1. Preparation of Ag 3 PO 4 /TiO 2 (B) Heterojunction Nanobelt with Extended Light Response and Enhanced Photocatalytic Performance.
- Author
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Li, Yong, Liu, Yanfang, Zhang, Mingqing, Zhou, Qianyu, Li, Xin, Chen, Tianlu, and Wang, Shifeng
- Subjects
HETEROJUNCTIONS ,SOLAR radiation ,ELECTRON-hole recombination ,PHOTONS ,POWER resources ,PHOTODEGRADATION ,QUANTUM efficiency - Abstract
Photocatalytic degradation, as an emerging method to control environmental pollution, is considered one of the most promising environmental purification technologies. As Tibet is a region with some of the strongest solar radiation in China and even in the world, it is extremely rich in solar energy resources, which is ideal for applying photocatalytic technology to its ecological environment protection and governance. In this study, Na
2 Ti3 O7 nanobelts were prepared via a hydrothermal method and converted to TiO2 ∙xH2 O ion exchange, which was followed by high-temperature calcination to prepare TiO2 (B) nanobelts ("B" in TiO2 (B) means "Bronze phase"). A simple in situ method was used to generate Ag3 PO4 particles on the surface of the TiO2 nanobelts to construct a Ag3 PO4 /TiO2 (B) heterojunction composite photocatalyst. By generating Ag3 PO4 nanoparticles on the surface of the TiO2 (B) nanobelts to construct heterojunctions, the light absorption range of the photocatalyst was successfully extended from UV (ultraviolet) to the visible region. Furthermore, the recombination of photogenerated electron–hole pairs in the catalyst was inhibited by the construction of the heterojunctions, thus greatly enhancing its light quantum efficiency. Therefore, the prepared Ag3 PO4 /TiO2 (B) heterojunction composite photocatalyst greatly outperformed the TiO2 (B) nanobelt in terms of photocatalytic degradation. [ABSTRACT FROM AUTHOR]- Published
- 2021
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