材料科学
界面聚合
碳纳米管
膜
薄膜复合膜
纳米复合材料
聚酰胺
正渗透
化学工程
石墨烯
微滤
浓差极化
氧化物
逐层
纳米管
反渗透
图层(电子)
复合材料
纳米技术
聚合物
单体
工程类
冶金
生物
遗传学
作者
Zhao Wang,Huiyuan Liu,Yue Liu,Meipeng Jian,Li Gao,Huanting Wang,Xiwang Zhang
标识
DOI:10.1021/acsami.8b10550
摘要
A novel thin-film nanocomposite forward-osmosis (FO) membrane was fabricated on hydrophilic nylon microfiltration (MF) support by interfacial polymerization with the assistance of an intermediate layer of graphene oxide and multiwall carbon nanotube (GO/MWCNT). The chemical composition, structure, and surface properties of the synthesized FO membranes were studied using various characterization methods. It was found that the GO/MWCNT composite layer not only provided ultrafast nanochannels for water transport but also reduced the thickness of the polyamide layer by up to 60%. As a result, the novel FO membrane exhibited a higher water flux and lower reverse salt flux compared with the membrane synthesized without the GO/MWCNT intermediate layer. This method offers promising opportunities to fabricate thin-film composite membranes on microfiltration substrates for FO application with inhibited concentration polarization phenomenon and expected separation performance.
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