文献类型：期刊文献

英文题名：Balancing in-plane pores and interlayer channels of porous MXene nanosheet membranes for scalable hydrogen purification

作者：Wang, Yufei[1];Shi, Zenan[1];Luo, Mide[1];Zhai, Yeming[2];Jing, Changfei[3];Ding, Li[4];Dai, Sheng[3];Zhou, Kai-Ge[2];Li, Libo[1];Li, Shuming[1];Luo, Jiayu[1];Zhao, Yali[1];Wu, Wufeng[1];Lu, Zong[1];Lan, Lan[2];Li, Wenbo[3];Wei, Yanying[1];Wang, Haihui[4]

机构：[1]South China Univ Technol, Sch Chem & Chem Engn, State Key Lab Pulp & Paper Engn, Guangdong Prov Key Lab Green Chem Prod Technol, Guangzhou, Peoples R China;[2]Tianjin Univ, Inst Mol Plus, Dept Chem, Tianjin, Peoples R China;[3]East China Univ Sci & Technol, Frontiers Sci Ctr Materiobiol & Dynam Chem, Feringa Nobel Prize Scientist Joint Res Ctr, Key Lab Adv Mat & Joint Int Res Lab Precis Chem &, Shanghai, Peoples R China;[4]Tsinghua Univ, Dept Chem Engn, State Key Lab Chem Engn, Beijing, Peoples R China

年份：2025

卷号：16

期号：1

外文期刊名：NATURE COMMUNICATIONS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:001616374600006)】；

基金：Y.Y.W. acknowledges the funding from the National Key Research and Development Program (2021YFB3802500), Natural Science Foundation of China (U23A20115, 22078107, 22022805), Natural Science Foundation of Guangdong Province (2024A1515012724), Guangzhou Municipal Science and Technology Project (2024A04J6251), State Key Laboratory of Pulp and Paper Engineering 2024ZD03, and the Fundamental Research Funds for the Central Universities (2025ZYGXZR023). L.L. acknowledges the funding from the Science and Technology Key Project of Guangdong Province (2025B0101060003) and Natural Science Foundation of Guangdong Province (2024A1515012725). L.D. acknowledges the funding from the National Key Research and Development Program (2023YFB3810700) and Natural Science Foundation of China (22422809).

语种：英文

摘要：Two-dimensional (2D) nanosheet membranes exhibit promising H2 purification due to their atomic thickness. However, the synergistic interplay between in-plane pores and interlayer spacing on gas transport in 2D membrane has never been studied. Here, we engineer porous MXene nanosheets with artificially controllable in-plane pore to construct membranes with precise interlayer spacing, balancing the two types of channels for promising H2/CO2 separation. Optimal porous-MXene nanosheet membranes achieve a threefold increase in H2 permeance (1335 GPU) over nonporous-MXene nanosheet membranes (419 GPU) with comparable H2/CO2 selectivity (118). Theory and experiment demonstrate that the larger in-plane pores provide fast mass transfer channels enhancing H2 permeance, while smaller interlayer spacings as effective sieving channels govern selectivity. The Raman mapping visualizes H2 transport through in-plane pores. Manufacturing of meter-scale membranes underscores industrial viability. This work establishes universal design principles in high-performance 2D nanosheet membranes for separation, adsorption and catalysis.