文献类型：期刊文献

英文题名：Controlling interlayer spacings of graphene oxide membranes with cationic for precise sieving of mono-/multi-valent ions

作者：Liang, Shanshan[1,2];Wang, Shuai[2,3];Chen, Liang[4];Fang, Haiping[1,2]

机构：[1]East China Univ Sci & Technol, Dept Phys, Shanghai 200237, Peoples R China;[2]Chinese Acad Sci, Shanghai Inst Appl Phys, Div Interfacial Water, Shanghai 201800, Peoples R China;[3]Shanghai Univ, Shanghai Appl Radiat Inst, Shanghai 20444, Peoples R China;[4]Zhejiang A&F Univ, Dept Opt Engn, Hangzhou 311300, Zhejiang, Peoples R China

年份：2020

卷号：241

外文期刊名：SEPARATION AND PURIFICATION TECHNOLOGY

收录：;EI(收录号：20200808202742);WOS:【SCI-EXPANDED(收录号:WOS:000527318800016)】；

基金：This work was financially supported by the National Natural Science Foundation of China (No. 11974366, 11574339, U1832150).

语种：英文

外文关键词：Graphene oxide membrane; Interlayer spacing; Ions rejection; Mono-/multi-valent ions separation

摘要：Ion sieving is of great importance in a variety of applications, including water purification, bio-medical engineering, resource utilization and environment protection. Despite previous efforts, the separation efficiency for mono-/multi valent ions is still far from satisfactory. Here, we use high concentration of KCl solution to control the interlayer spacings of graphene oxide (GO) membranes. Then, these KCl-controlled GO membranes can precisely sieve mono-/multi-valentions, especially for Na+/Mg2+ separation. The excellent performance of the membranes can be attributed to the narrower interlayer spacings of KCl-controlled GO membranes.