作者
Xiangju Song, Quanzhu Zhou, Tian Zhang, Haibo Xu, Zhining Wang
发表日期
2016
期刊
Journal of Materials Chemistry A
卷号
4
期号
43
页码范围
16896-16905
出版商
Royal Society of Chemistry
简介
Graphene-based nanomaterials have opened a new era in the fabrication of novel membranes with outstanding performance. In this study, we propose a new method of fabricating a graphene oxide quantum dot (GOQD)-incorporated thin-film nanocomposite (TFN) membrane for reverse osmosis (RO) applications. Inspired by free-standing graphene membranes prepared by vacuum filtration, an aqueous suspension of GOQD/m-phenylenediamine (MPD) was first filtered onto a polysulfone (PSf) substrate to obtain a cushion layer. A GOQD-incorporated polyamide (PA) selective layer was then constructed by interfacial polymerization between MPD and trimesoyl chloride (TMC). This method can easily be scaled up owing to its simple preparation procedures. The newly developed TFN membrane exhibited stable high performance with a flux of 37.5 L m−2 h−1 and a NaCl rejection of 98.8% at 16 bar. Remarkably …
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