Low-Fouling Antibacterial Reverse Osmosis Membranes via Surface Grafting of Graphene Oxide

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• 作者：Xinwei Huang ; Kristofer L. Marsh ; Brian T. McVerry ; Eric M. V. Hoek ; Richard B. Kaner
• 刊名：ACS Applied Materials & Interfaces
• 出版年：2016
• 出版时间：June 15, 2016
• 年：2016
• 卷：8
• 期：23
• 页码：14334-14338
• 全文大小：281K
• 年卷期：0
• ISSN：1944-8252

文摘

Azide-functionalized graphene oxide (AGO) was covalently anchored onto commercial reverse osmosis (RO) membrane surfaces via azide photochemistry. Surface modification was carried out by coating the RO membrane with an aqueous dispersion of AGO followed by UV exposure under ambient conditions. This simple process produces a hydrophilic, smooth, antibacterial membrane with limited reduction in water permeability or salt selectivity. The GO-RO membrane exhibited a 17-fold reduction in biofouling after 24 h of Escherichia coli contact and almost 2 times reduced BSA fouling after a 1 week cross-flow test compared to its unmodified counterpart.