氧化石墨烯改性PMIA膜的制备及性能研究

发布时间：2018-04-28 01:02

本文选题：氧化石墨烯 + 复合纳滤膜　；参考：《水处理技术》2017年07期

【摘要】：通过氧化石墨烯(GO)改性聚间苯二甲酰间苯二胺(PMIA)膜,制备出复合纳滤膜,测试了不同GO含量对膜的各种性能和结构的作用;分别通过扫描电镜、接触角、ζ电位仪测定膜的亲水性、表面性能、结构,并以牛血清蛋白测试其抗污染性。结果表明,PMIA/GO膜的内部会出现较大的指状孔结构,而未改性PMIA膜内无指状孔;PMIA/GO复合膜相比与未改性的PMIA膜其具有更高的电负性和亲水性。当操作压力为0.7 MPa、当加入的GO的质量分数为0.3%的时,膜具有145 L/(m2·h)的纯水通量,比纯PMIA膜的纯水通量提高约2.6倍。在PMIA/GO复合纳滤膜具有优异的抗污染能力。
[Abstract]:The composite nanofiltration membrane was prepared by modifying the polyisophthalyl resorcinenediamine (PMIA) membrane with graphene oxide (GOO). The effects of different go contents on the properties and structure of the membrane were tested, respectively, by scanning electron microscopy (SEM). The hydrophilicity, surface properties and structure of the membrane were measured by contact angle and 味 potentiometer, and the antifouling property of the membrane was tested by bovine serum protein (BSA). The results show that the inner structure of PMIA / go membrane is larger than that of unmodified PMIA membrane, and the composite membrane of PMIA / go composite membrane has higher electronegativity and hydrophilicity than that of the unmodified PMIA membrane. The results show that the PMIA / go composite membrane has higher electronegativity and hydrophilicity than the unmodified PMIA / go composite membrane. When the operating pressure is 0.7 MPA and the mass fraction of go is 0.3%, the pure water flux of the membrane is 145 L/(m2 / h, which is about 2.6 times higher than that of pure PMIA membrane. The composite nanofiltration membrane in PMIA/GO has excellent antifouling ability.
【作者单位】：河北工业大学化工学院;中国科学院生态环境研究中心环境水质学国家重点实验室;
【基金】：国家自然科学基金(21476248) “十二五”国家科技支撑计划项目(2012BAJ25B02,2012BAJ25B06)
【分类号】：TQ051.893

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