Construction of Hollow Co<sub>3</sub>O<sub>4</sub>@ZnIn<sub>2</sub>S<sub>4</sub> p-n Heterojunctions for Highly Efficient Photocatalytic Hydrogen Production
Photocatalysts derived from semiconductor heterojunctions for water splitting have bright prospects in solar energy conversion. Here, a Co<sub>3</sub>O<sub>4</sub>@ZIS p-n heterojunction was successfully created by developing two-dimensional ZnIn<sub>2</sub>S<s...
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MDPI AG
2023-02-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/13/4/758 |
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| author | Zijian Xin Haizhao Zheng Juncheng Hu |
| author_facet | Zijian Xin Haizhao Zheng Juncheng Hu |
| author_sort | Zijian Xin |
| collection | DOAJ |
| description | Photocatalysts derived from semiconductor heterojunctions for water splitting have bright prospects in solar energy conversion. Here, a Co<sub>3</sub>O<sub>4</sub>@ZIS p-n heterojunction was successfully created by developing two-dimensional ZnIn<sub>2</sub>S<sub>4</sub> on ZIF-67-derived hollow Co<sub>3</sub>O<sub>4</sub> nanocages, realizing efficient spatial separation of the electron-hole pair. Moreover, the black hollow structure of Co<sub>3</sub>O<sub>4</sub> considerably increases the range of light absorption and the light utilization efficiency of the heterojunction avoids the agglomeration of ZnIn<sub>2</sub>S<sub>4</sub> nanosheets and further improves the hydrogen generation rate of the material. The obtained Co<sub>3</sub>O<sub>4</sub>(20) @ZIS showed excellent photocatalytic H<sub>2</sub> activity of 5.38 mmol g<sup>−1</sup>·h<sup>−1</sup> under simulated solar light, which was seven times more than that of pure ZnIn<sub>2</sub>S<sub>4</sub>. Therefore, these kinds of constructions of hollow p-n heterojunctions have a positive prospect in solar energy conversion fields. |
| first_indexed | 2024-03-11T08:20:25Z |
| format | Article |
| id | doaj.art-f897036ca6a647f798260770f3136759 |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-11T08:20:25Z |
| publishDate | 2023-02-01 |
| publisher | MDPI AG |
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| series | Nanomaterials |
| spelling | doaj.art-f897036ca6a647f798260770f31367592023-11-16T22:28:29ZengMDPI AGNanomaterials2079-49912023-02-0113475810.3390/nano13040758Construction of Hollow Co<sub>3</sub>O<sub>4</sub>@ZnIn<sub>2</sub>S<sub>4</sub> p-n Heterojunctions for Highly Efficient Photocatalytic Hydrogen ProductionZijian Xin0Haizhao Zheng1Juncheng Hu2Hubei Key Laboratory of Catalysis and Materials Science, School of Chemistry and Materials Science, South-Central Minzu University, Wuhan 430074, ChinaHubei Key Laboratory of Catalysis and Materials Science, School of Chemistry and Materials Science, South-Central Minzu University, Wuhan 430074, ChinaHubei Key Laboratory of Catalysis and Materials Science, School of Chemistry and Materials Science, South-Central Minzu University, Wuhan 430074, ChinaPhotocatalysts derived from semiconductor heterojunctions for water splitting have bright prospects in solar energy conversion. Here, a Co<sub>3</sub>O<sub>4</sub>@ZIS p-n heterojunction was successfully created by developing two-dimensional ZnIn<sub>2</sub>S<sub>4</sub> on ZIF-67-derived hollow Co<sub>3</sub>O<sub>4</sub> nanocages, realizing efficient spatial separation of the electron-hole pair. Moreover, the black hollow structure of Co<sub>3</sub>O<sub>4</sub> considerably increases the range of light absorption and the light utilization efficiency of the heterojunction avoids the agglomeration of ZnIn<sub>2</sub>S<sub>4</sub> nanosheets and further improves the hydrogen generation rate of the material. The obtained Co<sub>3</sub>O<sub>4</sub>(20) @ZIS showed excellent photocatalytic H<sub>2</sub> activity of 5.38 mmol g<sup>−1</sup>·h<sup>−1</sup> under simulated solar light, which was seven times more than that of pure ZnIn<sub>2</sub>S<sub>4</sub>. Therefore, these kinds of constructions of hollow p-n heterojunctions have a positive prospect in solar energy conversion fields.https://www.mdpi.com/2079-4991/13/4/758ZIF-67hollow Co<sub>3</sub>O<sub>4</sub> nanocagesZnIn<sub>2</sub>S<sub>4</sub> nanosheetsp-n heterojunctionphotocatalytic hydrogen productionvisible light |
| spellingShingle | Zijian Xin Haizhao Zheng Juncheng Hu Construction of Hollow Co<sub>3</sub>O<sub>4</sub>@ZnIn<sub>2</sub>S<sub>4</sub> p-n Heterojunctions for Highly Efficient Photocatalytic Hydrogen Production Nanomaterials ZIF-67 hollow Co<sub>3</sub>O<sub>4</sub> nanocages ZnIn<sub>2</sub>S<sub>4</sub> nanosheets p-n heterojunction photocatalytic hydrogen production visible light |
| title | Construction of Hollow Co<sub>3</sub>O<sub>4</sub>@ZnIn<sub>2</sub>S<sub>4</sub> p-n Heterojunctions for Highly Efficient Photocatalytic Hydrogen Production |
| title_full | Construction of Hollow Co<sub>3</sub>O<sub>4</sub>@ZnIn<sub>2</sub>S<sub>4</sub> p-n Heterojunctions for Highly Efficient Photocatalytic Hydrogen Production |
| title_fullStr | Construction of Hollow Co<sub>3</sub>O<sub>4</sub>@ZnIn<sub>2</sub>S<sub>4</sub> p-n Heterojunctions for Highly Efficient Photocatalytic Hydrogen Production |
| title_full_unstemmed | Construction of Hollow Co<sub>3</sub>O<sub>4</sub>@ZnIn<sub>2</sub>S<sub>4</sub> p-n Heterojunctions for Highly Efficient Photocatalytic Hydrogen Production |
| title_short | Construction of Hollow Co<sub>3</sub>O<sub>4</sub>@ZnIn<sub>2</sub>S<sub>4</sub> p-n Heterojunctions for Highly Efficient Photocatalytic Hydrogen Production |
| title_sort | construction of hollow co sub 3 sub o sub 4 sub znin sub 2 sub s sub 4 sub p n heterojunctions for highly efficient photocatalytic hydrogen production |
| topic | ZIF-67 hollow Co<sub>3</sub>O<sub>4</sub> nanocages ZnIn<sub>2</sub>S<sub>4</sub> nanosheets p-n heterojunction photocatalytic hydrogen production visible light |
| url | https://www.mdpi.com/2079-4991/13/4/758 |
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