文献类型：期刊文献

英文题名：Robust KOH-thiourea-graphene oxide cross-linked membranes for desalination

作者：Yang, Rujie[1,2];Wang, Youwan[1];Zhang, Jiahao[1];Maimuli, Wuerkaixi[3];Chen, Liang[4];Song, Yongshun[1];Wang, Zimeng[5];Liang, Shanshan[1,2,6];Fang, Haiping[1,2]

机构：[1]East China Univ Sci & Technol, Sch Phys, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Natl Engn Res Ctr Ind Wastewater Detoxicat & Resou, Shanghai 200237, Peoples R China;[3]Zhejiang A&F Univ, Dept Environm & Resources, Hangzhou 311300, Peoples R China;[4]Ningbo Univ, Sch Phys Sci & Technol, Ningbo 315211, Peoples R China;[5]Shanghai Normal Univ, Coll Chem & Mat Sci, Shanghai 200234, Peoples R China;[6]China Univ Petr Beijing Karamay, Karamay 834000, Xinjiang, Peoples R China

年份：2023

卷号：568

外文期刊名：DESALINATION

收录：;EI(收录号：20230204022);WOS:【SCI-EXPANDED(收录号:WOS:001092031900001)】；

基金：This work was supported by the National Natural Science Foundation of China (12004110, 12074341, 11974366, 12147169, 12004109) , and the Fundamental Research Funds for the Central Universities. The staff members from the BL06B beamline of Shanghai Synchrotron Radiation Facility (SSRF) are gratefully acknowledged for their help during data collection.

语种：英文

外文关键词：Graphene oxide membrane; Cross-linking; Cation -pi interactions; Interlayer spacing; Desalination

摘要：Due to the well-defined two-dimensional nanochannel nanostructures, graphene oxide (GO) membranes hold huge possibilities for sustainable brackish water desalination and wastewater purification. However, achieving effective nanofiltration performance and sufficient structural stability of GO membranes in aqueous environments remains a major obstacle. Herein, the TU-GO-KOH membrane -the GO membrane cross-linked by thiourea (TU) after KOH treatment, was prepared for achieving relatively high water permeance (similar to 14.2 Lm(- 2) h(-1)) and high rejection (similar to 86.3 %) for NaCl rejection. These performances exceeded the nanofiltration performances of most GO-based membranes and commercial membranes reported in the literature. More importantly, the TUGO-KOH membrane exhibited excellent separation stability over long-term (for 168 h) and under high pressures (up to 9 bar). Furthermore, even under ultra-sonication treatment and after long-term immersion in solutions with harsh pH values, the TU-GO-KOH membrane still maintained its own stability, which holds considerable promise for sustainable water treatment under harsh conditions. Additionally, the TU-GO-KOH membrane also showed enhanced mechanical properties. Overall, the superior desalination performance and notable stability of the TU-GO-KOH membrane make it a highly promising candidate for practical desalination and wastewater treatment.