Direct formation of amphiphilic crosslinked networks based on PVP as a marine anti-biofouling coating
Publication date: 15 October 2019Source: Chemical Engineering Journal, Volume 374Author(s): Hongshuang Guo, Jing Yang, Weiqiang Zhao, Tong Xu, Cunguo Lin, Jinwei Zhang, Lei ZhangAbstractIn this work, we developed a novel amphiphilic coating by incorporating poly (N-vinylpyrrolidone) (PVP), a highly hydrophilic polymer with strong physicochemically stability, into polydimethylsiloxane (PDMS) matrix. PVP was firstly functionalized with triethoxysilane and then directly crosslinked with PDMS to form an amphiphilic network coating at room temperature. Results suggested that the hydrophilicity of PDMS matrix was significantly i...
Source: Chemical Engineering Journal - June 20, 2019 Category: Chemistry Source Type: research

SiOC nanolayers directly-embedded in graphite as stable anode for high-rate lithium ion batteries
Publication date: 1 November 2019Source: Chemical Engineering Journal, Volume 375Author(s): Ze Wu, Xinqun Cheng, Dong Tian, Tiantian Gao, Weidong He, Chunhui YangAbstractSilicon oxycarbide (SiOC) has been an attractive anode material for lithium ion batteries (LIBs) owing to its high capacity and structure durability. However, due to its low electronic conductivity, SiOC usually owns poor rate performance and exhibits rapid capacity fading at high current density. For the first time, by combining commercialized graphite flakes with SiOC nanolayers, the pyrolysis product of thermoplastic polyphenylsesquisiloxane (PPSQ) sub-...
Source: Chemical Engineering Journal - June 20, 2019 Category: Chemistry Source Type: research

Fabrication of Fe3O4 and graphitized porous biochar composites for activating peroxymonosulfate to degrade p-hydroxybenzoic acid: Insights on the mechanism
Publication date: 1 November 2019Source: Chemical Engineering Journal, Volume 375Author(s): Haichao Fu, Peng Zhao, Shengjun Xu, Gong Cheng, Zhuoqian Li, Yi Li, Kai Li, Shuanglong MaAbstractThe novel Fe3O4 and porous biochar originated from Myriophyllum aquaticum composites (Fe3O4/MC) with graphitized structure, hierarchical porous and strong magnetism were used as efficient catalysts for degradation of organic pollutants in the presence of peroxymonosulfate (PMS). Three types of catalysts pyrolyzed at 600, 700, 800 °C manifested quit different PMS activation effect with the much better p-hydroxybenzoic acid (HBA) deg...
Source: Chemical Engineering Journal - June 20, 2019 Category: Chemistry Source Type: research

MOF-derived three-dimensional flower-like FeCu@C composite as an efficient Fenton-like catalyst for sulfamethazine degradation
Publication date: 1 November 2019Source: Chemical Engineering Journal, Volume 375Author(s): Juntao Tang, Jianlong WangAbstractIn this paper, a novel three-dimensional flower-like Fenton-like catalyst with iron-copper bimetallic NPs within the mesoporous carbon shell (FeCu@C) was successfully prepared through a simple pyrolysis of a [Fe,Cu]-BDC precursor and applied for catalytic degradation of sulfamethazine (SMT) in the presence of H2O2. The FeCu@C catalyst showed a 100% SMT removal within 90 min and a 72.3% total organic carbon (TOC) conversion within 240 min under the conditions of 20 mg L−1 SMT, 0.25 g ...
Source: Chemical Engineering Journal - June 20, 2019 Category: Chemistry Source Type: research

CO2/N2 injection into CH4 + C3H8 hydrates for gas recovery and CO2 sequestration
Publication date: 1 November 2019Source: Chemical Engineering Journal, Volume 375Author(s): Youhong Sun, Guobiao Zhang, Shengli Li, Shuhui JiangAbstractCO2 injection into CH4 hydrate (sI) is a promising method for simultaneous energy production and global warming mitigation. In fact, the natural abundance of sII hydrates have been also confirmed. The gas exchange kinetics in sII hydrates were significantly different from those in CH4 hydrate. In this work, the injection of CO2 with or without N2 into CH4-C3H8 hydrate-bearing sediments was experimentally investigated to explore gas recovery and CO2 sequestration during the ...
Source: Chemical Engineering Journal - June 20, 2019 Category: Chemistry Source Type: research

Trace pyrolyzed ZIF-67 loaded activated carbon pellets for enhanced adsorption and catalytic degradation of Rhodamine B in water
Publication date: 1 November 2019Source: Chemical Engineering Journal, Volume 375Author(s): Yanfang Li, Xinlong Yan, Xiaoyan Hu, Rui Feng, Min ZhouAbstractActivated carbon is one of the most commonly used adsorbent and catalyst carrier material. However, its performance for removal of organic compounds from water is relatively poor. In this work, trace amount of Zeolitic Imidazolate Framework-67 (ZIF-67) was loaded onto commercial activated carbon (AC) pellets and subsequently calcined at 800 °C for 6 h. The obtained material (cal-ZIF-67/AC) showed highly dispersed Co and N on its surface and its specific surface a...
Source: Chemical Engineering Journal - June 20, 2019 Category: Chemistry Source Type: research

Microfluidic preparation of thiol-containing monodisperse polymer microspheres and their adsorption of Pb2+ in water
Publication date: 1 November 2019Source: Chemical Engineering Journal, Volume 375Author(s): Lingxiao Li, Xueyan Liu, Jianhong Xu, Chengyou KanAbstractA novel polymerizable monomer containing carbon-carbon double bond and disulfide bond, 2-(((2-(pyridin-2-yldisulfanyl)ethoxy)carbonyl)amino) ethyl acrylate (PDSECAE), was first designed and synthesized, and then used to prepare thiol-containing monodisperse polymer microspheres with different sizes from 20 μm to 500 μm by means of microfluidic technique, UV-induced polymerization and dithiothreitol reduction in sequence. The chemical structures of PDSECAE and the mi...
Source: Chemical Engineering Journal - June 20, 2019 Category: Chemistry Source Type: research

High performance loose nanofiltration membranes obtained by a catechol-based route for efficient dye/salt separation
Publication date: 1 November 2019Source: Chemical Engineering Journal, Volume 375Author(s): Jing Wang, Rongrong He, Xinwei Han, Dechao Jiao, Junyong Zhu, Feili Lai, Xiangting Liu, Jindun Liu, Yatao Zhang, Bart Van der BruggenAbstractLoose nanofiltration membranes with excellent dye rejection and high inorganic salt transmission are promising for dye/salt separation. Herein, a mussel-inspired organic solvent-free method was chosen to prepare loose nanofiltration membranes with tunable surface structures and properties. A low-cost material, 1,2-dihydroxybenzene (catechol), was used to replace dopamine for the mussel-inspired...
Source: Chemical Engineering Journal - June 20, 2019 Category: Chemistry Source Type: research

E-carbon antenna-assembled TiO2 nanotubes for sensitization of photocatalytic reaction exemplified by enhanced oxidation of nitrobenzene
Publication date: 1 November 2019Source: Chemical Engineering Journal, Volume 375Author(s): Di Gu, Shixu Zhang, Tingting Jiang, Hong Jiang, Baohui Wang, Xirui WangAbstractIn this paper, E-carbon nanotubes were electrochemically assembled into binary TiO2 NTs. The assembled E-carbon nanotube, a nanoantenna for the sensitization of photocatalysis, enables trapping and transferring channels of mass and charge for uniformity and extension of the binary surface of the two-layer TiO2 NTs in the microstructure. Also, the E-carbon nanoantenna is electrojunctionally functionalized for an efficient charge separationone dominated by ...
Source: Chemical Engineering Journal - June 20, 2019 Category: Chemistry Source Type: research

Assessment of hydrodynamics in a novel bench-scale wall-cooled packed bioreactor under abiotic conditions
Publication date: 1 November 2019Source: Chemical Engineering Journal, Volume 375Author(s): Gerardo A. Gómez-Ramos, Carlos O. Castillo-Araiza, Sergio Huerta-Ochoa, Moises Couder-García, Arely Prado-BarragánAbstractAn adequate description of the velocity field is of utmost importance in the rational design of wall-cooled packed bioreactors applied to solid-state fermentation. This contribution assessed the hydrodynamics under abiotic conditions in a novel bench-scale wall-cooled tray bioreactor packed with moistened particles of agroindustrial waste. The work, in particular, aimed at determining hydrody...
Source: Chemical Engineering Journal - June 20, 2019 Category: Chemistry Source Type: research

Rational design and facile synthesis of two-dimensional hierarchical porous M3V2O8 (M = Co, Ni and Co–Ni) thin sheets assembled by ultrathin nanosheets as positive electrode materials for high-performance hybrid supercapacitors
Publication date: 1 November 2019Source: Chemical Engineering Journal, Volume 375Author(s): Biao Huang, Wensong Wang, Tao Pu, Jie Li, Chenglan Zhao, Li Xie, Lingyun ChenAbstractThe development of advanced supercapacitors (SCs) depends largely on the rational design and facile manufacture of high performance electrode materials. The family of cobalt/nickel-based vanadates M3V2O8 (M = Co, Ni and Co–Ni) including Co3V2O8 (CVO), Ni3V2O8 (NVO) and Co1.5Ni1.5V2O8 (CNVO) has emerged as promising electrode materials for SCs, yet still limited by its unsatisfactory electrochemical performance. Herein, novel two-dimensiona...
Source: Chemical Engineering Journal - June 20, 2019 Category: Chemistry Source Type: research

Carbon coated transition metal borates as anode materials for Na-ion batteries
This study demonstrates a class of new promising conversion-type anodes and also verifies the practical application in Na-ion batteries with high energy/power density. (Source: Chemical Engineering Journal)
Source: Chemical Engineering Journal - June 20, 2019 Category: Chemistry Source Type: research

An intramolecular hybrid of metal polyhedral oligomeric silsesquioxanes with special titanium-embedded cage structure and flame retardant functionality
Publication date: 15 October 2019Source: Chemical Engineering Journal, Volume 374Author(s): Haiyang Wu, Birong Zeng, Jinmei Chen, Tong Wu, Yuntong Li, Yongzhou Liu, Lizong DaiAbstractA novel metal–organic-inorganic ternary intramolecular hybrid of N,N′-bis(methylene)-bis(dibenz[C,E][1,2]oxaphosphorin6-oxide)-propylisobutyl-amino-titanium-polyhedral oligomeric silsesquioxanes (Ti-POSS-bisDOPO) was synthesized via a feasible route including the corner-opening, corner-capping and Kabachnik-Fields reactions. The uniqueness of this compound lies in its structural design and has the function of flame retardant. First...
Source: Chemical Engineering Journal - June 19, 2019 Category: Chemistry Source Type: research

Anti-corrosion enhancement of superhydrophobic coating utilizing oxygen vacancy modified potassium titanate whisker
In this study, a novel polyethersulfone (PES) superhydrophobic coating with long-term anti-corrosion ability for carbon steel was developed by utilizing reduced potassium titanate whisker (RPTW), nano-SiO2 and 1H,1H,2H,2H-perfluorooctyltriethoxysilane (POTS). Oxygen vacancies were generated on the RPTW owing to the reducing reaction at a low temperature. Then, for the first time, the RPTW was used to passivate the carbon steel substrate in coating by generating and transferring atomic oxygen through oxygen vacancies, providing an additional protection layer to shield the metal substrate against the corrosion medium. Moreov...
Source: Chemical Engineering Journal - June 19, 2019 Category: Chemistry Source Type: research

Poly(ionic liquid)-polyethylene oxide semi-interpenetrating polymer network solid electrolyte for safe lithium metal batteries
Publication date: 1 November 2019Source: Chemical Engineering Journal, Volume 375Author(s): Yuhan Li, Zongjie Sun, Lei Shi, Shiyao Lu, Zehui Sun, Yuchuan Shi, Hu Wu, Yanfeng Zhang, Shujiang DingAbstractSolid-state polymer electrolyte with high ionic conductivity and electrochemical stability is desirable for lithium metal batteries. A poly(ionic liquid)-polyethylene oxide semi-interpenetrating polymer network composite solid electrolyte for safe lithium metal batteries is designed to satisfy the demand of ionic conductivity, safety and electrochemical stability. This composite solid electrolyte is fabricated via polymerizi...
Source: Chemical Engineering Journal - June 19, 2019 Category: Chemistry Source Type: research

Ozone activated Ag/CeO2 catalysts for soot combustion: The surface and structural influences
Publication date: 1 November 2019Source: Chemical Engineering Journal, Volume 375Author(s): Meisheng Zhang, Baofang Jin, Yan Liu, Wei Liu, Duan Weng, Xiaodong Wu, Shuang LiuAbstractIn this work, O3 activation was performed at 200 °C over two types of Ag/CeO2 catalysts with nanocube- and nanorod-like morphologies, respectively. The O3-indcued surface Ox− species (“Ox− injection”) accelerated soot combustion over both catalysts temporarily. In contrast, the depletion of CeO2 surface oxygen vacancies (Ce3+-VO-s) caused by ozonization conferred to long-term activation. Specifically, the ozonized n...
Source: Chemical Engineering Journal - June 19, 2019 Category: Chemistry Source Type: research

Ni-MOF coating MoS2 structures by hydrothermal intercalation as high-performance electrodes for asymmetric supercapacitors
Publication date: 1 November 2019Source: Chemical Engineering Journal, Volume 375Author(s): Liguo Yue, Xiao Wang, Taotao Sun, Hui Liu, Qi Li, Ning Wu, Hao Guo, Wu YangAbstractTwo-dimensional metal-organic frameworks and nanoflowers of the MoS2 form a composite structure as an electrode material for high-performance supercapacitor application. MoS2 expands in the accordion-type Ni-MOF layers, and -S- joins the two materials to form a Ni-MOF coating MoS2 composite structure. The composite material MoS2@Ni-MOF combines the structural characteristics of the Ni-MOF and MoS2, and effectively improves the electrochemical performa...
Source: Chemical Engineering Journal - June 19, 2019 Category: Chemistry Source Type: research

Ordered porous BiVO4 based gas sensors with high selectivity and fast-response towards H2S
Publication date: 1 November 2019Source: Chemical Engineering Journal, Volume 375Author(s): Can Li, Xiaokang Qiao, Jie Jian, Fan Feng, Hongqiang Wang, Lichao JiaAbstractSeeking for novel materials that show pronounced gas sensing performance has been of great interests from both academic and technological perspectives. Herein, we report for the first time the gas sensing properties of monoclinic phase BiVO4 porous films with high selectivity and low detection limit towards H2S. The porous film with honeycomb-like morphology was in situ synthesized based on the solution dipping strategy using monolayer colloidal crystal as ...
Source: Chemical Engineering Journal - June 19, 2019 Category: Chemistry Source Type: research

Monitoring and removal of trace heavy metal ions via fluorescence resonance energy transfer mechanism: In case of silver ions
Publication date: 1 November 2019Source: Chemical Engineering Journal, Volume 375Author(s): Zhao-You Chu, Wan-Ni Wang, Chen-Yang Zhang, Juan Ruan, Ben-Jin Chen, Hong-Mei Xu, Hai-Sheng QianAbstractThe heavy metal ions pollution has attracted tremendous attention owing to their cumulative effect in organs. In this work, ZnS coated upconversion nanoparticles (denoted as UCNPs@ZnS) has been fabricated and firstly used as dual-functional fluorescence probe for simultaneously removal of heavy metals such as Ag+, Cu2+ or Hg2+ and detection of these ions residual in aqueous solution.. The upconversion fluorescence intensity of the...
Source: Chemical Engineering Journal - June 19, 2019 Category: Chemistry Source Type: research

Comparison of diatrizoate degradation by UV/chlorine and UV/chloramine processes: Kinetic mechanisms and iodinated disinfection byproducts formation
This study compared the degradation efficiency of diatrizoate (DTA) by UV/chlorine and UV/chloramine processes. DTA could be effectively degraded by the UV/chlorine and UV/chloramine processes compared with chlorination and chloramination solely. Although the UV/chlorine process was more sensitive to the variations of oxidant dosages, solution pH, the concentration of bicarbonate and chloride, UV/chlorine degraded DTA more efficiently than UV/chloramine process. The reactive chlorine species (RCS) and hydroxyl radical (HO) are predominant contributors to DTA degradation in the UV/chlorine and UV/chloramine processes respec...
Source: Chemical Engineering Journal - June 19, 2019 Category: Chemistry Source Type: research

Efficient peroxodisulfate activation by iodine vacancy rich bismuth oxyiodide: A vacancy induced mechanism
This study provides a new iodine vacancy engineered strategy for PDS activation and non-radical oxidation, and brings insights for defects induced active sites both in materials and vacancy types.Graphical abstract (Source: Chemical Engineering Journal)
Source: Chemical Engineering Journal - June 19, 2019 Category: Chemistry Source Type: research

Explaining non-monotonic retention profiles during flow of size-distributed colloids
Publication date: 1 November 2019Source: Chemical Engineering Journal, Volume 375Author(s): Gabriel Malgaresi, Ben Collins, Paul Alvaro, Pavel BedrikovetskyAbstractNon-monotonic retention profiles (NRP) have been observed in numerous studies of colloidal-nano flows in porous media. For the first time, we explain the phenomenon by distributed particle properties (size, shape, surface charge). We discuss colloidal-nano transport with fines attachment considering stochastically distributed filtration coefficient (particle attachment probability) and the area occupied by particle on the rock surface. The distributed dynamic sy...
Source: Chemical Engineering Journal - June 19, 2019 Category: Chemistry Source Type: research

Performance evaluation of isolated electrogenic microalga coupled with graphene oxide for decolorization of textile dye wastewater and subsequent lipid production
In this study, electrogenic microalga Desmodesmus sp. was isolated from discharge site of textile dyeing mill effluent and was explored for its potential for dye degradation and lipid production. Extracellular electron transfer (EET) by microbes displays their capability to associate with its surrounding environment. To attain an efficient alternative, a nanobiotechnological approach was applied, wherein; extracellular electrons of Desmodesmus sp. was coupled with graphene oxide (GO) nanosheets on its electron-rich draper region to form a GO/algae bionanocomposite. Electrochemical tests of the bionanocomposite revealed tha...
Source: Chemical Engineering Journal - June 19, 2019 Category: Chemistry Source Type: research

Facile construction of three-dimensional netted ZnIn2S4 by cellulose nanofibrils for efficiently photocatalytic reduction of Cr(VI)
This study could enlighten people for developing high-efficiency photocatalysts via morphologies design guided by bond connection.Graphical abstract (Source: Chemical Engineering Journal)
Source: Chemical Engineering Journal - June 19, 2019 Category: Chemistry Source Type: research

The photodegradation of 1,3,6,8-tetrabromocarbazole in n-hexane and in solid-mediated aqueous system: Kinetics and transformation mechanisms
Publication date: 1 November 2019Source: Chemical Engineering Journal, Volume 375Author(s): Xiaoxue Pan, Chenguang Li, Jing Chen, Jiaoqin Liu, Jiali Ge, Jiayi Yao, Siyuan Wang, Zunyao Wang, Ruijuan Qu, An LiAbstractThe kinetics and mechanisms of photochemical transformation of 1,3,6,8-tetrabromocarbazole (1368-BCZ) in n-hexane and pre-coated on solid particles in aqueous solution are investigated. Under simulated sunlight irradiation, 1368-BCZ dissolved in n-hexane rapidly photodegraded, obeying the pseudo first-order kinetics model. In the aqueous system, particles of seven different solids with coated 1368-BCZ were suspe...
Source: Chemical Engineering Journal - June 19, 2019 Category: Chemistry Source Type: research

Control of MoOx nanostructures by flame vapor deposition process
Publication date: 1 November 2019Source: Chemical Engineering Journal, Volume 375Author(s): Jin-Rui Ding, Kyo-Seon KimAbstractNanostructured MoOx thin films have recently drawn great attentions due to their unique electrochemical properties for various applications, especially for lithium ion battery and solar rechargeable sodium-ion intercalation battery. The growth of MoOx nanostructures was achieved by using Mo wire feeder incorporated flame vapor deposition (FVD) system. Nanotubes and nanowires were successfully obtained in this FVD process under certain process conditions. Mo wire feed rate was found to have great imp...
Source: Chemical Engineering Journal - June 19, 2019 Category: Chemistry Source Type: research

Identification and optimization of thermally safe operating conditions for single kinetically controlled reactions with arbitrary orders in isoperibolic liquid-liquid semibatch reactors
Publication date: 1 November 2019Source: Chemical Engineering Journal, Volume 375Author(s): Bo Zhang, Huirang Hou, Lin Hao, Jiaxing Zhu, Yaozhou Sun, Hongyuan WeiAbstractTo obtain thermally safe operating conditions for kinetically controlled liquid-liquid reactions occurring in isoperibolic semibatch reactors (SBRs), an extreme scenario in which the product (UA) of the overall heat transfer coefficient (U) and the area (A) is equal to its initial value, (UA)0, was studied and combined with the ideal scenario where the UA is proportional to the liquid volume. Under both scenarios, the jacket temperature evolution of the ma...
Source: Chemical Engineering Journal - June 19, 2019 Category: Chemistry Source Type: research

Bimetallic catalysts for CO2 capture and hydrogenation at simulated flue gas conditions
In this study we attempt to replace some of the Ru in the DFM with less expensive Ni and demonstrate the advantages and disadvantages of this replacement. The main advantage of the presence of Ni is an increase in CO2 adsorption and increase in methane produced, however, at the expense of a lower methanation rate. Extended cyclic aging studies corroborate the stable performance of 1% Ru, 10% Ni, 6.1% “Na2O”/Al2O3.Graphical abstract (Source: Chemical Engineering Journal)
Source: Chemical Engineering Journal - June 19, 2019 Category: Chemistry Source Type: research

Boosting phototherapeutic efficiency with single NIR laser-activated ultrasmall bismuth sulfide quantum dots
Publication date: 1 November 2019Source: Chemical Engineering Journal, Volume 375Author(s): Huayan Yang, Yanmin Zhang, Jian Song, Meng Wang, Shaoning Yu, Liang Chen, Xiaomin Li, Shouning Yang, Lin YangAbstractThe integration of photothermal therapy (PTT) with photodynamic therapy (PDT) has great potential to revolutionize conventional therapeutic approaches for cancers. However, most of the currently developed nanoplatforms for combinatorial phototherapy require the participation of different components or activation of separate lasers. Therefore, a desirable photoactive agent with intrinsic single laser-activated combinat...
Source: Chemical Engineering Journal - June 19, 2019 Category: Chemistry Source Type: research

Construction of nano-composites by enzyme entrapped in mesoporous dendritic silica particles for efficient biocatalytic degradation of antibiotics in wastewater
Publication date: 1 November 2019Source: Chemical Engineering Journal, Volume 375Author(s): Yichao Song, Yu Ding, Fei Wang, Yu Chen, Yucheng JiangAbstractDendritic silica particles (DSP) with center-radial vertical pore were prepared for entrapping chloroperoxidase (CPO) to construct CPO@DSP. This enzymatic composite is very stable in the presence of heat and organic solvents, remaining 90.74% activity at 80 °C after 3 h while the free CPO can keep only 14.28% activity at the same condition. Moreover, it was found the pore size of DSP can influence the catalytic activity of the composite. The pore should keep the a...
Source: Chemical Engineering Journal - June 19, 2019 Category: Chemistry Source Type: research

Thermo and light-responsive phase change nanofibers with high energy storage efficiency for energy storage and thermally regulated on–off drug release devices
Publication date: 1 November 2019Source: Chemical Engineering Journal, Volume 375Author(s): Somia Yassin Hussain Abdalkarim, Houyong Yu, Chuang Wang, Yuxiang Chen, Zhuanyong Zou, Lian Han, Juming Yao, Kam Chiu TamAbstractThermo/light-responsive functionalized cellulose nanocrystal-zinc oxide (f-CNC-ZnO) nanohybrids based poly (3-hydroxybutyrate-co-3-hydroxy valerate) (PHBV) phase change nanofiber (PCF) composites with highly thermal energy storage ability were developed for controllable drug release applications. Under sunlight irradiation, the PCF composite (without f-CNC-ZnO) absorbed light and stored the thermal energy ...
Source: Chemical Engineering Journal - June 19, 2019 Category: Chemistry Source Type: research

Ligands induced NiS2 quantum dots for synchronous high specific capacity and robust stability of advanced electrochemical energy storage
Publication date: 1 November 2019Source: Chemical Engineering Journal, Volume 375Author(s): Wenyong Chen, Xuemei Zhang, Li-E Mo, Zhenzhen Feng, Shuanghong Chen, Xianxi Zhang, Yongsheng Zhang, Linhua HuAbstractThe structural collapse of transition metal sulfides in repeated charge and discharge process restricts their cyclic performance. How to effectively remedy stability without sacrifice of capacity still remains a daunting challenge. Herein, ultra-small NiS2 quantum dots (QDs) are assembled with pyridine ligands containing heterocyclic nitrogen atoms of high electronegativity. The induction of electron cloud of heterocy...
Source: Chemical Engineering Journal - June 19, 2019 Category: Chemistry Source Type: research

Tuning electronic and composition effects in ruthenium-copper alloy nanoparticles anchored on carbon nanofibers for rechargeable Li-CO2 batteries
Publication date: 1 November 2019Source: Chemical Engineering Journal, Volume 375Author(s): Yachao Jin, Fuyi Chen, Jiali Wang, Roy L. JohnstonAbstractRechargeable Li-CO2 batteries are attracting increasing attention due to their high energy density and ability to capture greenhouse gas CO2. However, the difficulty in decomposing electronically insulating and electrochemically sluggish Li2CO3 discharge products under low charge voltages is still a major challenge. Herein, for the first time, a composite of intermixed ruthenium-copper alloy nanoparticles uniformly anchored on carbon nanofibers (i-RuCu/CNFs) as efficient cath...
Source: Chemical Engineering Journal - June 19, 2019 Category: Chemistry Source Type: research

A novel phosphorus/nitrogen-containing polycarboxylic acid endowing epoxy resin with excellent flame retardance and mechanical properties
Publication date: 1 November 2019Source: Chemical Engineering Journal, Volume 375Author(s): Huajun Duan, Yongsheng Chen, Sa Ji, Rui Hu, Huiru MaAbstractTo meet the requirements of application of epoxy resin (EP) in some special fields, the flame retardance must be improved without losing its mechanical properties. To achieve this purpose, a novel phosphorus/nitrogen-containing polycarboxylic acid (TMD) was synthesized successfully via a facile monoesterification and addition reaction between 1,3,5-tris(2-hydroxyethyl)isocyanurate (THEIC), maleic anhydride (MAH) and 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (DOPO),...
Source: Chemical Engineering Journal - June 19, 2019 Category: Chemistry Source Type: research

Steam separation enhanced reactions: Review and outlook
Publication date: 15 October 2019Source: Chemical Engineering Journal, Volume 374Author(s): Jasper van Kampen, Jurriaan Boon, Frans van Berkel, Jaap Vente, Martin van Sint AnnalandAbstractEnhancement by steam separation is a promising process intensification for many types of reactions in which water is formed as a byproduct. For this, two main technologies are reactive vapor permeation (membrane technology) and reactive adsorption. Both can achieve significant conversion enhancement of equilibrium limited reactions by in situ removal of the by-product steam, while additionally it may help protecting catalysts from steam-i...
Source: Chemical Engineering Journal - June 18, 2019 Category: Chemistry Source Type: research

Ultra-thin, highly graphitized carbon nanosheets into three-dimensional interconnected framework utilizing a ball mill mixing of precursors
Publication date: 15 October 2019Source: Chemical Engineering Journal, Volume 374Author(s): Jie Wang, Jeonghun Kim, Bing Ding, Jung Ho Kim, Victor Malgras, Christine Young, Yusuke YamauchiAbstractConstructing two-dimensional (2D) carbon nanosheets into a three-dimensional (3D) framework can prevent restacking and increase the accessible surface area, which is promising to broaden the range of applications of 2D carbon materials. Here we report a facile preparation of an ultrathin, highly graphitized carbon nanosheets framework (UGCF) by directly carbonizing a gel composite of resol, FeCl3·6H2O, and F127 block polyme...
Source: Chemical Engineering Journal - June 18, 2019 Category: Chemistry Source Type: research

Novel solvent-triggered transformation of Cu-based metal-organic gels to highly monodisperse metal-organic frameworks with controllable shapes
Publication date: 15 October 2019Source: Chemical Engineering Journal, Volume 374Author(s): Li He, Wei Li, Zhong Wei Jiang, Ting Ting Zhao, Yang Li, Chun Mei Li, Cheng Zhi Huang, Yuan Fang LiAbstractThe transformation of amorphous phase metal-organic gels (MOGs) into crystal metal-organic frameworks (MOFs) is an expectant and effective strategy for crystal growth. Herein, a novel solvent-triggered method on transforming amorphous copper-based metal-organic gels (Cu-MOGs) into highly monodisperse MOFs crystals with controlled shapes, namely, dodecahedron, hollow dodecahedron, polyhedron, cube, cruciate flower and cross star...
Source: Chemical Engineering Journal - June 18, 2019 Category: Chemistry Source Type: research

Facile photoelectrochemical water oxidation on Co2+-adsorbed BiVO4 thin films synthesized from aqueous solutions
In this study, the organic solvent free ‘green synthesis’ of bismuth vanadate (BiVO4) has been described for its application in photoelectrochemical (PEC) water oxidation. BiVO4 thin films were successfully prepared through electrodeposition of Bi film on the FTO glass substrate from the aqueous bath containing Bi(NO3)3 in presence of K-Na-tartrate and dextrose; followed by thermo-chemical reaction with an aqueous solution of vanadium acetylacetonate (VO(acac)2). XRD & SEM-EDS analyses indicated the formation of scheelite monoclinic BiVO4 with seed-like morphology. UV–visible absorption spectra measur...
Source: Chemical Engineering Journal - June 18, 2019 Category: Chemistry Source Type: research

Single near-infrared-laser driven Z-scheme photocatalytic H2 evolution on upconversion material@Ag3PO4@black phosphorus
Publication date: 1 November 2019Source: Chemical Engineering Journal, Volume 375Author(s): Yuanyuan Zhang, Lili Wang, Sung Heum Park, Xiaoying Kong, Xuefang Lan, Zhaoyang Song, Jinsheng ShiAbstractZ-scheme composite is considered as a desirable photocatalyst because of its efficient separation of electron-hole pairs and enhanced redox ability. However, single near-infrared light activated Z-scheme photocatalysts have been rarely reported. In this paper, for the first time, black phosphorus (BP) decorated three-dimensional β-NaYF4:Yb3+, Tm3+@Ag3PO4 (NYF@Ag3PO4@BP) micro-rods are successfully synthesized. Under 980 n...
Source: Chemical Engineering Journal - June 18, 2019 Category: Chemistry Source Type: research

Phytic acid-encapsulated MIL-101(Cr): Remarkable adsorbent for the removal of both neutral indole and basic quinoline from model liquid fuel
Publication date: 1 November 2019Source: Chemical Engineering Journal, Volume 375Author(s): Nazmul Abedin Khan, Sung Hwa JhungAbstractPhytic acid (PA) encapsulated metal-organic framework (MIL-101(Cr) or Cr-benzenedicarboxylate) was prepared for the first time; and applied in the adsorptive removal of nitrogen-containing compounds (NCCs) from liquid model fuel. The modified MIL-101(Cr)s resulted in very promising maximum adsorption capacities (Q0) for both the neutral indole (IND, Q0 = 543 mg/g) and basic quinoline (QUI, Q0 = 549 mg/g) compared to the pristine MIL-101(Cr) (IND; Q0 = 416 mg/g; QUI, Q0 =...
Source: Chemical Engineering Journal - June 18, 2019 Category: Chemistry Source Type: research

Facile, template-free synthesis of macroporous SiO2 as catalyst support towards highly enhanced catalytic performance for soot combustion
Publication date: 1 November 2019Source: Chemical Engineering Journal, Volume 375Author(s): Hui Wang, Zewen Chen, Dandan Chen, Qinqin Yu, Wei Yang, Jie Zhou, Shengji WuAbstractIn the present work, we report a simple, economic and template-free strategy to synthesize macroporous SiO2 as catalyst support for soot combustion. The textural structure of SiO2 could be manipulated effectively to facilitate soot combustion through controlling the agglomeration and growth of colloidal silica particles in the sol-to-gel process. The Brownian motion, the inter-particle distance and the electric double layer of colloidal silica partic...
Source: Chemical Engineering Journal - June 18, 2019 Category: Chemistry Source Type: research

Colored TiO2 composites embedded on fabrics as photocatalysts: Decontamination of formaldehyde and deactivation of bacteria in water and air
This study suggests that the developed colored photocatalysts can be applied in textiles to clean water and air.Graphical abstract (Source: Chemical Engineering Journal)
Source: Chemical Engineering Journal - June 18, 2019 Category: Chemistry Source Type: research

Nitrate removal and recovery by capacitive deionization (CDI)
Publication date: 1 November 2019Source: Chemical Engineering Journal, Volume 375Author(s): Olga Pastushok, Feiping Zhao, Deepika L. Ramasamy, Mika SillanpääAbstractCapacitive deionization (CDI), an emerging technology, has attracted attention recently and has been applied for various purposes. Herein, we investigated the application of a CDI system using activated carbon (AC) electrodes for nitrate removal and recovery in the scope of domestic wastewater treatment. The electrochemical behavior and structural parameters of AC electrodes were investigated as a part of this work. CDI electrodes were fabricated from...
Source: Chemical Engineering Journal - June 18, 2019 Category: Chemistry Source Type: research

Fe3O4@MoS2@PEI-facilitated enzyme tethering for efficient removal of persistent organic pollutants in water
Publication date: 1 November 2019Source: Chemical Engineering Journal, Volume 375Author(s): Fanpeng Ran, Yulin Zou, Yixuan Xu, Xiaoyan Liu, Haixia ZhangAbstractA kind of core-shell material with regular shape and size, and uniform composition, is prepared in aqueous phase and used for laccase immobilization. Magnetic Fe3O4 nanoparticle is coated with MoS2 by self-assembly, and the Fe3O4@MoS2 is further coated by polyethyleneimine, which acts as a spacer arm and is beneficial to enzyme immobilization. The nanocarrier affords the high loading capability of 120 mg/g and satisfied activity recovery of 90% for laccase. The im...
Source: Chemical Engineering Journal - June 18, 2019 Category: Chemistry Source Type: research

Stepwise adsorption-oxidation removal of oxytetracycline by Zn0-CNTs-Fe3O4 from aqueous solution
Publication date: 1 November 2019Source: Chemical Engineering Journal, Volume 375Author(s): Yunbo Liu, Ni Tan, Bingqing Wang, Yong LiuAbstractA novel strategy to remove oxytetracycline (OTC) from aqueous solution was proposed by two-step process of adsorption followed by oxidation degradation: OTC was firstly concentrated on the surface of the Zn0-CNTs-Fe3O4 composite by adsorption process under neutral condition. Then, the concentrated OTC on the surface of Zn0-CNTs-Fe3O4 was oxidized by Zn0-CNTs-Fe3O4/O2 Fenton-like process at pH of 3 with high solid-water ratio, which can reduce the amount of acid used for adjusting pH ...
Source: Chemical Engineering Journal - June 18, 2019 Category: Chemistry Source Type: research

High dispersion of polyethyleneimine within mesoporous UiO-66s through pore size engineering for selective CO2 capture
Publication date: 1 November 2019Source: Chemical Engineering Journal, Volume 375Author(s): Zhong Li, Hongfeng Chen, Chong Chen, Qirui Guo, Xue Li, Yuting He, Huijuan Wang, Nengjie Feng, Hui Wan, Guofeng GuanAbstractAs a result of the low partial pressure of CO2 in most industrial waste gases, capturing CO2 especially at low pressure was a priority. A facile method was utilized to build mesoporous UiO-66s with adjustable pore sizes via crystal defect engineering. The mesopores were generated through the removal of instable Cu clusters and lauric acid after reaction. The pore sizes could be controlled via adjusting the mola...
Source: Chemical Engineering Journal - June 18, 2019 Category: Chemistry Source Type: research

Insights into interactions between vanadium (V) bio-reduction and pentachlorophenol dechlorination in synthetic groundwater
Publication date: 1 November 2019Source: Chemical Engineering Journal, Volume 375Author(s): Baogang Zhang, Yutong Cheng, Jiaxin Shi, Xuan Xing, Yuling Zhu, Nan Xu, Jianxin Xia, Alistair G.L. BorthwickAbstractAquifer co-contamination by vanadium (V) and pentachlorophenol (PCP) involves complicated biogeochemical processes that remain poorly understood, particularly from the perspective of microbial metabolism. Batch experiment results demonstrated that V(V) and PCP could be competitively bio-reduced, with 96.0 ± 1.8% of V(V) and 43.4 ± 4.6% of PCP removed during 7 d operation. V(V) was bio-transformed ...
Source: Chemical Engineering Journal - June 18, 2019 Category: Chemistry Source Type: research

Sorption mechanism and dynamic behavior of graphene oxide as an effective adsorbent for the removal of chlorophenol based environmental-hormones: A DFT and MD simulation study
Publication date: 1 November 2019Source: Chemical Engineering Journal, Volume 375Author(s): Dongli Wei, Chaofeng Zhao, Ayub Khan, Lu Sun, Yongfei Ji, Yuejie Ai, Xiangke WangAbstractChlorophenols are a group of environmental-hormones (EHs) which are carcinogenic, toxic and often precursors to dioxins. Increasing interest in their removal from environment has emerged as a research hotspot in recently years. The adsorption mechanism and dynamic behaviors of four molecules, namely Phenol, 4-chlorophenol (CP), 2,4-dichlorophenol (DCP), and 2,4,6-trichlorophenol (TCP) onto graphene oxide were investigated by means of plane-wave ...
Source: Chemical Engineering Journal - June 18, 2019 Category: Chemistry Source Type: research

Thermodynamic, structural, and kinetic studies of cyclopentane + CO2 hydrates: Applications for desalination and CO2 capture
This study examines the thermodynamic, structural, and kinetic characterizations of cyclopentane (CP) + CO2 hydrates in the presence of NaCl for their potential applications in desalination and CO2 capture. Powder X-ray diffraction (PXRD) demonstrated that CP molecules fully occupied the large (51264) cages of CP + CO2 hydrate (structure II), whereas approximately 62% of the small (5 1 2) cages were captured by CO2 molecules. To determine accurate hydration numbers and dissociation enthalpies of CP and CP + CO2 hydrates, cage occupancy of guest molecules revealed by Rietveld refinement of PXRD patterns was ...
Source: Chemical Engineering Journal - June 18, 2019 Category: Chemistry Source Type: research

Reduction of lumped reaction networks based on global sensitivity analysis
Publication date: 1 November 2019Source: Chemical Engineering Journal, Volume 375Author(s): Zoltán Till, Tamás Varga, János Sója, Norbert Miskolczi, Tibor ChovánAbstractIn case of complex chemical systems in that many reactions occur between high numbers of species, it is often necessary to use some form of lumping in order to obtain a simpler kinetic model whose parameters can actually be determined from the available data. Designing a lumped reaction network, however, involves dealing with great degrees of freedom. One has to define the actual pseudocomponents, the reactions that take p...
Source: Chemical Engineering Journal - June 18, 2019 Category: Chemistry Source Type: research