Enhanced Photocatalytic Activity of BiVO<sub>4</sub>/Bi<sub>2</sub>S<sub>3</sub>/SnS<sub>2</sub> Heterojunction under Visible Light
Heterojunction photocatalysts have attracted a significant amount of attention due to their advantages over a single photocatalyst and, particularly, their superior spatial charge separation. Herein, the BiVO<sub>4</sub>/Bi<sub>2</sub>S<sub>3</sub>/SnS<sub>2...
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MDPI AG
2020-11-01
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| Online Access: | https://www.mdpi.com/2073-4344/10/11/1294 |
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| author | Sopheak Meng Takaya Ogawa Hideyuki Okumura Keiichi N. Ishihara |
| author_facet | Sopheak Meng Takaya Ogawa Hideyuki Okumura Keiichi N. Ishihara |
| author_sort | Sopheak Meng |
| collection | DOAJ |
| description | Heterojunction photocatalysts have attracted a significant amount of attention due to their advantages over a single photocatalyst and, particularly, their superior spatial charge separation. Herein, the BiVO<sub>4</sub>/Bi<sub>2</sub>S<sub>3</sub>/SnS<sub>2</sub> heterojunction was synthesized via solvothermal synthesis with different ratios of BiVO<sub>4</sub> to SnS<sub>2</sub>. The photodegradation rate of the 0.03 BiVO<sub>4</sub>/SnS<sub>2</sub> sample for rhodamine B removal is 2.3 times or 2.9 times greater than that of a single SnS<sub>2</sub> or BiVO<sub>4</sub>, respectively. The chemical bond between photocatalysts is confirmed by X-ray photoelectron spectroscopy (XPS), and the synchronized shift observed in binding energies strongly indicates the electron screening effect at the heterojunction. A Z-scheme model is proposed to explain charge transfer pathway in the system, in which the formation of Bi<sub>2</sub>S<sub>3</sub> plays a crucial role in the enhanced photocatalytic performance of the heterojunction. |
| first_indexed | 2024-03-10T15:00:07Z |
| format | Article |
| id | doaj.art-bbb2e2a3c43349ce9244bcb4840256de |
| institution | Directory Open Access Journal |
| issn | 2073-4344 |
| language | English |
| last_indexed | 2024-03-10T15:00:07Z |
| publishDate | 2020-11-01 |
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| record_format | Article |
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| spelling | doaj.art-bbb2e2a3c43349ce9244bcb4840256de2023-11-20T20:15:44ZengMDPI AGCatalysts2073-43442020-11-011011129410.3390/catal10111294Enhanced Photocatalytic Activity of BiVO<sub>4</sub>/Bi<sub>2</sub>S<sub>3</sub>/SnS<sub>2</sub> Heterojunction under Visible LightSopheak Meng0Takaya Ogawa1Hideyuki Okumura2Keiichi N. Ishihara3Graduate School of Energy Science, Kyoto University, Kyoto 606-8501, JapanGraduate School of Energy Science, Kyoto University, Kyoto 606-8501, JapanGraduate School of Energy Science, Kyoto University, Kyoto 606-8501, JapanGraduate School of Energy Science, Kyoto University, Kyoto 606-8501, JapanHeterojunction photocatalysts have attracted a significant amount of attention due to their advantages over a single photocatalyst and, particularly, their superior spatial charge separation. Herein, the BiVO<sub>4</sub>/Bi<sub>2</sub>S<sub>3</sub>/SnS<sub>2</sub> heterojunction was synthesized via solvothermal synthesis with different ratios of BiVO<sub>4</sub> to SnS<sub>2</sub>. The photodegradation rate of the 0.03 BiVO<sub>4</sub>/SnS<sub>2</sub> sample for rhodamine B removal is 2.3 times or 2.9 times greater than that of a single SnS<sub>2</sub> or BiVO<sub>4</sub>, respectively. The chemical bond between photocatalysts is confirmed by X-ray photoelectron spectroscopy (XPS), and the synchronized shift observed in binding energies strongly indicates the electron screening effect at the heterojunction. A Z-scheme model is proposed to explain charge transfer pathway in the system, in which the formation of Bi<sub>2</sub>S<sub>3</sub> plays a crucial role in the enhanced photocatalytic performance of the heterojunction.https://www.mdpi.com/2073-4344/10/11/1294BiVO<sub>4</sub>/Bi<sub>2</sub>S<sub>3</sub>/SnS<sub>2</sub> heterojunctionvisible lightZ-scheme |
| spellingShingle | Sopheak Meng Takaya Ogawa Hideyuki Okumura Keiichi N. Ishihara Enhanced Photocatalytic Activity of BiVO<sub>4</sub>/Bi<sub>2</sub>S<sub>3</sub>/SnS<sub>2</sub> Heterojunction under Visible Light Catalysts BiVO<sub>4</sub>/Bi<sub>2</sub>S<sub>3</sub>/SnS<sub>2</sub> heterojunction visible light Z-scheme |
| title | Enhanced Photocatalytic Activity of BiVO<sub>4</sub>/Bi<sub>2</sub>S<sub>3</sub>/SnS<sub>2</sub> Heterojunction under Visible Light |
| title_full | Enhanced Photocatalytic Activity of BiVO<sub>4</sub>/Bi<sub>2</sub>S<sub>3</sub>/SnS<sub>2</sub> Heterojunction under Visible Light |
| title_fullStr | Enhanced Photocatalytic Activity of BiVO<sub>4</sub>/Bi<sub>2</sub>S<sub>3</sub>/SnS<sub>2</sub> Heterojunction under Visible Light |
| title_full_unstemmed | Enhanced Photocatalytic Activity of BiVO<sub>4</sub>/Bi<sub>2</sub>S<sub>3</sub>/SnS<sub>2</sub> Heterojunction under Visible Light |
| title_short | Enhanced Photocatalytic Activity of BiVO<sub>4</sub>/Bi<sub>2</sub>S<sub>3</sub>/SnS<sub>2</sub> Heterojunction under Visible Light |
| title_sort | enhanced photocatalytic activity of bivo sub 4 sub bi sub 2 sub s sub 3 sub sns sub 2 sub heterojunction under visible light |
| topic | BiVO<sub>4</sub>/Bi<sub>2</sub>S<sub>3</sub>/SnS<sub>2</sub> heterojunction visible light Z-scheme |
| url | https://www.mdpi.com/2073-4344/10/11/1294 |
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