期刊
SEMICONDUCTOR SCIENCE AND TECHNOLOGY
卷 32, 期 6, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/1361-6641/aa67c0
关键词
TiO2; Bi2WO6; photocatalytic; visible-light irradiation
类别
资金
- National Natural Science Foundation of China [21171053]
- Natural Science Foundation of Hubei Province, China [2014CFA131]
- Graduate Student Innovation Research Fund of Hubei Normal University [20160108]
TiO2 nanoparticles modified Bi2WO6 photocatalysts were prepared via a facile hydrothermal process. The photocatalytic activity of as-prepared TiO2/Bi2WO6 composites was investigated sufficiently by the photodegradation of rhodamine B (RhB), tetracycline hydrochloride (TC) and ciprofloxacin (CIP). The TiO2/Bi2WO6 composites, in which the molar ratio of TiO2 to Bi2WO6 is 1:1, exhibited optimum photocatalytic activity, which is found to increase by about 2.4 times more than that of pristine Bi2WO6 for the photodegradation of TC. The enhanced photocatalytic activity may be attributed to the higher surface area and the highly efficient charge separation between Bi2WO6 nanosheets and TiO2 nanoparticles. The mechanism of the photocatalysts is investigated by the determination of reactive species in the photocatalytic reactions, the photoluminescence measurement and photoelectrochemical analyses.
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