Development of novel SiO₂-GO nanohybrid/polysulfone membrane with enhanced performance

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• 作者：Huiqing Wu ; Beibei Tang ; Peiyi Wu
• 关键词：Silica ; Graphene oxide ; Polysulfone ; Hybrid membrane
• 刊名：Journal of Membrane Science
• 出版年：1 February, 2014
• 年：2014
• 卷：451
• 期：Complete
• 页码：94-102
• 全文大小：2197 K

文摘

Polysulfone (PSf)-based hybrid membranes are developed by doping with SiO₂-GO nanohybrid. The hybrid membranes exhibit improved water permeability with the rejection to egg albumin maintained at a high level (>98%). Especially, when the content of SiO₂-GO in the membrane is 0.3 wt%, the water flux reaches a maximum that is nearly twice of that of PSf membrane. Compared with SiO₂/PSf and GO/PSf hybrid membranes, SiO₂-GO/PSf hybrid membrane presents the best overall properties, including water permeation rate, protein rejection, and antifouling ability. It can be attributed to the unique property of SiO₂-GO nanohybrid, i.e., the high hydrophilicity and good dispersibility derived from silica nanoparticles which are densely and uniformly coated on the GO surface and perform as a space layer of GO.