Preparation of Ag<sub>3</sub>PO<sub>4</sub>/TiO<sub>2</sub>(B) Heterojunction Nanobelt with Extended Light Response and Enhanced Photocatalytic Performance
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...
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MDPI AG
2021-11-01
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| Series: | Molecules |
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| Online Access: | https://www.mdpi.com/1420-3049/26/22/6987 |
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| author | Yong Li Yanfang Liu Mingqing Zhang Qianyu Zhou Xin Li Tianlu Chen Shifeng Wang |
| author_facet | Yong Li Yanfang Liu Mingqing Zhang Qianyu Zhou Xin Li Tianlu Chen Shifeng Wang |
| author_sort | Yong Li |
| collection | DOAJ |
| description | 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<sub>2</sub>Ti<sub>3</sub>O<sub>7</sub> nanobelts were prepared via a hydrothermal method and converted to TiO<sub>2</sub>∙xH<sub>2</sub>O ion exchange, which was followed by high-temperature calcination to prepare TiO<sub>2</sub>(B) nanobelts (“B” in TiO<sub>2</sub>(B) means “Bronze phase”). A simple in situ method was used to generate Ag<sub>3</sub>PO<sub>4</sub> particles on the surface of the TiO<sub>2</sub> nanobelts to construct a Ag<sub>3</sub>PO<sub>4</sub>/TiO<sub>2</sub>(B) heterojunction composite photocatalyst. By generating Ag<sub>3</sub>PO<sub>4</sub> nanoparticles on the surface of the TiO<sub>2</sub>(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 Ag<sub>3</sub>PO<sub>4</sub>/TiO<sub>2</sub>(B) heterojunction composite photocatalyst greatly outperformed the TiO<sub>2</sub>(B) nanobelt in terms of photocatalytic degradation. |
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| language | English |
| last_indexed | 2024-03-10T05:13:38Z |
| publishDate | 2021-11-01 |
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| series | Molecules |
| spelling | doaj.art-713f073515e54fe8b80acee3581c366c2023-11-23T00:36:49ZengMDPI AGMolecules1420-30492021-11-012622698710.3390/molecules26226987Preparation of Ag<sub>3</sub>PO<sub>4</sub>/TiO<sub>2</sub>(B) Heterojunction Nanobelt with Extended Light Response and Enhanced Photocatalytic PerformanceYong Li0Yanfang Liu1Mingqing Zhang2Qianyu Zhou3Xin Li4Tianlu Chen5Shifeng Wang6Department of Physics, and Innovation Center of Materials for Energy and Environment Technologies, College of Science, Tibet University, Lhasa 850000, ChinaDepartment of Physics, and Innovation Center of Materials for Energy and Environment Technologies, College of Science, Tibet University, Lhasa 850000, ChinaDepartment of Physics, and Innovation Center of Materials for Energy and Environment Technologies, College of Science, Tibet University, Lhasa 850000, ChinaDepartment of Physics, and Innovation Center of Materials for Energy and Environment Technologies, College of Science, Tibet University, Lhasa 850000, ChinaDepartment of Physics, and Innovation Center of Materials for Energy and Environment Technologies, College of Science, Tibet University, Lhasa 850000, ChinaKey Laboratory of Cosmic Rays (Tibet University), Ministry of Education, Lhasa 850000, ChinaDepartment of Physics, and Innovation Center of Materials for Energy and Environment Technologies, College of Science, Tibet University, Lhasa 850000, ChinaPhotocatalytic 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<sub>2</sub>Ti<sub>3</sub>O<sub>7</sub> nanobelts were prepared via a hydrothermal method and converted to TiO<sub>2</sub>∙xH<sub>2</sub>O ion exchange, which was followed by high-temperature calcination to prepare TiO<sub>2</sub>(B) nanobelts (“B” in TiO<sub>2</sub>(B) means “Bronze phase”). A simple in situ method was used to generate Ag<sub>3</sub>PO<sub>4</sub> particles on the surface of the TiO<sub>2</sub> nanobelts to construct a Ag<sub>3</sub>PO<sub>4</sub>/TiO<sub>2</sub>(B) heterojunction composite photocatalyst. By generating Ag<sub>3</sub>PO<sub>4</sub> nanoparticles on the surface of the TiO<sub>2</sub>(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 Ag<sub>3</sub>PO<sub>4</sub>/TiO<sub>2</sub>(B) heterojunction composite photocatalyst greatly outperformed the TiO<sub>2</sub>(B) nanobelt in terms of photocatalytic degradation.https://www.mdpi.com/1420-3049/26/22/6987photocatalystheterojunctionphotocatalytic degradationTiO<sub>2</sub>(B) nanobelts |
| spellingShingle | Yong Li Yanfang Liu Mingqing Zhang Qianyu Zhou Xin Li Tianlu Chen Shifeng Wang Preparation of Ag<sub>3</sub>PO<sub>4</sub>/TiO<sub>2</sub>(B) Heterojunction Nanobelt with Extended Light Response and Enhanced Photocatalytic Performance Molecules photocatalyst heterojunction photocatalytic degradation TiO<sub>2</sub>(B) nanobelts |
| title | Preparation of Ag<sub>3</sub>PO<sub>4</sub>/TiO<sub>2</sub>(B) Heterojunction Nanobelt with Extended Light Response and Enhanced Photocatalytic Performance |
| title_full | Preparation of Ag<sub>3</sub>PO<sub>4</sub>/TiO<sub>2</sub>(B) Heterojunction Nanobelt with Extended Light Response and Enhanced Photocatalytic Performance |
| title_fullStr | Preparation of Ag<sub>3</sub>PO<sub>4</sub>/TiO<sub>2</sub>(B) Heterojunction Nanobelt with Extended Light Response and Enhanced Photocatalytic Performance |
| title_full_unstemmed | Preparation of Ag<sub>3</sub>PO<sub>4</sub>/TiO<sub>2</sub>(B) Heterojunction Nanobelt with Extended Light Response and Enhanced Photocatalytic Performance |
| title_short | Preparation of Ag<sub>3</sub>PO<sub>4</sub>/TiO<sub>2</sub>(B) Heterojunction Nanobelt with Extended Light Response and Enhanced Photocatalytic Performance |
| title_sort | preparation of ag sub 3 sub po sub 4 sub tio sub 2 sub b heterojunction nanobelt with extended light response and enhanced photocatalytic performance |
| topic | photocatalyst heterojunction photocatalytic degradation TiO<sub>2</sub>(B) nanobelts |
| url | https://www.mdpi.com/1420-3049/26/22/6987 |
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