文献类型：期刊文献

英文题名："Network-trapped engineering" of graphene oxide membrane with stable structure

作者：Huang, Yi[1];Qiang, Yu[2];Yi, Ruobing[4];Wang, Shuai[2];Liang, Shanshan[2,5];Chen, Liang[1,3]

机构：[1]Zhejiang A&F Univ, Coll Optomech Engn, Hangzhou 311300, Peoples R China;[2]East China Univ Sci & Technol, Sch Phys, Shanghai 200237, Peoples R China;[3]Ningbo Univ, Sch Phys Sci & Technol, Ningbo 315211, Peoples R China;[4]Xi An Jiao Tong Univ, Sch Phys, Key Lab Nonequilibrium Synth & Modulat Condensed M, MOE, Xian 710049, Peoples R China;[5]China Univ Petr, Karamay 834000, Xinjiang, Peoples R China

年份：2025

卷号：715

外文期刊名：JOURNAL OF MEMBRANE SCIENCE

收录：;EI(收录号：20244517308809);WOS:【SCI-EXPANDED(收录号:WOS:001350499500001)】；

基金：This work was supported by the National Natural Science Foundation of China (12004110, 12074341) , the Natural Science Foundation of Shanghai, China (No, 23JC1401400) , the Natural Science Foundation of Xinjiang Uygur Autonomous Region (No. 2024D01A158) , and the Fundamental Research Funds for the Central Universities of East China University of Science and Technology. The authors thank the staff members from BL06B beamline of Shanghai Synchrotron Radiation Facility (SSRF) for assistance during data collection.

语种：英文

外文关键词：Graphene oxide; Salt/dye separation; Nanofiltration; Stabilized interlayer spacing; 2D membrane

摘要：Graphene oxide (GO) membranes are considered ideal candidates for efficient water treatment due to their unique two-dimensional structure and excellent sieving properties. However, the swelling of graphene oxide in aqueous solutions makes it still challenging for practical application. Inspired by the spider web, in this work, we developed a "network-trapped engineering" strategy to stabilize the interlayer spacings of GO membranes, which are defined as GS-Sr membranes. The sodium alginate (SA) and Sr2+ were successfully fixed as the "network" and "rivets" in-between the GO nanosheets, respectively. Benefiting from the design of the network structure, the GS- Sr membranes exhibited excellent interlayer spacing stability. Meanwhile, this evenly distributed network structure in the GO laminates can further optimize the stacking of nanosheets, forming more orderly 2D confined nanochannels. As a result, the membranes exhibited superior salt/dye sieving performance, with a separation factor up to 179.13 for Na2SO4/CR, while still maintaining an outstanding water permeance of 70.14 L m- 2 h- 1 bar- 1 . Furthermore, the GS-Sr membrane demonstrated stable separation performance in the long-term test, and the mechanical stability has also been enhanced in the mechanical test. Overall, compared with traditional simple cross-linking strategies, this strategy offers a new insight into fine-construction of two-dimensional nanochannels.