1. Facile synthesis of a novel visible-light-driven AgVO3/BiVO4 heterojunction photocatalyst and mechanism insight.
- Author
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Wang, Rong and Cao, Ling
- Subjects
- *
BISMUTH compounds , *SILVER compounds , *HETEROJUNCTIONS , *IRRADIATION , *RHODAMINE B , *PHOTONIC band gap structures , *SEMICONDUCTORS - Abstract
In this study, the successful construction of a novel AgVO 3 /BiVO 4 heterojunction photocatalyst via a facile two-step method was reported. The organic dye Rhodamine B (RhB) was chosen as a simulative pollutant to investigate the photocatalytic performances of the samples. The results showed that the AgVO 3 /BiVO 4 heterojunction possessed remarkably enhanced photocatalytic activity under visible-light irradiation compared with individual components. The AgVO 3 /BiVO 4 heterojunction possessed the highest rate constant, which was about 17.2 and 3.1 times higher than those of pure BiVO 4 and AgVO 3 , respectively. Such an enhancement was mainly ascribed to the formation of suitable heterojunction structure with intimate interfacial contact between AgVO 3 and BiVO 4 , resulting in the effective separation of photogenerated electron-hole pairs. The possible photocatalytic mechanism was also proposed based on the trapping experiments of active species, indicating that h + and OH played a key role in the photocatalytic degradation process. [ABSTRACT FROM AUTHOR]
- Published
- 2017
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