期刊
JOURNAL OF INORGANIC AND ORGANOMETALLIC POLYMERS AND MATERIALS
卷 26, 期 1, 页码 91-99出版社
SPRINGER
DOI: 10.1007/s10904-015-0279-1
关键词
BiOCl; g-C3N4; Hybrid photocatalyst; Heterojunction
资金
- National Nature Science Foundation of China [21276036]
- National Key Technology Support Program [2014BAB12B06]
- Program for Liaoning Excellent Talents in University
- Fundamental Research Funds for the Central Universities [3132014323, 3132015085]
A g-C3N4/bismuth oxychloride (BiOCl) heterojunction was prepared by ultrasonic method. The microstructure, morphology, properties, and photocatalytic activity of the heterojunction were characterized using X-ray diffraction, UV-Vis diffuse reflection spectroscopy, field emission scanning electron microscopy, Fourier transform infrared spectroscopy (FT-IR), transmission electron microscopy and electro-chemical experiments. After hybridized with g-C3N4, the absorption edge of g-C3N4/BiOCl showed a red shift that reached 440 nm, with a band gap (E (g)) calculated to be 2.82 eV. Under visible-light irradiation, the hybrid photocatalyst also showed activity for methylene-blue photodegradation that was approximately 6.3 times higher than the activity of pure BiOCl. The mechanism of photocatalytic activity enhancement involved increased separation of electrons and holes between g-C3N4 and BiOCl. This work significantly contributed to the improvement in photocatalytic activity of BiOCl.
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