随着工业的发展,废水排放量的不断增加,对环境造成了极大的污染。因此,需要一种高效的废水处理方法。膜分离技术是去除水中污染物的一种可持续、高效的现代分离技术,已被广泛应用于废水处理方面。TiO2作为一种常用的去除污染物的催化剂,具有化学稳定性好、无毒无害、催化活性高等特点。而将TiO2纳米颗粒添加至聚合物基质中制备的TiO2复合膜,不仅可以避免TiO2在水溶液中易团聚的问题,而且能提高聚合物膜在高温下的渗透选择性和稳定性。重点介绍了TiO2复合膜的制备方法,探讨了复合膜的改性技术及降解废水中污染物的机理。并针对TiO2复合膜材料在污染物降解应用中存在的问题,提出了相关研究趋势,旨在为TiO2复合膜材料的理论研究和工业推广应用提供参考依据。
With the development of industry,the increasing discharge of wastewater has caused great pollution to the environment.Therefore,an efficient wastewater treatment method is needed.Membrane separation technology is a sustainable and efficient modern separation technology for removing pollutants in water,which has been widely used in wastewater treatment.TiO2,as a commonly used catalyst for removal of pollutants,has good chemical stability,non-toxicity and harmlessness,and high catalytic activity.The TiO2 composite membrane prepared by adding TiO2 nanoparticles into polymer matrix can not only avoid the aggregation of TiO2 in aqueous solution,but also improve the permeability selectivity and stability of polymer membrane at high temperature.This paper highlighted the preparation method of TiO2 composite membrane,and discussed the modification technology of composite membrane and the mechanism of pollutant degradation in wastewater.In view of the problems existing in the application of TiO2 composite membrane materials in pollutant degradation,the related research trends were proposed,aiming to provide references for the theoretical research and industrial application of TiO2 composite membrane materials.
[1] Wang B,Chen C,Liu H T,et al.WO3/TiO2 superhydrophilic and underwater superoleophobic membrane for effective separation of oil-in-water emulsions[J].Thin Solid Films,2018,665:9-16.
[2] Bhanvase B A,Shende T P,Sonawane S H.A review on graphene-TiO2 and doped graphene-TiO2 nanocomposite photocatalyst for water and wastewater treatment[J].Environmental Technology Reviews,2017,6(1):1-14.
[3] 王宁,赵振涛,马坤怡,等.矿物材料负载TiO2光催化研究进展[J].辽宁石油化工大学学报,2021,41(3):1.
[4] 王玮敏,朱冬雪,杨宇,等.多功能光催化分离膜在水处理中的应用[J].当代化工研究,2019(4):65-66.
[5] Tang Y H,Lin Y K,Ford D M,et al.A review on models and simulations of membrane formation via phase inversion processes[J].Journal of Membrane Science,2021,640:119810.
[6] 张正华.溶液相转化法制备PSF超滤膜过程中的结构控制及其性能研究[D].杭州:浙江大学,2011.
[7] Hir Z A M,Moradihamedani P,Abdullah A H,et al.Immobilization of TiO2 into polyethersulfone matrix as hybrid film photocatalyst for effective degradation of methyl orange dye[J].Materials Science in Semiconductor Processing,2017,57:157-165.
[8] Shah L A,Malik T,Siddiq M,et al.TiO2 nanotubes doped poly (vinylidene fluoride) polymer membranes (PVDF/TNT) for efficient photocatalytic degradation of brilliant green dye[J].Journal of Environmental Chemical Engineering,2019,7(5):103291.
[9] 吴梦瑶,夏晨芸,吴佳琳,等.石墨烯类材料在膜分离领域中的应用与研究[J].表面技术,2019,48(6):73-82.
[10] Xu Z W,Wu T F,Shi J,et al.Photocatalytic antifouling PVDF ultrafiltration membranes based on synergy of graphene oxide and TiO2 for water treatment[J].Journal of Membrane Science,2016,520:281-293.
[11] Yang C Y,Wang P,Li J N,et al.Photocatalytic PVDF ultrafiltration membrane blended with visible-light responsive Fe(Ⅲ)-TiO2 catalyst:degradation kinetics,catalytic performance and reusability[J].Chemical Engineering Journal,2021,417:129340.
[12] Nawaz H,Umar M,Nawaz I,et al.Photodegradation of textile pollutants by nanocomposite membranes of polyvinylidene fluoride integrated with polyaniline-titanium dioxide nanotubes[J].Chemical Engineering Journal,2021,419:129542.
[13] 余严.聚苯硫醚超细纤维表面修饰金属有机框架材料的制备及应用[D].武汉:武汉纺织大学,2020.
[14] Razzaz A,Ghorban S,Hosayni L,et al.Chitosan nanofibers functionalized by TiO2 nanoparticles for the removal of heavy metal ions[J].Journal of the Taiwan Institute of Chemical Engineers,2016,58:333-343.
[15] Wanjale S,Birajdar M,Jog J,et al.Surface tailored PS/TiO2 composite nanofiber membrane for copper removal from water[J].Journal of Colloid and Interface Science,2016,469:31-37.
[16] Kumar P S,Venkatesh K,Gui E L,et al.Electrospun carbon nanofibers/TiO2-PAN hybrid membranes for effective removal of metal ions and cationic dye[J].Environmental Monitoring and Assessment,2018,10:366-376.
[17] Zhang X Y,Fu K,Su Z Q,et al.Fabrication of 3D MoS2-TiO2@PAN electro-spun membrane for efficient and recyclable photocatalytic degradation of organic dyes[J].Materials Science and Engineering B,2021,269:115179.
[18] Xu B,Wang X B,Huang Y Y,et al.Electrospinning preparation of PAN/TiO2/PANI hybrid fiber membrane with highly selective adsorption and photocatalytic regeneration properties[J].Chemical Engineering Journal,2020,399:125749.
[19] Lu Y W,Chen T,Chen X F,et al.Fabrication of TiO2-doped ZrO2 nanofiltration membranes by using a modified colloidal sol-gel process and its application in simulative radioactive effluent[J].Journal of Membrane Science,2016,514:476-486.
[20] Abbas F,Bensaha R.Effect of annealing time on structural and optical proprieties of mercury Hg2+ doped TiO2 thin films elaborated by sol-gel method for future photo-catalytic application[J].Optik,2021,247:167846.
[21] Ma Y D,Chen X,Wang S,et al.Significantly enhanced antifouling and separation capabilities of PVDF membrane by synergy of semi-interpenetrating polymer and TiO2 gel nanoparticles[J].Journal of Industrial and Engineering Chemistry,2021,108:15-27.
[22] 黄凯楠,吉学智,王飞,等.超滤膜技术概述[J]化工进展,2021,40(S2):219-225.
[23] Sakarkar S,Muthukumaran S,Jegatheesan V.Tailoring the effects of titanium dioxide (TiO2) and polyvinyl alcohol (PVA) in the separation and antifouling performance of thin-film composite polyvinylidene fluoride (PVDF) membrane[J].Membranes,2021,11(4):241.
[24] Sumithraarachchi S A D A V,Thilakarathna B D K K,Bandara Jayasundera.TiO2 encapsulated cross-linked polystyrene-polyacrylic acid membranes for waste oil-water separation[J].Journal of Environmental Sciences,2021,9(4):105394.
[25] Mao C C,Wang X,Zhang W,et al.Super-hydrophilic TiO2-based coating of anion exchange membranes with improved antifouling performance[J].Colloids and Surfaces A,2021,614:126136.
[26] Li T,Xiao Y R,Guo D X,et al.In-situ coating TiO2 surface by plant-inspired tannic acid for fabrication of thin film nanocomposite nanofiltration membranes toward enhanced separation and antibacterial performance[J].Journal of Colloid and Interface Science,2020,572:114-121.
[27] Liu Z J,Zhang C Y,Zhang X G,et al.Durable superhydrophobic PVDF/FEVE/GO@TiO2 composite coating with excellent anti-scaling and UV resistance properties[J].Chemical Engineering Journal,2021,411:128632.
[28] Isawi H.Development of thin-film composite membranes via radical grafting with methacrylic acid/ZnO doped TiO2 nanocomposites[J].Reactive and Functional Polymers,2018,131:400-413.
[29] Zhang X H,Wei C J,Ma S Y,et al.Janus poly (vinylidene fluoride)-graft-(TiO2 nanoparticles and PFDS) membranes with loose architecture and asymmetric wettability for efficient switchable separation of surfactant-stabilized oil/water emulsions[J].Journal of Membrane Science,2021,640:119837.
[30] Tran M L,Fu C C,Chiang L Y,et al.Immobilization of TiO2 and TiO2-GO hybrids onto the surface of acrylic acid-grafted polymeric membranes for pollutant removal:Analysis of photocatalytic activity[J].Journal of Environmental Engineering,2020,8(5):104422.
[31] Carey J H,Lawrence J,Tosine H M.Photodechlorination of PCB's in the presence of titanium dioxide in aqueous suspensions[J].Bulletin of Environmental Contamination and Toxicology,1976,16(6):697-701.
[32] Mohamed A,Salama A,Nasser W S,et al.Photodegradation of Ibuprofen,Cetirizine,and Naproxen by PAN-MWCNT/TiO2-NH2 nanofiber membrane under UV light irradiation[J].Environmental Sciences Europe,2018,30(1):1-9.
[33] Liu Y W,Li S Y,Xie J L,et al.Tuning antibacterial properties of poly (vinyl alcohol)/TiO2 composite films by chemically grafting with 3,3′,4,4′-biphenyltetracarboxylic acid[J].Polymer Testing,2021,102:107307.
[34] Du C X,Wang Z H,Liu G Y,et al.One-step electrospinning PVDF/PVP-TiO2 hydrophilic nanofiber membrane with strong oil-water separation and anti-fouling property[J].Colloids and Surfaces A,2021,624:126790.
[35] Zhou A R,Jia R B,Wang Y L,et al.Abatement of sulfadiazine in water under a modified ultrafiltration membrane(PVDF-PVP-TiO2-dopamine) filtration-photocatalysis system[J].Separation and Purification Technology,2020,234:116099.
[36] Gebru K A,Das C.Removal of chromium(Ⅵ) ions from aqueous solutions using amine-impregnated TiO2 nanoparticles modified cellulose acetate membranes[J].Chemosphere,2018,191:673-684.
[37] Ma D Y,Zou X Q,Zhao Z H,et al.Hydrophilic PAA-g-MWCNT/TiO2@PES nano-matrix composite membranes:anti-fouling,antibacterial and photocatalytic[J].European Polymer Journal,2022:111006.
[38] 黄庆林,肖长发,胡晓宇,等.聚四氟乙烯膜的制备及性能[J].高分子材料科学与工程,2010,26(5):123-126.
[39] 江鹏.GO-TiO2改性PVDF超滤膜的制备及其截留性能研究[D].广州:广东工业大学,2017.
[40] 曾祥蕊,卫静,刘欣.TiO2光催化剂改性研究进展[J].环境保护与循环经济,2019,39(8):28-31.
基金资助
国家自然科学基金(21878024);辽宁省高等学校创新团队项目(2018479-14和LT2015001)
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