Enhanced Photocatalytic Activity of BiVO<sub>4</sub>/Bi<sub>2</sub>S<sub>3</sub>/SnS<sub>2</sub> Heterojunction under Visible Light

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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Main Authors: Sopheak Meng, Takaya Ogawa, Hideyuki Okumura, Keiichi N. Ishihara
Format: Article
Language:English
Published: MDPI AG 2020-11-01
Series:Catalysts
Subjects:
BiVO<sub>4</sub>/Bi<sub>2</sub>S<sub>3</sub>/SnS<sub>2</sub> heterojunction
visible light
Z-scheme
Online Access:https://www.mdpi.com/2073-4344/10/11/1294
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spelling doaj-bbb2e2a3c43349ce9244bcb4840256de2020-11-25T04:08:03ZengMDPI AGCatalysts2073-43442020-11-01101294129410.3390/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
collection DOAJ
language English
format Article
sources DOAJ
author Sopheak Meng
Takaya Ogawa
Hideyuki Okumura
Keiichi N. Ishihara
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
author_facet Sopheak Meng
Takaya Ogawa
Hideyuki Okumura
Keiichi N. Ishihara
author_sort Sopheak Meng
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_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_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_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
publisher MDPI AG
series Catalysts
issn 2073-4344
publishDate 2020-11-01
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.
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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AT takayaogawa enhancedphotocatalyticactivityofbivosub4subbisub2subssub3subsnssub2subheterojunctionundervisiblelight
AT hideyukiokumura enhancedphotocatalyticactivityofbivosub4subbisub2subssub3subsnssub2subheterojunctionundervisiblelight
AT keiichinishihara enhancedphotocatalyticactivityofbivosub4subbisub2subssub3subsnssub2subheterojunctionundervisiblelight
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