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...
Ausführliche Beschreibung
Autor*in: |
Sopheak Meng [verfasserIn] Takaya Ogawa [verfasserIn] Hideyuki Okumura [verfasserIn] Keiichi N. Ishihara [verfasserIn] |
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Format: |
E-Artikel |
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Sprache: |
Englisch |
Erschienen: |
2020 |
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Übergeordnetes Werk: |
In: Catalysts - MDPI AG, 2012, 10(2020), 11, p 1294 |
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Übergeordnetes Werk: |
volume:10 ; year:2020 ; number:11, p 1294 |
Links: |
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DOI / URN: |
10.3390/catal10111294 |
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Katalog-ID: |
DOAJ076084159 |
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Enhanced Photocatalytic Activity of BiVO<sub<4</sub</Bi<sub<2</sub<S<sub<3</sub</SnS<sub<2</sub< Heterojunction under Visible Light |
abstract |
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. |
abstractGer |
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. |
abstract_unstemmed |
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. |
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Enhanced Photocatalytic Activity of BiVO<sub<4</sub</Bi<sub<2</sub<S<sub<3</sub</SnS<sub<2</sub< Heterojunction under Visible Light |
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https://doi.org/10.3390/catal10111294 https://doaj.org/article/bbb2e2a3c43349ce9244bcb4840256de https://www.mdpi.com/2073-4344/10/11/1294 https://doaj.org/toc/2073-4344 |
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