Cascade Promotion of Gas Separation Performances in CMS Membranes: MOFs With Functional Groups and Loaded Noble Metals.

ABSTRACT: The rational design of precursor structure serves as a critical determinant for the pore geometry and gas separation performance of carbon molecular sieve (CMS) membranes. Herein, a novel mixed-matrix CMS (MMCMS) membrane was fabricated via a palladium-doped carboxyl-functionalized UiO-66 (Pd/UiO66-COOH)/polyimide (PI) MMM precursor. On one hand, the decomposition of -COOH groups generates abundant micropores, meanwhile the decarboxylation-induced thermally cross-linking enhances the stability of the carbon framework, thus mitigating the collapse of micropores during carbonization and consequently improving H₂ and CO₂ permeability, as well as membrane stability; on the other hand, the synergistic effect of decarboxylation-induced thermally cross-linking and the cataly

SUBMITTER: Deng M 

PROVIDER: S-EPMC12407267 | biostudies-literature | 2025 Aug

REPOSITORIES: biostudies-literature