期刊
DALTON TRANSACTIONS
卷 47, 期 3, 页码 684-692出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7dt03256k
关键词
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资金
- National Natural Science Foundation of China [51472162, 51672177, 21503081, 21707093]
- Shanghai Alliance Project [LM201321, LM201655]
Visible-light-driven organic transformations have received much attention because of their low cost, relative safety, and environmental friendliness. In this work, we report a series of Bi2S3@ZIF-8 core-shell heterostructures prepared using a simple and efficient self-assembly process. The photocatalytic activity was evaluated using the photocatalytic degradation of Rhodamine B (RhB) under visible-light irradiation and the results show that the core-shell Bi2S3@ZIF-8 heterostructure can remarkably enhance the photocatalytic efficiency at room temperature compared to pristine Bi2S3 nanorods. In addition, the Bi2S3@ZIF-8 composite with a Bi/Zn molar ratio of 1/10 demonstrates good structural stability after the degradation experiment and its photocatalytic activity remains at about 95% after the five recycling tests. The improved photocatalytic performance can be attributed to the larger specific surface area, increased light absorption, and more efficient separation of photogenerated electron-hole pairs due to the combined effects of Bi2S3 and ZIF-8. Moreover, the synergistic photocatalysis mechanism was investigated.
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