文献类型：期刊文献

英文题名：Self-crosslinked MXene hollow fiber membranes for H2/CO2 separation

作者：Qu, Kai[1];Dai, Liheng[1];Xia, Yongsheng[2];Wang, Yixing[1];Zhang, Dezhu[2];Wu, Yulin[1];Yao, Zhizhen[1];Huang, Kang[2];Guo, Xuhong[1];Xu, Zhi[1]

机构：[1]East China Univ Sci & Technol, Sch Chem Engn, State Key Lab Chem Engn, Shanghai 200237, Peoples R China;[2]Nanjing Tech Univ, Coll Chem Engn, Natl Engn Res Ctr Special Separat Membrane, State Key Lab Mat Chem Engn, Nanjing 211816, Peoples R China

年份：2021

卷号：638

外文期刊名：JOURNAL OF MEMBRANE SCIENCE

收录：;EI(收录号：20213210733926);WOS:【SCI-EXPANDED(收录号:WOS:000691537800004)】；

基金：We are grateful for the financial support from the National Natural Science Foundation of China (Grant Nos. 21908054, 21908098 and 22075076), and Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD).

语种：英文

外文关键词：MXene membrane; Self-crosslinking; Hollow fiber; H-2; CO2 separation

摘要：Inorganic hollow fibers are promising substrates for the scaled-up fabrication of two-dimensional (2D) material membranes because of their high packing density and durability under harsh application conditions. However, the inefficient stacking of 2D materials (e.g., MXene nanosheets) on hollow fibers usually leads to oversized interlayer spaces, resulting in low molecular sieving performance. In this study, self-crosslinked MXene hollow fiber membranes were fabricated using a facile thermal treatment process. The self-crosslinking process was documented in detail. An in-situ thermogravimetric analyzer-Fourier transform infrared spectra measurement revealed that the early thermal treatment stage dominated the self-crosslinking process and controlled the regulation of MXene interlayer spacing. The self-crosslinked MXene hollow fiber membranes prepared in this manner exhibited a H-2 permeance of 70.6 GPU and H-2/CO2 selectivity of 30.3, with good operation stability for more than 120 h. This work demonstrates that the self-crosslinking strategy is an efficient approach for improving the size-sieving properties of 2D MXene membranes.