期刊
ACS APPLIED MATERIALS & INTERFACES
卷 13, 期 47, 页码 56171-56180出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.1c16612
关键词
hollow morphology; BiOBr@Bi-MOF; heterostructure; solubility product; photocatalytic degradation
资金
- National Natural Science Foundation of China (NSFC) [51632003, 22071081, 21601063]
- China Postdoctoral Science Foundation [2021M692963]
- Taishan Scholars Program
- Case-byCase Project for Top Outstanding Talents of Jinan
- Opening Project of Key Laboratory of Inorganic Functional Materials and Devices, Chinese Academy of Sciences [KLIFMD202007]
This research successfully fabricated a novel 3D hollow BiOBr@Bi-MOF microsphere structure through controlled dissociation kinetics, increasing the photocatalytic degradation efficiency of RhB.
Considering the flexibility, adjustable pore structure, and abundant active sites of metal-organic frameworks (MOFs), rational design and fine control of the MOF-based hetero-nanocrystals is a highly important and challenging subject. In this work, self-assembly of a 3D hollow BiOBr@Bi-MOF microsphere was fabricated through precisely controlled dissociation kinetics of the self-sacrificial template (BiOBr) for the first time, where the residual quantity of BiOBr and the formation of Bi-MOF were carefully regulated by changing the reaction time and the capability of coordination. Meanwhile, the hollow microstructure was formed in BiOBr@Bi-MOF through the Oswald ripening mechanism to separate photogenerated electron-hole pairs and increase the adsorption capacity of Bi-MOF for dyes, which significantly enhanced the photocatalytic degradation efficiency of RhB from 56.4% for BiOBr to 99.4% for the optimal BiOBr@Bi-MOF microsphere. This research broadens the selectivity of semiconductor/MOF hetero-nanocrystals with reasonable design and flexible synthesis.
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