNA oligonucleotides. Recently, we reported prominent improvements of detecting target nucleic acids with nDNA probes

In the present study, experimental and modeling investigations were performed and combined to implement trustworthy paradigms to predict the viscosity value under different circumstances and a wide variety of conditions. The experimental approach was conducted on a considerable number of Iranian crude samples using a Rolling Ball viscometer. Accordingly, more than 1000 experimental points were gained

Green sustainable nitrogen self-doped porous carbon anode material for the use in lithium ion batteries was successfully obtained from chitosan (CS) / cellulose nanocrystal (CNC) biocomposites by facile one step casting-carbonization process. Three main factors–the carbonization temperature, the interfacial compatibility, and the N-doping content—synergistically affected the electrochemical performance

This study examined the use of modified palm oil fuel ash (POFA) prepared from agricultural waste as key material for fabricating the POFA hollow fibre ceramic membrane (PHFCM) to trap arsenite, As(III), and arsenate, As(V), from water. In this study, the ozonation technique was employed where the effects of pre- and post-ozonation on the adsorption capacity of PHFCM and fouling mitigation were investigated

LaMnO3 nanoparticles were synthesized by citric acid complex sol-gel method and used to degrade rhodamine B (RhB) in water. The effects of initial pH value, LaMnO3 dosage, RhB concentration and disrupter agents on the degradation of RhB were investigated. We found that LaMnO3 exhibits an excellent degradation ability of RhB in high acidic conditions without additional oxidants or light irradiation

In this work, the catalytic oxidation of trichloroethylene (TCE) was performed for the first time over the Cu modified ZSM-5 zeolite membrane catalysts prepared via metal-organic chemical vapor deposition (MOCVD). The results displayed that four Cu/ZSM-5/PSSF catalysts with different copper loadings were highly selective to HCl, while the 5Cu/Z (Cu/ZSM-5/PSSF catalyst with copper loading of 5%) exhibited

The use of lignin to prepare fine chemicals is a hot research topic. Here, we propose a strategy for esterification of the syringyl group, which is abundant in lignin, to produce 3,4-dimethoxyphenyl acetic acid ester. Lignin reacts with alcohols over acidic pure silica catalyst, L-MCM-41, to generate 3,4-dimethoxyphenyl acetic acid esters. The esterification yield from alkali lignin (Indulin AT) reached

The exceeding of the heavy metal ions concentration in human body to a certain critical level can lead to serious diseases. Since this critical level is usually of trace value, developing an efficient yet economic method to estimate that value is both desirable and necessary. Based on the ion current rectification behavior of a conical, polyethylene terephthalate nanochannel surface modified by 18-crown-6

Activated carbon–supported titania (ACT) composites were synthesized through a hydrothermal process. Two kinds of titanium precursors (titanium(IV) oxysulfate TiOSO4 liquid and Degussa P25 solid) were used to develop ACT composites (ACT-TiOS and ACT-P25, respectively). The tested amounts of TiOSO4 and P25 were 5 wt.%, 10 wt.%, 15 wt.%, and 20 wt.%. The adsorption capacity and photocatalytic activity

The solid-like oil-in-water (O/W) emulsion can be classified into two types, gelator-induced gel and gelator-free glass, based on the requirement of gelator addition and solidification mechanisms. In this work, the O/W emulsion glass with scanty-water belonging to the gelator-free type was successfully fabricated through a low-energy process even when the content of aqueous surfactant solution was

Porphyrin-based catalytic oxidation of hydrocarbon bonds is considered to be the most representative biomimetic catalysis. To mimic the biomimetic catalytic oxidation of nature under illumination of visible light, a monolayer of meso-tetrakis (1-methylpyridinium-4-yl) porphyrin immobilized sulfonated polysulfone/ polyethersulfone blend membrane ([email protected]/PES) was prepared via a facile electrostatic

Graphitic carbon nitride (g-C3N4) is an excellent polymer photocatalyst to revolutionize the semiconductor field and deprive solar photons from their energies for conversion into chemical energy resulting in degradation of a number of hazardous organic pollutants into harmless compounds. g-C3N4 has fortified its applications in the field of photocatalysis due to its unique nature including high chemical

At present, the use of carbon fiber electrodes as marine sensors for marine signal exploration has received much attention. AC impedance is the crucial factor affecting the performance of sensor. Unfortunately, the AC impedance performance of carbon fiber electrodes has been underappreciated up to date. In order to fully understand the influencing factors of AC impedance, the comprehensive and systematic

The present work proposed a novel method for preparing vanadium pentoxide (V2O5) by microwave drying followed by microwave calcination. The thermal degradation in the whole process was studied by using thermal analysis TG/DSC. The calcined products were characterized by X-ray diffraction, IR spectrum, Raman spectroscopy, X-ray fluorescence and scanning electron microscopy, respectively. The results

Ag nanoparticles were successfully deposited onto calcium niobate nanosheets using the electrostatic self-assembly method, followed by UV irradiation photoreduction. Various characterization techniques including XRD, SEM, HRTEM, BET and XPS have been utilized to study the material crystalline structure, microstructure, pore size and surface properties. Silver nanoparticles in the size range of 2–8 nm

Covalent organic frameworks (COFs) is made by covalent bonding of light elements, such as carbon, oxygen, nitrogen, boron and hydrogen, which can be flexibly synthesized as a porous material with low density, high permanent porosity and controllable sizes. This mini-review outlined the current understandings of mechanisms to yield a chemically stable COF and the use of these COFs to be adsorbents for

This first-attempt study provided asymptotic expansion solutions of singular perturbation to disclose unsolved kinetics of bisphenol A (BPA) degradation via advanced oxidation processes (AOPs). Although different rate laws (e.g., first order kinetics) were applied to kinetic modeling via initial rate determination in AOPs, transient dynamics of pollutant degradation were still remained open to be unexplored

Decontamination of toxic pollutants by porous nanomaterials with high removal efficiency has aroused immense concern in recent years. Herein, the newly designed magnetic porous organic polymers with abundant carboxyl groups (CMPOPs) were prepared via a facile in-situ surface polymerization strategy and their adsorption performance towards malachite green (MG) in aquaculture wastewater was investigated

Exploring bifunctional electrocatalysts with high activity for practical overall water splitting is urgent but challenging. Boosting low-cost catalysts with trace amount of noble metals supplies a promising scheme. Herein, Ru nanoparticles decorated Co(OH)2 nanosheet array on carbon cloth substrate (Ru-Co(OH)2/CC) is prepared via a two-step electrodeposition strategy. Trace Ru in the sample activates

Microbial fuel cells (MFCs) harvest electrons from microorganisms in the anode and perform reductive reactions, such as the reduction of oxygen into water, in the cathode. Efficient electron harvesting is important in constructing high-performance MFCs; however, current methods for evaluating Coulombic efficiency (CE) consume large amounts of time, samples, and labors. A rapid quantification method

Shewanella oneidensis MR-1 is a well-known electrogenic bacterium for its respiratory and extracellular electron transfer (EET) capability. However, the genetic toolkits, including promoters, replication origins and biological parts are still rarely used. In this study, constitutive promoters of pLacI, pJ23100, pJ23105, pJ23109, and pTet expressing super-folder green fluorescent protein (sfGFP) were

A new kind of hybrid nanocomposites (NC)s consisted of phenol-formaldehyde (PF), polydopamine (PDA) and modified halloysite nanotubes (HNT)s had been prepared by sonochemical synthesis. The surface modifications of HNTs were achieved by mussel inspired sonochemistry using dopamine (DA) as an active intermediate. In this process bio-safe DA could self-polymerized to adhere to the surface of HNTs and

The metal-organic framework UiO-66-NO2 was synthesized and was converted to amorphous mesoporous matrix by arsenate and phosphate modification. The 10 mM phosphate or arsenate solutions immersed for 120 min replaced 20% of zirconium cluster with partial deterioration of the crystalline structures at reduced surface areas and pore sizes which had lowered zeta potentials. The 50 mM arsenate or phosphate

In this paper the aldol condensation of furfural (C5) with acetone (C3) over Ca/ZSM-5 was studied with lower dosages of water and acetone as compared to previous studies. It was observed that the formation of CaO over the catalyst is critical to catalyst activity and that the reaction may not occur without water. Although higher quantity of water was favorable for the formation of 4-(2-Furyl)-3-buten-2-one

The nitrile groups in the tetrafluoroterephthalonitrile-crosslinked β-cyclodextrin (β-CD) were modified by (1) the reaction with the diethanolamine resulting in the hydroxyalkylaminoalkylamide groups or the hydroxyalkylaminoimide groups (2) the reduction of the borane-tetrahydrofuran complex resulting in the amide groups to form two novel β-CD based polymers (CDPs), namely the CDP-DEA and the CDP-NH2

As an efficient non-precious metal catalyst, FeCo alloy was widely used in various catalytic reactions. Owing to the organic pollution in ecosystem, it has attracted much attention in heterogeneous Fenton reaction. Unfortunately, their application was restricted by slow process and high leaching. To overcome these shortcomings simultaneously, herein, [email protected] graphitized carbon (NGC) core/shell

A binder-free electrode has been fabricated by directly growing MoSe2 nanosheets on the macroporous Ti mesh skeleton (MoSe2 NS-Ti) via a facile hydrothermal deposition method. The as-prepared MoSe2 NS-Ti electrode is characteristic of robust porous hierarchical nanostructures with large surface area, enriched exposed active edges and improved electroconductivity. As a result, in comparison to the bare

Surface tension (ST) relaxations are influential in industrial processes that are characterized by substantial surface deformations. Despite this, the dynamics of surfactant adsorption onto a dilating surface is still unclear. Recently, the ST relaxation of a non-ionic surfactant (TX-100) was reported (Lin et al. (2017) [17]), but little is known about the behavior of ionic surfactants. In this study

In an acetylene hydrogenation reactor, the slowly falling catalyst activity affects ethylene plant performance in an operating cycle. To maximize the integral economic benefit in a regeneration cycle or achieve the longest regeneration cycle, the full cycle operation optimisation must be a long time-scale dynamic optimisation for which the method of control vector parameterization is adopted. Because

The Z-scheme CeO2/BiOI (C/B) was prepared and evaluated for its photocatalytic RhB degradation and selective oxidation of benzylamine to N-benzylidenebenzylamine under visible light irradiation. Close contacts and chemical interactions between CeO2 and BiOI which are important for efficient charge transfer in the heterojunction were revealed by HRTEM and XPS studies. The C/B heterostructure presented

A novel porous coordination polymer (namely SnCe) has been synthesized by simultaneous coordination of Tin (Sn (IV)) and cerium (Ce (III/IV)) with the two ligands 5-sulfoisophthalic acid (SPA) and 1,3,5-benzenetricarboxylic acid (BTC). The morphology and surface area of SnCe can be controlled by the cerium-involved interfacial coordination, by taking advantage of the discrepancy of coordination ability

The treatment of hexavalent chromium (Cr(VI)) contaminated water is considered the highest priority in the environmental field. Cr(VI) is a known carcinogen and is toxic even at parts per billion levels. In recent years, zero-valent iron nanoparticles (nZVI) have been regarded the best candidate for the decontamination of heavy metals such as chromium (Cr) in contaminated groundwater. Surface modification

In a standard post-combustion carbon capture (PCC) process, the regeneration energy of CO2 lean solvent constitutes the majority of overall energy consumption. The energy reduction achieved by advanced stripper configurations, such as the cold-split bypass (CSB), interheated (IH) stripper, and lean vapor compression (LVC), have been reported in relevant literature. Energy-saving performance may be

This study aimed to evaluate the impacts of different polypropylene (PP) chain configurations, i.e., linear and branched form, on the rheological, mechanical, and electrical properties of PP-based, graphite nanoplates (GnP)-reinforced nanocomposites. The incorporation of GnP with different particle size gave us constructive information about the influences of filler's dimension on the abovementioned

In this work, for the first time, we prepared Pt loaded K+ doped graphitic carbon nitride (g-C3N4) catalyst for photocatalytic water splitting to produce H2 and H2O2 simultaneously without any sacrificial agent. Both products are high-value chemicals and in gas-liquid two phases, which avoid the trouble of separation. XRD, N2 adsorption, UV–Vis, SEM, TEM, PL, XPS and ESR were used to characterize the

This study is the first to use a newly-developed material via hydrothermal method, cerium oxide nanowires doped with reduced graphene oxide (CNW-RGO) for reductive H2 production. The detailed characteristics of the CNW-RGO materials were investigated to explore the capabilities of reductive production. The mean diameter of the CNWs was uniform at 22 nm. Owing to RGO-doping, the energy gap between the

Loose nanofiltration (NF) hollow fiber membranes with excellent dye rejection and high inorganic salt transmission are promising for textile wastewater treatment. Herein, a novel kind of reinforced PES loose NF hollow fiber membranes with robust twisted fiber bundle was fabricated by a facile dry-wet spinning process. The SEM results indicate that the favorable interfacial bonding layer was formed

In this study, Dardagan Fruit (DF) from Bingӧl - Turkey was tested as inhibitor corrosion for mild steel protection in 1 M HCl solution using electrochemical techniques. The surface of mild steel was examined by scanning electron microscopy (SEM) and atomic force microscopy (AFM). Elemental composition of the surface after exposing to test solutions was analyzed with the help of energy dispersive X-ray

Tartaric acid (TA) is an important component of plant rhizosphere secretion, having a certain influence on the adsorption and desorption behavior of heavy metals in soil. Humin could serve as an environmentally compatible passivator of heavy metal in soil. The aims of this study were to simulate the adsorption of Pb (II) via humin in a soil solution, explore the effects of TA on the adsorption of Pb

Removing submicron particles in the size range from 0.1 to 1.0 µm from gas streams is difficult because they cannot be efficiently captured neither through inertial separation nor by diffusion utilized in air pollution control devices. Electrostatic agglomeration is an effective and practical method for improving the removal efficiency of fine particulate matters. For optimizing the performance of

Fault isolation is an essential procedure in multivariate statistical process monitoring, which is used to locate the detected fault. Fault isolation identifies the crucial variables responsible for the detected fault. Accurate isolation results are useful for process engineers in diagnosing the root cause of the fault. Recent studies have revealed the equivalence between the fault isolation task and

Manganese oxides (MnOx) are one kind of the most used thermo-catalysts for catalytic oxidation of gaseous organic pollutants, but this process will cause excessive energy consumption. Herein, the photothermal effect of graphene oxide (GO) was utilized to convert the inexpensive solar energy to thermal energy, which subsequently drives the thermo-catalysis of MnOx for degrading gaseous formaldehyde

Catalyst activation is an important and influencing step while determining FTS activity. Taking into account the crucialness of how reduction atmosphere effects the FTS product selectivity, stability, catalytic activity, textural and morphological properties, MOFs mediated Fe-based catalyst ([email protected]) were reduced under five different reduction atmospheres i.e. R-1 (pure CO), R-2 (H2/CO = 1/4)

Self-standing photocatalytic materials based on transition-metal decorated electrospun fiber mat have attracted considerable attention for photodegradation of toxic refractory organic pollutants in the environment. In this study, poly(N-vinylpyrrolidone)/copper(II) nitrate fibers (Cu/PVP-F) were prepared by electrospinning of PVP/Cu(NO3)2 solution followed by crosslinking using microwave-induced argon

Novel binary coupled 2D/1D g-C3N4/CaTiO3 composite photocatalysts with face-to-face contact were synthesized by a solvothermal and calcination method. The properties of g-C3N4/CaTiO3 composites were characterized by XRD, SEM, TEM, BET, UV–vis/DRS, etc. The beneficial band position tuning via coupling g-C3N4 with CaTiO3, and its 2D/1D face-to-face contacted pattern transfer electrons rapidly and retard

Linear and nonlinear relationships may exist simultaneously across process variables and quality variables. If only the linear model is established, the nonlinear structure may be neglected. If only the nonlinear model is constructed, the model accuracy and monitoring performance may be degraded. Thus, the quality monitoring method considering both linear and nonlinear relationships needs to be presented

Smart surfaces with switchable wettability for both aqueous and non-aqueous drops have aroused much interest because of their potential applications. In this work, a facile approach for the creation of tunable surface wettability on hydroxyl surfaces with rapid switch at ambient temperature is developed. Both surface hydrophobicity and oleophobicity are enhanced after a fluoro-surfactant solution rinse

ZnFe2O4 nanorods (NR's) were prepared by a chemical conversion method from β-FeOOH NRs grown on FTO substrates. To activate their photoactivity of ZnFe2O4 NRs for solar water splitting, the surface passivation was achieved with SiO2 layer via facile and effective spray pyrolysis method. The presence of SiO2 layer enhances the photocurrent density of the Pristine ZnFe2O4 from 143 µA/cm2 to 212 µA/cm2

In this study, an attempt was made to investigate the mechanistic insight to identify the links between enzymatic and sonolysis processes through degradation mechanism. Experimental results revealed that ultrasound and cavitation increase the number of collision in enzymatic process through intense convection in the medium generated by transient cavitation, and enhances degradation efficiency by increasing

Simultaneous voltammetry determination of pentoxifylline (PTX) and paracetamol (PAR) were investigated by using graphene nanoflakes modified glassy carbon electrode (GrNF/GCE) in drug and biological samples. The synthesized flake was characterized using various analytical methods and the electron transfer behavior of GrNF was confirmed by CV and EIS techniques. Electrocatalytic oxidation of PTX and

CF4 plasma treatment on n+-Si wafers as bottom electrodes (BEs) of poly(vinylidene fluoride-co-trifluoroethylene) (P(VDF-TrFE)) metal-ferroelectric-metal (MFM) capacitors has been investigated in this study. Prior to the fabrication of MFM capacitors, comprehensive material analyses are administered to identify the incorporation of fluorine atoms into P(VDF-TrFE) copolymers, revealing an enrichment

ZnO layer was modified with the addition of Cationic dyes including Crystal Violet (CV)/Ethyl violet (EV) in sol–gel process for an electron transport layer in inverted polymer solar cells (PSCs). X-ray photoelectron spectra showed the presence of CV/EV at the top of ZnO surface. Besides, oxygen defect was significantly reduced by CV/EV modification due to the chloride occupation. Furthermore, the

New catalysts based on polymeric ionic liquids were synthesized and applied into selective oxidation of benzyl alcohol. Polymeric ionic liquid microspheres (PILM) were prepared by radical polymerization, and then the cations in the imidazole ring were exchanged with the metal anions. After that, the metal anions were reduced to Pd nanoparticles that was supported on the surface of PILM. This metal