Journal
SMALL METHODS
Volume 6, Issue 7, Pages -Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/smtd.202200265
Keywords
confinement syntheses; covalent organic frameworks; metal-organic frameworks; photocatalytic degradation; z-scheme
Funding
- National Natural Science Foundation of China [21705117]
- Elite Scholar Program of Tianjin University [2019XRG-0065]
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A novel COF@MOF micro/nanopore network is constructed by confining metal-organic framework (MOF) in the 1D channel of the 2D covalent organic framework (COF). The hierarchical porous structure endows the material with superior adsorption capacity and the integration of COF and MOF forms a Z-scheme photocatalytic system, significantly improving the photocatalytic activity.
The search for building hierarchical porous materials with accelerated photo-induced electrons and charge-carrier separation is important because they hold great promise for applications in various fields. Here, a facile strategy of confining metal-organic framework (MOF) in the 1D channel of the 2D covalent organic framework (COF) to construct a novel COF@MOF micro/nanopore network is proposed. Specifically, a nitrogen-riched COF (TTA-BPDA-COF) is chosen as the platform for in-situ growth of a Co-based MOF (ZIF-L-Co) to form a TTA-BPDA-COF@ZIF-L-Co hybrid material. The hierarchical porous structure endows TTA-BPDA-COF@ZIF-L-Co with superior adsorption capacity. In addition, the integration of TTA-BPDA-COF and ZIF-L-Co forms a Z-scheme photocatalytic system, which significantly improved the redox properties and accelerated the separation of photogenerated charges and holes, achieving great improvement in photocatalytic activity. This confinement engineering strategy provides a new idea to construct a versatile molecular-material photocatalytic platform.
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