期刊
CHEMICAL PHYSICS LETTERS
卷 775, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.cplett.2021.138657
关键词
Graphene-based materials; Nanostructure; Membrane
资金
- Open Fund of the State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation (Southwest Petroleum University) [PLN161, PLN201806]
- Research Program of Science and Technology Department of Sichuan Province [2018JY0302, 2018JY0517, 18YYJC0018, 2020JDJQ0057]
- National Natural Science Foundation of China [51774245]
In this study, N-doped graphene was intercalated with graphene oxide membranes to form GNM, which significantly enhanced water flux and dye separation efficiency while maintaining stability in water purification processes.
Due to their tunable nanostructure, graphene oxide membranes (GOMs) have attracted numerous researchers in the water purification fields. However, the practical application of GOMs has been impeded by their low flux and tendency to swell during operation. In this work, we intercalated GOMs with N-doped graphene (NG), which possesses a higher water dispersibility compared to unmodified graphene, to simultaneously improve its stability, water permeability, and water/dye separation ability. The composite GO-NG membrane (GNM) enhanced the water flux to approximately 3 times higher than that of GOM, with higher than 98% rejection for various dyes. GNM remained stable during this purification.
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