石墨烯掺杂聚砜基正渗透膜的结构和性能

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1、石墨烯掺杂聚砜基正渗透膜的结构和性能胡念左浩然付佳葰吕慧童奕皓刘慧清亶贵r华东理工大学化学工程联合国家重点实验室采用相转化法分别制备丫掺杂有石墨、石墨烯和氧化石墨烯的聚砜正渗透（F0）膜支撑层，通过间苯二胺和均苯三甲酰氯间的界而聚合在支撑层表而制备了聚酰胺活性层。采用扫描电子显微镜（SEM）表征膜表面和断面的结构形貌，测定膜孔隙率和亲水性，考察不同掺杂物时1^0膜的性能。结果表明，掺杂石墨烯和氧化石墨烯，支撑层断面结构更加疏松，孔隙率和纯水透过常数（PWP）明显增加，制备的相应F0膜性能得到改善，水通量增大。掺杂石墨则导致支

2、撑层上表而变粗糙，断而结构密实，其孔隙率减小，PWP值降低，膜性能变差。其中，掺杂了氧化石墨烯的F0膜表现出最好的性能，水通量在活性层朝向驱动液侧（AL-DS）模式下可达37.10L/（m2Xh）,相比无掺杂F0膜增加了38.7%。关键词：氧化石墨饰;掺柴;正渗透;膜；结构;性能;胡念（1992—），女，研宂生，研宂方向为正渗透。E-mail:hul8702151940@163.com。曹贵平，教授，研究方向为聚合物、催化剂和复合材料等。E-rnail:gpcao@ecust.edu.cn。2017-03-22基金：上海市教

3、育委员会科研创新重点项目（14ZZ062）StructureandperformanceofforwardosmosismembranesbasedonpolysulfonesubstratesincorporatedwithgrapheneHUNianZUOHaoranFUJiabeiLt)HuiTONGHhaoLIUHuiqingCAOGuipingStateKeyLaboratoryofChemicalEngineering，EastChinaUniversityofScienceandTechnology;Abstr

4、act：Polysulfonesupportinglayersincorporatedwithgraphite(GI)，graphene(GE)，andgrapheneoxide(GO)wererespectivelypreparedbyphaseinversionmethod.Thenthepolyamideactivelayerswerepreparedviainterfacialpolymerizationofm-phenylenediamineandtrimesoylchlorideonthesupportingla

5、yers.ThemorphologiesoftopsurfaceandcrosssectionofthemembraneswerecharacterizedbySEM.Theporosity,hydrophilicityandperformanceofFOmembraneswithdifferentincorporatedadditiveswereinvestigated.Theresultsshowedthatthestructuresofthecrosssectionofthesupportinglayersincorp

6、oratedwithGEorGOwerelooser,resultinginincreasedporosityandpurewaterpermeability(PWP)constant.ThusthepropertiesofcorrespondingFOmembraneswereimproved.However,theincorporatingofGlresultedinthepreparedmembranewithroughsurface,densecrosssection,lowerPWPconstant,andwors

7、eperformance.TheFOmembranepreparedonthesupportinglayerincorporatedwithGOexhibitedthebestperformance.Thewaterfluxreached37.10L/(mJXh)undertheAL-DSmembraneorientation,increasedby38.7%comparedwithFOmembranepreparedonpurepolysulfonesubstrate.Keyword：grapheneoxide;incor

8、poration;forwardosmosis;membrane;structure;performance;Received：2017-03-22淡水资源短缺一直是全球而临的重大问题，海水淡化等水处理是解决淡水资源短缺的主要途径之一U1。目前，反渗透技术在水净化领域应用较为广泛，但反渗透