Journal
RSC ADVANCES
Volume 4, Issue 18, Pages 9139-9147Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3ra46111d
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Funding
- National Nature Science Foundation of China [21177050, 21206060]
- Natural Science Foundation of Jiangsu Province [BK20130513]
- Postdoctoral Foundation of Jiangsu Province [1302167C]
- University Natural Science Research of Jiangsu [13KJB430007]
- Doctoral Innovation Fund of Jiangsu Province [CXLX13-651]
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The AgBr/Ag2CO3 composite was synthesized by an ion-exchange reaction. The physical and chemical properties of the catalysts were characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), energy dispersive spectrometry (EDS), transmission electron microscopy (TEM), diffuse-reflection spectra (DRS) and photocurrent techniques. The photocatalytic performance of the samples was evaluated by photocatalytic oxidation of methylene blue (MB) dye under visible-light irradiation. The XRD, SEM-EDS, TEM, and XPS analyses indicated that the heterojunction structure had been obtained. The results indicated that the AgBr/Ag2CO3 heterojunction had exhibited a much higher photocatalytic activity than the pure Ag2CO3. The enhancement of photocatalytic activity was related to the efficient separation of electron-hole pairs because of the stagger band potentials between AgBr and Ag2CO3.
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