Authors
Ying Zhao, Dongmei Chen, Huilin Zheng, Min Chen, Dingtang Li, Shuyu Xie
Published in
Advanced science (Weinheim, Baden-Wurttemberg, Germany). Pages e76204. Jun 18, 2026. Epub Jun 18, 2026.
Abstract
Hierarchical composites composed of covalent-organic frameworks (COFs) and metal-organic frameworks (MOFs) (COF@MOF), exhibiting superior tunability in terms of pore structure and electronic distribution, have gained increasing attention in various fields. However, the development of a universal strategy for controllable assembly of COF@MOF composites, enabling precise tuning of composition and structure, remains a significant challenge. Here, a flexible and adjustable COF@MOF synthesis strategy (metal pre‑fixation, MPF) is proposed, which facilitates the extensive growth of MOFs with varying morphologies and particle sizes on the surface of PY-COF-COOH. By employing a hypothesis-deduction approach alongside experimental and density functional theory (DFT) calculations, systematically elucidated that the MPF strategy enables controllable modulation of morphology, size, and coordination structure through ion distribution-guided synthesis (IDGS), a proposed working hypothesis of crystal-facet shielding (CFS), and aperture synergistic regulation (ASR) effects. Furthermore, the MPF-derived PY-COF-COOH@MOFs exhibit significantly enhanced CH4/C2H6/C3H8 separation performance and sustained H2O2 activation efficiency. These results demonstrate significant potential in designing high-performance COF@MOF composites and offer a comprehensive application guide for MPF-based design.
PMID:
42312389
Bibliographic data and abstract were imported from PubMed on 18 Jun 2026.
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