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Challenges in membrane-based liquid phase separations

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Green Chemical Engineering 2021年第1期2卷 3-13页

作者： Ze-Xian Low huanting wang Department of Chemical Engineering Monash UniversityClaytonVictoria3800Australia

Membranes are widely used in separation processes due to their low energy requirement,small footprint and *** membranes have been developed based on novel materials and fabrication techniques to address separation challenges in the field of membrane *** the case of liquid phase separations,ion-ion separation and chiral resolution using membranes have attracted growing interest for their applications such as in high-value mineral extraction and pharmaceutical ***,reverse osmosis operation favors ultra-high-pressure range for treating feed with higher salinity with higher water *** we highlight the latest development and design approaches of single species-selective membranes and pressure-resistant membranes and discuss the current limitations of membrane separation in the liquid *** subsequently review recent advancement in the fabrication techniques that enable the making of these membranes from emerging materials.

关键词： materials. separation phase.

Hydrothermal synthesis of AlPO4-5:Effect of precursor gel preparation on the morphology of crystals

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Progress in Natural Science:Materials International 2012年第6期22卷 684-692页

作者： Dan Li Jianfeng Yao huanting wang Department of Chemical Engineering Monash UniversityClaytonVic 3800Australia Environmental Engineering School of Engineering and Information TechnologyMurdoch UniversityMurdochWA 6150Australia

This paper reports on the effect of precursor gel preparation on the microstructural formation of aluminophosphate-5(AlPO4-5) molecular sieves in the hydrothermal *** morphology of AlPO4-5 crystal changed from sphere to ellipse with two symmetrical craters when the aluminophosphate precursor gel was prepared via dropwise addition of acid and TEA under strong stirring,and continuous stirring overnight during the gel aging *** results also showed that both of well-crystallized spherical and elliptical AlPO4-5 crystals covered by the fibrous crystals could be hydrothermaily synthesized at 150℃for 4 h or *** average particle size of spherical AlPO4-5 samples was about 35-45μm in diameter,whereas the elliptical AlPO4-5 exhibited approximately 13μm in width and 15μm in length.

关键词： Aluminophosphate AlPO4-5 Stirring Elliptical structure Crater structure

Advanced membranes and membrane processes toward green chemical engineering

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Green Chemical Engineering 2021年第1期2卷 1-2页

作者： Zhongyi Jiang huanting wang School of Chemical Engineering at Tianjin University China Director of the Monash Centre for Membrane Innovation at Monash University Australia

Membrane technologies are broadly used in many industrial separation processes owing to their distinct advantages in low energy consumption,high separation efficiency and low environmental *** membrane science has become one of the core drivers for green chemical *** the membrane field,tremendous research efforts are being devoted to develop novel membranes and advance fundamental membrane science for improving existing membrane separations and addressing pendent separation challenges for a greener future.

关键词： separation chemical pendent

Amino-functionalized porous PDVB with high adsorption and regeneration performance for fluoride removal from water

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Green Chemical Engineering 2021年第2期2卷 224-232页

作者： Yuanyuan Huang Xianbiao wang Yongfei Xu Shaojie Feng Jin Liu huanting wang Anhui Province International Research Center on Advanced Building Materials School of Materials Science and Chemical EngineeringAnhui Jianzhu UniversityHefei230601China Institute of Solid State Physics Chinese Academy of SciencesHefei230031China Anhui Institute of Building Science Research and Design Hefei230001China Department of Chemical Engineering Monash UniversityClaytonVictoria3800Australia

Excessive fluoride anions in drinking water are toxic to the health of human *** this article,an effective fluoride removal adsorbent on the basis of amino-functionalized porous polydivinylbenzene(PDVB)was prepared through low cost processes,which included solvothermal preparation of porous PDVB and subsequent surface *** obtained amino-functionalized porous PDVB(A-PDVB)has high surface area of 443 m2 g1 and high adsorption capacity towards fluoride anion up to 105.9 mg *** adsorbents surface area,the adsorption capacity per unit surface area of A-PDVB is 0.24 mg m2 which is more than 4 times of porous PDVB(0.058 mg m2).The enhanced adsorption performance of A-PDVB was due to amino groups electrostatic interaction coupled with hydrogen bond binding with fluoride *** addition,the aminofunctionalized porous PDVB could be regenerated in high efficiency under alkaline *** work not only exhibits the possibility of A-PDVB for application as an environment-friendly adsorbent for fluoride removal but also gives an insight into understanding mechanism of the fluoride anions adsorption onto aminofunctionalized porous PDVB.

关键词： Amino-functionalization Porous polydivinylbenzene(PDVB) Adsorption Regeneration Fluoride anion

Dimethoxymethane production via CO_(2)hydrogenation in methanol over novel Ru based hierarchical BEA

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Journal of Energy Chemistry 2022年第3期31卷 181-189,I0006页

作者： Waqar Ahmad Fan Liang Chan Abhijit Shrotri Yayati Naresh Palai huanting wang Akshat Tanksale Department of Chemical Engineering Monash UniversityClayton 3800Australia Institute for Catalysis Hokkaido UniversitySapporo 001-0021Japan

Dimethoxymethane(DMM),a diesel blend fuel,is being researched with high interest recently due to its unique fuel *** is commercially produced via a two step-process of methanol oxidation to make formaldehyde,followed by its condensation with *** study presents a one-pot method of DMM synthesis from methanol mediated carbon dioxide hydrogenation over novel heterogeneous *** effect of catalyst pore structure was investigated by synthesizing 3 wt%Ru over novel hierarchical zeolite beta(HBEASX)and comparing against Ru doped commercial zeolite beta(CBEA)and desilicated hierarchical zeolite beta(HBZDS).The results showed that 3%Ru/HBEASX provided the best activity for DMM production due to its large average pore *** also showed the decisive role of SiO_(2)/Al_(2)O_(3)molar ratio,with SiO_(2)/Al_(2)O_(3)=75 providing the highest DMM yield of 13.2 mmol/*** with ca.100%*** activity of 3%Ru/HBEAS3 after 5 recycle steps demonstrated the reusability of this catalyst.

关键词： Dimethoxymethane Methanol solvent CO_(2)hydrogenation Hierarchical BEA SiO_(2)/Al_(2)O_(3)molar ratio Ru catalysts

Chlorine-anion doping induced multi-factor optimization in perovskites for boosting intrinsic oxygen evolution

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Journal of Energy Chemistry 2021年第1期30卷 115-120,I0004页

作者： Yinlong Zhu Qian Lin Zhenbin wang Dongchen Qi Yichun Yin Yu Liu Xiwang Zhang Zongping Shao huanting wang Department of Chemical Engineering Monash UniversityClaytonVIC 3800Australia Department of Physics Technical University of Denmark2800 Kongens LyngbyDenmark School of Chemistry and Physics Centre for Materials ScienceQueensland University of TechnologyBrisbaneQueensland 4001Australia Department of Chemical Engineering Curtin UniversityPerthWestern Australia 6845Australia

The oxygen evolution reaction(OER) plays a crucial role in many electrochemical energy technologies,and creating multiple beneficial factors for OER catalysis is desirable for achieving high catalytic ***,we highlight a new halogen-chlorine(Cl)-anion doping strategy to boost the OER activity of perovskite *** a proof-of-concept,proper Cl doping at the oxygen site of LaFeO3(LFO) perovskite can induce multiple favorable characteristics for catalyzing the OER,including rich oxygen vacancies,increased electrical conductivity and enhanced Fe-O *** from these factors,the LaFeO2.9-δCl0.1(LFOCl) perovskite displays significant intrinsic activity enhancement by a factor of around three relative to its parent *** work uncovers the effect of Cl-anion doping in perovskites on promoting OER performance and paves a new way to design highly efficient electrocatalysts.

关键词： Anion doping Halogen chlorine Multiple beneficial factors Oxygen evolution reaction Perovskite oxide

Water Pollution Control for Sustainable Development

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Engineering 2019年第5期5卷 839-840页

作者： Ana Deletic huanting wang Pro Vice Chancellor School of Civil and Environmental EngineeringThe University of New South WalesSydneyNSW 2052Australia Director of the Monash Center for Membrane Innovation Department of Chemical EngineeringMonash UniversityClayton VIC 3800Australia

*** Water pollution is the major cause of ecological degradation on our planet;it directly affects human water supplies,often with serious consequences to public health.A wide range of contaminants—including chemicals,pathogens,and nutrients—has been and is currently being introduced into the natural *** and industrial effluents,as well as urban and agricultural runoffs,are damaging aquatic ecosystems on a scale never seen before.

关键词： Sustainable runoff planet

Tuning the charge distribution and crystal field of iron single atoms via iron oxide integration for enhanced oxygen reduction reaction in zinc-air batteries

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Journal of Energy Chemistry 2023年第10期85卷 154-163,I0006页

作者： Feifei Zhang Yinlong Zhu Yijun Zhong Jing Zou Yu Chen Lianhai Zu Zhouyou wang Jack Jon Hinsch Yun wang Lian Zhang Zongping Shao huanting wang Department of Chemical and Biological Engineering Monash UniversityClaytonVIC 3800Australia Institute for Frontier Science Nanjing University of Aeronautics and AstronauticsNanjing 210016JiangsuChina WA School of Mines:Minerals Energy and Chemical Engineering(WASM-MECE)Curtin UniversityPerthWA 6102Australia Key Laboratory of Interfacial Physics and Technology Shanghai Institute of Applied PhysicsChinese Academy of SciencesShanghai 201800China Monash Centre for Electron Microscopy Monash UniversityClaytonVIC 3800Australia Department of Chemical Engineering The University of MelbourneParkvilleVIC 3010Australia Centre for Catalysis and Clean Energy School of Environment and ScienceGriffith UniversityGold Coast CampusSouthportQLD 4222Australia

Metal-air batteries face a great challenge in developing efficient and durable low-cost oxygen reduction reaction(ORR)***-atom iron catalysts embedded into nitrogen doped carbon(Fe-N-C)have emerged as attractive materials for potential replacement of Pt in ORR,but their catalytic performance was limited by the symmetrical electronic structure distribution around the single-atom Fe ***,we report our findings in significantly enhancing the ORR performance of Fe-N-C by moderate Fe_(2)O_(3) integration via the strong electronic ***,the optimized catalyst(M-Fe_(2)O_(3)/Fe_(SA)@NC)exhibits excellent activity,durability and good tolerance to methanol,outperforming the benchmark Pt/C *** M-Fe_(2)O_(3)/Fe_(SA)@NC catalyst was used in a practical zinc-air battery assembly,peak power density of 155 mW cm^(-2)and specific capacity of 762 mA h g_(Zn)^(-1)were achieved and the battery assembly has shown superior cycling stability over a period of 200 *** importantly,theoretical studies suggest that the introduction of Fe_(2)O_(3) can evoke the crystal field alteration and electron redistribution on single Fe atoms,which can break the symmetric charge distribution of Fe-N_(4) and thereby optimize the corresponding adsorption energy of intermediates to promote the O_(2)*** study provides a new pathway to promote the catalytic performance of single-atom catalysts.

关键词： Single-atom catalysts Oxide nanoclusters Electronic interactions Oxygen reduction reaction Zn-air battery

Effect of oxygen plasma treatment on the nanofiltration performance of reduced graphene oxide/cellulose nanofiber composite membranes

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Green Chemical Engineering 2021年第1期2卷 122-131页

作者： Shabin Mohammed Hanaa MHegab Ranwen Ou Shasha Liu Hongyu Ma Xiaofang Chen Tam Sridhar huanting wang Department of Chemical Engineering Monash UniversityVIC3800Australia College of the Environment&Ecology Xiamen UniversityXiamenFujian361005China

Graphene based nanosheets have been widely used as building blocks for fabrication of superior separation membrane for water *** particular,membranes made of reduced graphene oxide(rGO)show better stability compared with graphene oxide(GO).However,densely stacked of rGO often results in low water *** this study,cellulose nanofibers(CNFs)were incorporated into the rGO laminates by vacuum filtration of dilute GO/CNF solution and thermal reduction at 150C for 1.5 *** resulting rGO/CNF membrane was treated with oxygen plasma for 1–4 min to create nanopores on the membrane surface for the purpose of enhancing nano-filtration *** results showed that the optimum membrane performance was obtained by using the equal amount of GO(31.83 mg m^(-2))and CNFs accompanied by 3 min of plasma treatment,exhibiting a pure water permeance of 37.23.9 L m^(-2)h^(-1)bar^(-1)maintaining a rejection above 90%for Acid Fuchsin(1.2×1.1 nm),Rose Bengal(1.5×1.2 nm)and Brilliant Blue(2.2×1.7 nm).

关键词： Graphene oxide Membrane Nanofiltration Cellulose nanofibers Oxygen plasma treatment