Insight into the Z-scheme heterostructure WO3/g-C3N4 for enhanced photocatalytic degradation of methyl orange

•WO3/g-C3N4 was prepared by dispersing WO3 nanosheets on g-C3N4 nanosheets.•The O2− played key role in the photocatalytic oxidation process were clearly identified.•The concentration of O2− quantificationally determined by NBT probing method. WO3 nanosheets and its hybridized nanocomposite, WO3/g-C3...

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Bibliographic Details
Published in:Materials letters 2019-02, Vol.236, p.596-599
Main Authors: Chen, Guochang, Bian, Shicong, Guo, Cun-Yue, Wu, Xingrong
Format: Article
Language:English
Subjects:
Nanocomposites
Photocatalysis
Semiconductors
WO3/g-C3N4
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Summary:•WO3/g-C3N4 was prepared by dispersing WO3 nanosheets on g-C3N4 nanosheets.•The O2− played key role in the photocatalytic oxidation process were clearly identified.•The concentration of O2− quantificationally determined by NBT probing method. WO3 nanosheets and its hybridized nanocomposite, WO3/g-C3N4, were prepared by a simple direct precipitation method. The as-prepared WO3/g-C3N4 showed enhanced photocatalytic activity toward degrading methyl orange (MO). The O2−, which played key role in the photocatalytic oxidation process, were clearly identified and quantificationally determined by the trapping experiment and nitroblue tetrazolium (NBT) probing method. Z-scheme photocatalytic mechanism was proposed accordingly.
ISSN:0167-577X
1873-4979
DOI:10.1016/j.matlet.2018.11.010