期刊
APPLIED SURFACE SCIENCE
卷 535, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.apsusc.2020.147682
关键词
WO3; CdIn2S4; Photodegradation; Step-scheme
类别
资金
- National Training Program of Innovation and Entrepreneurship for Undergraduates
- Anhui Provincial Natural Science Foundation [1908085MB32]
- Science and Technology Project of Taizhou City [1902gy19]
- Zhejiang Provincial Natural Science Foundation [LQ19E020001]
- Key Research and Development Projects of Zhejiang Province [2020C04004]
The research successfully prepared visible-light-driven WO3/CdIn2S4 hybrid photocatalysts with excellent performance in degrading antibiotic contaminants, with the 70 wt% WO3/CdIn2S4 hybrid photocatalyst showing the best photodegradation activity. This enhancement is attributed to effective charge separation within the hybrid photocatalysts.
Photocatalytic degradation is an ideal choice for the treatment of antibiotic contaminant in water environment because of the characters of environmental-benign and sustainable. In this work, the visible-light-driven WO3/CdIn2S4 hybrid photocatalysts with different WO3 content were successfully fabricated by hydrothermal method. The phase structure, surface composition, optical properties, specific surface areas and charge separation were systematically by a series of measurements. The photocatalytic activity of resultant WO3/CdIn2S4 hybrid photocatalysts was evaluated by photocatalytic degradation for removal of tetracycline hydrochloride (TCH) and the results reveal that optimized photocatalytic efficiency in WO3/CdIn(2)S(4)hybrid photocatalysts can be achieved by modulating the weight ratio of WO3/CdIn2S4. The 70 wt% WO3/CdIn2S4 hybrid photocatalyst exhibited the best photodegradation activity. Significant enhancement of photocatalytic activity in WO3/CdIn2S4 hybrid photocatalysts is ascribed to effective charge separation due to the construction of step-scheme heterojunction. The photocatalytic mechanism involving charge transfer and separation, and degradation path using stepscheme WO3/CdIn2S4 hybrid photocatalysts were in-depth investigated and discussed. It is anticipated that our current investigation could open an avenue for design and preparation of step-scheme hybrid photocatalysts for environmental remediation.
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