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Abstract:
AgBr/BiVO(4)photocatalysts with heterojunction structures were prepared using a hydrothermal method. To analyse phase composition and microstructure, samples were characterised by X-ray diffraction and scanning electron microscopy, respectively. Photoluminescence measurements were used to characterise the recombination rate of photogenerated electron-hole pairs. The phase structure, chemical state and optical properties of heterojunctions were analysed by UV-visible diffuse-reflectance spectrometry. AgBr/BiVO(4)showed high efficiency for the degradation of rhodamine B under visible light irradiation. Hydrothermal temperature and pH values exhibited significant influence on band gap energy and the recombination rate of electron-hole pairs of AgBr/BiVO4, reflective of photocatalytic properties. Results show that at 160 degrees C and pH of 7 AgBr/BiVO(4)achieved the best photocatalytic activity, for which the visible light-absorption range of the AgBr/BiVO(4)heterojunction was significantly enhanced. Photodegradation catalysis of RhB was most efficiently achieved at a level of approximately 56.72% for a reaction time of 140 min.
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Source :
MATERIALS TECHNOLOGY
ISSN: 1066-7857
Year: 2020
Issue: 2
Volume: 37
Page: 104-111
3 . 1 0 0
JCR@2022
ESI Discipline: MATERIALS SCIENCE;
ESI HC Threshold:169
Cited Count:
WoS CC Cited Count: 5
SCOPUS Cited Count: 2
ESI Highly Cited Papers on the List: 0 Unfold All
WanFang Cited Count:
Chinese Cited Count:
30 Days PV: 19
Affiliated Colleges: