石墨烯
膜
氧化物
离子
化学工程
分子筛
筛子(范畴论)
材料科学
化学
无机化学
纳米技术
有机化学
催化作用
数学
工程类
冶金
生物化学
组合数学
作者
Shanshan Liang,Shuai Wang,Liang Chen,Haiping Fang
标识
DOI:10.1016/j.seppur.2020.116738
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.
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