ArticleACS applied materials & interfaces2026
Activation-Controlled Structural Integrity in A520 MOF Membranes for Efficient CO
Article in ACS applied materials & interfaces, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Aluminum fumarate (A520) is a promising metal-organic framework (MOF) for gas adsorption and separation. However, the fabrication of dense, pristine polycrystalline A520 membranes has not yet been reported. Herein, we present a robust seeded-growth protocol to fabricate continuous A520 polycrystalline membranes with a thickness of approximately 3 μm on α-alumina substrates. Our results demonstrate that the post-synthetic activation process plays a critical role in determining membrane integrity. In particular, a methanol exchange (ME) pretreatment prior to thermal activation effectively suppresses lattice distortion induced by capillary stress during solvent evaporation, as evidenced by X-ray diffraction and gas permeation tests. The resulting A520 (ME) membranes exhibit excellent molecular sieving performance, with ideal CO
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