文献类型：期刊文献

英文题名：High water permeance and ion rejection through F-graphene oxide membranes

作者：Maimuli, Wuerkaixi[1];Yang, Rujie[2];Wang, Shuai[2];Liu, Junfan[1];Dai, Fangfang[3,4];Wang, Jun[2];Li, Lu[5];Chen, Liang[1,6];Liang, Shanshan[2]

机构：[1]Zhejiang A&F Univ, Dept Environm & Resources, Hangzhou 311300, Peoples R China;[2]East China Univ Sci & Technol, Sch Phys, Shanghai 200237, Peoples R China;[3]Univ Chinese Acad Sci, Wenzhou Inst, Wenzhou 325000, Peoples R China;[4]Oujiang Lab, Zhejiang Lab Regenerat Med Vis & Brain Hlth, Wenzhou 325001, Peoples R China;[5]Zhejiang A&F Univ, Coll Chem & Mat Engn, Hangzhou 311300, Peoples R China;[6]Ningbo Univ, Sch Phys Sci & Technol, Ningbo 315211, Peoples R China

年份：2022

卷号：46

期号：46

起止页码：22122

外文期刊名：NEW JOURNAL OF CHEMISTRY

收录：;EI(收录号：20224713151466);WOS:【SCI-EXPANDED(收录号:WOS:000881841800001)】；

基金：This work was supported by the National Natural Science Foundation of China (12004110, 11974366, 12074341, 12147169, 1 and 2004109), and the Fundamental Research Funds for the Central Universities. The authors thank the staff members from the BL06B beamline of Shanghai Synchrotron Radiation Facility (SSRF) for assistance during data collection.

语种：英文

外文关键词：Graphene - Membranes - Metal ions - Metals - Reclamation

摘要：Graphene oxide (GO) membranes have attracted a great deal of attention due to their special two-dimensional (2D) structure and excellent ion sieving properties. However, GO membranes for high valence metal ion rejection still suffer from the limitation of low water permeance and low stability in wastewater treatment. In this study, we reported a kind of 2,4-diamino-6-(4-fluorophenyl)pyrimidine cross-linking graphene oxide (F-GO) membrane with larger interlayer spacing and F-functioned channels, which exhibited an excellent water permeance of similar to 219.7 L m(-2) h(-1) bar(-1), which was 5.1 times higher than that of pristine GO membranes, while still maintained 99.9% ion rejection for wastewater treatment. Furthermore, the long-term stability of the F-GO membrane in nanofiltration performance was also experimentally obtained. Overall, our research demonstrates a simple way for achieving high permeances for the effective removal of high valence ions using GO-based membranes, and they may serve as the next promising materials for wastewater treatment.