氧化石墨烯(GO)作为一种新兴的碳纳米材料,具有较大的比表面积和表面丰富的官能团,其潜在的应用前景广阔。近年来聚偏氟乙烯(PVDF)超滤膜在去除天然有机物方面表现出色,为弥补PVDF膜亲水性差的缺陷,常引入GO提高PVDF膜的亲水性能,GO作为阳离子吸附剂的优势突显。从GO与有机高分子聚合物共混PVDF、GO与无机纳米材料共混改性PVDF以及GO与碳纳米管共混改性PVDF这3个方面介绍了GO/PVDF共混复合膜的研究进展。
As a new carbon nanomaterial,graphene oxide has a high specific surface area and rich functional groups on the surface.It has potential application scenes in all industries.In recent years,PVDF ultrafiltration membrane has made a qualitative breakthrough in the removal of natural organic matter.In order to make up the characteristics of poor hydrophilicity of PVDF,it has become a common way to introduce GO to improve the hydrophilic property of the membrane.The advantage of GO as a cationic adsorbent was revealed.The modification of GO by physical method was introduced from the blending of GO and organic polymer,PVDF,GO and inorganic nanomaterial blend modified PVDF and GO and carbon nanotube blending modified PVDF three aspects.By testing the hydrophilicity,water flux,and pollution resistance of the membrane,determined whether the three kinds of polymer materials were complex or not.The improvement of membrane quality provided a theoretical basis for the application of graphene oxide composite membrane in the field of water treatment.The method of physical modification was mild and efficient,which had greater opportunities and challenges in improving composite membranes.
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基金资助
江苏省自然科学基金资助项目(BK20170249);江苏省高等学校自然科学研究面上项目(17KJB610012);徐州工程学院科研项目(XKY2016121)
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