期刊
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
卷 15, 期 44, 页码 19387-19394出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3cp53628a
关键词
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资金
- National Basic Research Program of China [2013CB934800, 2011CB606401]
- National Natural Science Foundation of China [11004068, 51101064]
- Fundamental Research Funds for the Central Universities, HUST [2012TS012, 2012TS076]
- China Postdoctoral Science Foundation [2012M521421]
- New Century Excellent Talents in University (NCET)
A BiOCl-Bi-2 WO6 heterojunction with a chemically bonded interface was synthesized via a facile onestep solvothermal method. A series of characterization techniques (XRD, XPS, TEM, SEM, EDS etc.) confirmed the existence of a BiOCl-Bi-2 WO6 interface. The heterojunction yielded a higher photodegradation rate of Rhodamine B under visible light irradiation compared to its individual components. Theoretical studies based on density functional theory calculations indicated that the enhanced photosensitized degradation activity could be attributed to the favorable band offsets across the BiI-O-BiII bonded interface, leading to efficient interfacial charge carrier transfer. Our results reveal the photosensitized mechanism of BiOCl-Bi2WO6 heterojunctions and demonstrate their practical use as visible-light-driven photocatalytic materials.
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