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Chemical Research in Chinese Universities 2021年第3期37卷 528-534页

作者： YU Ruomeng SHI Yongzheng YANG Dongzhi Beijing Key Laboratory of Advanced Functional Polymer Composites College of Materials Science and EngineeringBeijing University of Chemical TechnologyBeijing100029P.R.China

Micro-size oil adsorbents are effective for the rapid remediation of special oil ***,N-doped reduced graphene oxide(RGO)microspheres(ca.150µm in diameter)with a local radially aligned and porous structure are fabricated by combining electrospray-freeze-drying with thermal treatment for rapid separation of *** to its hydrophobic/oleophilic properties and oriented structure,the N-doped RGO microspheres achieve high capacities and fast adsorption rates for a variety of oils and organic ***,excellent oil-water separation performance on floating oil/oil-water emulsions and stable cyclic adsorption capacities are obtained for the local radially aligned and porous ***,N-doped RGO microspheres with the unique porous structure have the potential for the remediation of oily sewage and oil spills.

关键词： Electrospray Radially aligned structure Microsphere Reduced graphene oxide oil-water separation

Simultaneously spray-assisted assembling reversible superwetting coatings for oil-water separation

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Chinese Journal of Chemical Engineering 2021年第4期34卷 144-150页

作者： Dexin Chen Zhixin Kang Wei Li Fenghua Su Institute of Advanced Wear&Corrosion Resistant and Functional Materials Jinan UniversityGuangzhou 510632China Shaoguan Research Institute of Jinan University Shaoguan 512027China School of Mechanical and Automotive Engineering South China University of TechnologyGuangzhou 510640China

Here,superhydrophobic cuprous oxide(Cu2O)with hierarchical micro/nanosized structures was synthesized via sprayassisted layer by layer *** asprepared superhydrophobic meshes with high contact angle(159.6°)and low sliding angle(1°)are covered with Cu_(2)O "coral reef"like micro/nanosized ***,the superhydrophobic mesh surfaces became superhydrophilic again due to the oxidization of Cu_(2)O to CuO by annealing at a higher temperature(300℃).And the superhydrophobic properties would be recovered by heating at 120℃.Furthermore,the superwetting meshes were applied to design a miniature device to separate light or heavy oil from the wateroil mixtures with excellent separation *** superwetting surfaces by simultaneously sprayassisted layer by layer assembling technique show the potential application in universal oilwater separation.

关键词： Simultaneously spray deposition Superhydr ophobicity Reversible superwetting oil-water separation

Superhydrophobic magnetic Fe_(3)O_(4) polyurethane sponges for oil-water separation and oil-spill recovery

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Journal of Environmental Sciences 2024年第5期139卷 160-169页

作者： Shiyu Wu Yunjie Xiang Yaqi Cai Jingfu Liu Sino-Danish College University of Chinese Academy of SciencesBeijing 100049China State Key Laboratory of Environmental Chemistry and Ecotoxicology Research Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China School of Environment Hangzhou Institute for Advanced StudyUCASHangzhou 310024China School of Environmental Science and Engineering Southern University of Science and TechnologyShenzhen 518055China

The effective and affordable separation of oil and water,a crucial process in the safe han dling of environmental disasters such as crude oil spills and recovery of valuable resources is a highly sought-after yet challenging ***,superhydrophobic PU sponge was fab ricated for the fast and cost-effective adsorptive separation of oil and different organic sol vents from ***(OTS)-functionalized Fe_(3)O_(4)@SiO_(2)core-shell mi crospheres were dip-coated on the surface of porous materials via a dip-coating process thereby endowing them with *** to the hydrophobic interaction between OTS molecules and oil and increased capillary force in the micropores,the result ing superhydrophobic sponge served as a selective oil-sorbent scaffold for absorbing oil from oil-water mixtures,including oil-water suspensions and ***,after the recovery of the adsorbed oil via mechanical extrusion,these superhydrophobic materials could be reused multiple times and maintain their oil-water separation efficacy even afte 10 oil-water separation cycles.

关键词： Fe_(3)O_(4)@SiO_(2)-OTS polyurethane sponge oil-water separation Adsorption capacity oil-spill recovery

Preparation of Silica Nanosphere with Vertical Pore and Its Application in oil-water separation

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Journal of Wuhan University of Technology(Materials Science) 2023年第2期38卷 299-303页

作者： FAN Hui CAI Yun BAI Ping YUAN Qinwen WANG Dong CHEN Yuanli State Key Laboratory of New Textile Materials and Advanced Processing Technologies of China Key Laboratory of Textile Fiber and ProductsMinistry of EducationHubei International Scientific and Technological Cooperation Base of Intelligent Textile Materials&ApplicationWuhan Textile UniversityWuhan430200China

Uniform monodispersed mesoporous silica nanospheres with vertical pores were successfully synthesized using chiral amphiphilic small molecule L-16Ala5PyClO4and solvents as dual templates via solgel *** morphologies and pore sizes of silicas are adjustable by changing the type and amount of solvents in the reaction *** the increase of the organic solvent content,the morphologies of the obtained silica changed from nanospheres with vertical pore structures to nanosheets *** 1 mL of benzene,cyclohexane or toluene were used as solvents,only silica nanospheres were obtained,the BET surface areas of silica nanospheres reached 600.7,669.5,and 560.8 m^(2)/g,*** pore sizes were 3.51,3.54,and 3.46 nm,***,these ordered silica nanospheres/poly(vinyl alcohol-co-ethylene)(PVAco-PE)nanofiber membranes have high separation efficiencies(>99%)for n-hexane/water mixtures.

关键词： sol-gel preparation mesoporous silica nanosphere oil-water separation

Tailoring Morphology of PVDF-HFP Membrane via One-step Reactive Vapor Induced Phase separation for Efficient oil-water separation

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Chinese Journal of Polymer Science 2021年第5期39卷 610-619,I0007页

作者： Peng Huo Cheng-Tang Zhong Xiao-Peng Xiong Department of Materials Science and Engineering College of MaterialsXiamen UniversityXiamen 361005China

Poly(vinylidene fluoride-co-hexafluoropropylene)(PVDF-HFP)receives increasing attention in membrane separation field based on its advantages such as high mechanical strength,thermal and chemical ***,controlling the microporous structure is still *** this work,we attempted to tailor the morphology of PVDF-HFP membrane via a one-step reactive vapor induced phase separation ***,PVDF-HFP was dissolved in a volatile solvent and then was cast in an ammonia water vapor *** complete evaporation of solvent,membranes with adjustable porous structure were prepared,and the microstructures of the membranes were analyzed by scanning electron microscopy,Fourier transform infrared spectroscopy,X-ray photoelectron spectroscopy and X-ray diffraction *** on the results,a mechanism of dehydrofluorination induced cross-linking of PVDF-HFP has been suggested to understand the morphology *** our knowledge,this is the first report of one-step reactive vapor induced phase separation strategy to tailor morphology of PVDF-HFP *** addition,the membranes prepared in the ammonia water vapor exhibited enhanced mechanical strength and achieved satisfactory separation efficiency for water-in-oil emulsions,suggesting promising potential.

关键词： PVDF-HFP Membrane Tailoring Vapor induced phase separation oil-water separation

Fabrication of Bioinspired Structured Superhydrophobic and Superoleophilic Copper Mesh for Efficient oil-water separation

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Journal of Bionic Engineering 2017年第3期14卷 497-505页

作者： Yan Song Yan Liu Bin Zhan Cigdem Kaya Thomas Stegmaier Zhiwu Han Luquan Ren Key Laboratory of Bionic Engineering (Ministry of Education) Jilin University Changchun 130022 China Institute of Textile Technology and Process Engineering Denkendorf University of Stuttgart Germany

oily water treatment has attracted the attention of many researchers. The development of effective and cheap oil/water separation materials is urgent for treating this problem. Herein, inspired by superhydrophobic typical plant leaves such as lotus, red rose and marigold, superhydrophobic and superoleophilic copper mesh was fabricated by etching and then surface modi- fication with 1-dodecanethiol （HS（CH2）IlCH3）. A rough silver layer is formed on the mesh surface after immersion. The ob- tained mesh surface exhibits superhydrophobicity and superoleophilicity and the static water contact angle was 153~ ＋ 3~. In addition, the as-prepared copper mesh shows self-cleaning character with water and chemical stability. The as-prepared copper foam can easily remove the organic solvents either on water or underwater. We demonstrate that by using the as-prepared mesh, oils can be absorbed and separated, and that high separation efficiencies of larger than 92% are retained for various oils. Thus, such superhydrophobic and superoleophilic copper mesh is a very promising material for the application ofoil spill cleanup and industrial oily wastewater treatment.

关键词： bionic superhydrophobic oil-water separation superoleophilic copper mesh

Dodecyl Mercaptan Functionalized Copper Mesh for water Repellence and oil-water separation

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Journal of Bionic Engineering 2021年第4期18卷 887-899页

作者： Yanling Tian Jiekai Feng Zexin Cai Jiaqi Chao Dawei Zhang Yuxiao Cui Faze Chen School of Mechanical Engineering Tianjin UniversityTianjin 300072China Key Laboratory of Mechanism Theory and Equipment Design of Ministry of Education Tianjin UniversityTianjin 300072China School of Engineering University of WarwickCoventry CV47DLUK School of Mechanical Engineering Tianjin University of Technology and EducationTianjin 300222China

Reckless discharge of industrial wastewater and domestic sewage as well as frequent leakage of crude oil have caused serious environmental problems and posed severe threat to human *** nature inspired superhy-drophobic surfaces have been successfully applied in oily water ***,further improvements are still urgently needed for practical application in terms of facile synthesis process and long-term durability towards harsh ***,we propose a simple one-step dodecyl mercaptan functionalization method to fabricate Super-hydrophobic-Superoleophilic Copper Mesh(SSCM).The prepared SSCM possesses excellent water repellence and oil affinity,enabling it to successfully separate various oil-water mixtures with high separation efficiency(e.g.,>99%for hexadecane-water mixture).The SSCM retains high separating ability when hot water and strong corrosive aqueous solutions are used to simulate oil-water mixtures,indicating remarkable chemical durability of the dodecyl mercaptan functionalized copper ***,the efficiency can be well maintained during 50 cycles of separation,and the water repellence is even stable after storage in air for 120 days,demonstrating the reusability and long-term stability of the ***,the functionalized mesh also shows good mechanical robustness towards abrasion by sandpaper,and oil-water separation efficiency of>96%can be obtained after 10 cycles of *** reported one-step dodecyl mercaptan functionalization could be a simple method for increasing the water repellence of copper mesh,and thereby be a great candidate for treating large-scale oily wastewater in harsh environments.

关键词： copper mesh superhydrophobic oil-water separation stability reusability

Preparation of Hydrophobic Fly Ash by Surface Modification and oil-water separation Devices

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Journal of Wuhan University of Technology(Materials Science) 2023年第3期38卷 695-700页

作者：于阳剑刘鹏 WANG Fazhou HU Chuanlin School of Chemistry Chemical Engineering and Life ScienceWuhan University of TechnologyWuhan 430070China State Key Laboratory of Silicate Materials for Architectures Wuhan University of TechnologyWuhan 430070China

A simple and effective superhydrophobic mesh was designed and made to separate oil-water mixture. Alkali-activated fly ash reacted with 1-bromooctadecane to prepare superhydrophobic modified fly ash (MFA) with low surface energy through Williamson ether synthesis. The MFA powder was then coated uniformly on a stainless steel mesh (SSM) along with the epoxy resin E44 and curing agent T31 to give the superhydrophobic MFA-modified stainless steel mesh (MFA-SSM). The MFA-SSM has a high static water contact angle (CA) of 150.1°and can separate various oil or organic solvent from water with>95%separation efficiency. The oil-water separation efficiency remained high after 30 runs of petroleum ether/water *** developed superhydrophobic stainless steel mesh is expected to have wider use in oil-water separation.

关键词： oil-water separation superhydrophobic stainless steel mesh Williamson ether synthesis

Functional flax fiber with UV-induced switchable wettability for multipurpose oil-water separation

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Frontiers of Environmental Science & Engineering 2022年第12期16卷 43-54页

作者： Xiujuan Chen Yunqiu Liu Gordon Huang Chunjiang An Renfei Feng Yao Yao Wendy Huang Shuqing Weng Department of Civil Engineering University of CalgaryCalgaryAlbertaT2N 1N4Canada Institute for Energy Environment and Sustainable CommunitiesUniversity of ReginaReginaSaskatchewanS4S 0A2Canada Environmental Systems Engineering University of ReginaReginaSaskatchewanS4S 0A2Canada Department of Building Civil and Environmental EngineeringConcordia UniversityMontrealQuebecH3G 1M8Canada Canadian Light Source SaskatoonSKS7N 2V3Canada McElhanney Inc CranbrookBritish ColumbiaV1C 7H9Canada

The large number of oily wastewater discharges and oil spills are bringing about severe threats to environment and human *** to this challenge,a functional PAA-ZnO-HDTMS flax fiber with UV-induced switchable wettability was developed for efficient oil-water separation in this *** developed flax fiber was obtained through PAA grafted polymerization and then ZnO-HDTMS nanocomposite *** as-prepared PAA-ZnO-HDTMS flax fiber was hydrophobic initially and could be switched to hydrophilic through UV *** hydrophobicity could be easily recovered through being stored in dark environment for several *** optimize the performance of the PAA-ZnO-HDTMS flax fiber,the effects of ZnO and HDTMS concentrations on its switchable wettability were *** optimized PAA-ZnO-HDTMS flax fiber had a large water contact angle(∼130°)in air and an extremely small oil contact angle(∼0°)underwater *** UV treatment,the water contact angle was decreased to 30°,while the underwater oil contact angle was increased to more than 150°.Based on this UV-induced switchable wettability,the developed PAA-ZnO-HDTMS flax fiber was applied to remove oil from immiscible oil-water mixtures and oil-in-water emulsion with great reusability for multiple ***,the developed flax fiber could be further fabricated into oil barrier or oil sorbent for oil-water separation,which could be an environmentally-friendly alternative in oil spill response and oily wastewater treatment.

关键词： Flax fiber Switchable wettability ZnO-HDTMS coating oil-water separation

A Facile and Green Construction of Biomimetic, Fluorine-free and Superhydrophobic Melamine Sponge with Magnetic-driven Function for Efficient oil–water separation and oil Absorption

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Journal of Bionic Engineering 2021年第5期18卷 1168-1178页

作者： Chenchen Liao Yurou Xia A.Yinaer Nu Keshen Boya Dai Song’an Zhao Ziqing Hu Zaihang Zheng Yan Liu School of Chemical Engineering Changchun University of TechnologyChangchun 130012China Key Laboratory of Bionic Engineering(Ministry of Education) Jilin UniversityChangchun 130022China

Inspired by nature,a superhydrophobic and magnetic melamine sponge(BFSM-MF)was fabricated by a one-step dip-coating *** at replacing nano-Fe_(3)O_(4) particles with a complex preparation process and high cost,the commercial and cheap Fe_(3)O_(4) originated from magnetite was employed as a magnetic *** acquire superhydrophobicity,the hierarchical mirco/nano-sized structure with low surface energy was mainly contributed by bonding hydrophobic Fe_(3)O_(4) and graphene with silicone resin onto the surface of the melamine *** results demonstrated that the water and oil static contact angle values of BFSM-MF were 160°and 0°,revealing that BFSM-MF was superhydrophobic and ***,the self-cleaning ability,magnetic-driven oil absorption ability and continuous oil–water separation performance of BFSM-MF have also been *** expected,BFSM-MF possessed magnetic-driven oil absorption ability and the oil–water separation efficiency for light oil reaches 98%±1%.In addition,the adsorption capacity and recycling performance of diff erent organic solvents were systematically ***,the development of biomimetic,fluorine-free and superhydrophobic foam with magnetic-driven eff ect has potential application value in marine oil spill treatment and separation of domestic oil pollution.

关键词： Biomimetic Superhydrophobic Fluorine-free Melamine sponge oil-water separation