Balancing in-plane pores and interlayer channels of porous MXene nanosheet membranes for scalable hydrogen purification.

ABSTRACT: 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 transf

SUBMITTER: Wang Y 

PROVIDER: S-EPMC12618651 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature