In Situ Fabrication of CdS/Cd(OH)<sub>2</sub> for Effective Visible Light-Driven Photocatalysis
Photocatalytic hydrogen production is a promising technology that can generate renewable energy. However, light absorption and fast electron transfer are two main challenges that restrict the practical application of photocatalysis. Moreover, most of the composite photocatalysts that possess better...
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MDPI AG
2023-08-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/13/17/2453 |
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| author | Ran Chen Liping Qian Shengyou Xu Shunli Wan Minghai Ma Lei Zhang Runren Jiang |
| author_facet | Ran Chen Liping Qian Shengyou Xu Shunli Wan Minghai Ma Lei Zhang Runren Jiang |
| author_sort | Ran Chen |
| collection | DOAJ |
| description | Photocatalytic hydrogen production is a promising technology that can generate renewable energy. However, light absorption and fast electron transfer are two main challenges that restrict the practical application of photocatalysis. Moreover, most of the composite photocatalysts that possess better photocatalytic performance are fabricated by various methods, many of which are complicated and in which, the key conditions are hard to control. Herein, we developed a simple method to prepare CdS/Cd(OH)<sub>2</sub> samples via an in situ synthesis approach during the photocatalytic reaction process. The optimal hydrogen generation rate of CdS/Cd(OH)<sub>2</sub> that could be obtained was 15.2 mmol·h<sup>−1</sup>·g<sup>−1</sup>, greater than that of CdS, which generates 2.6 mmol·h<sup>−1</sup>·g<sup>−1</sup> under visible light irradiation. Meanwhile, the CdS-3 sample shows superior HER performance during recycling tests and exhibits relatively steady photocatalytic performance in the 10 h experiment. Expanded absorption of visible light, decreased recombination possibility for photo-induced carriers and a more negative conduction band position are mainly responsible for the enhanced photocatalytic hydrogen evolution performance. Photo-induced electrons will be motivated to the conduction band of CdS under the irradiation of visible light and will further transfer to Cd(OH)<sub>2</sub> to react with H<sup>+</sup> to produce H<sub>2</sub>. The in situ-formed Cd(OH)<sub>2</sub> could effectively facilitate the electron transfer and reduce the recombination possibility of photo-generated electron-hole pairs. |
| first_indexed | 2024-03-10T23:16:35Z |
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| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-10T23:16:35Z |
| publishDate | 2023-08-01 |
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| series | Nanomaterials |
| spelling | doaj.art-9caf4a7b0968426c88d30e43f0e02ce02023-11-19T08:36:53ZengMDPI AGNanomaterials2079-49912023-08-011317245310.3390/nano13172453In Situ Fabrication of CdS/Cd(OH)<sub>2</sub> for Effective Visible Light-Driven PhotocatalysisRan Chen0Liping Qian1Shengyou Xu2Shunli Wan3Minghai Ma4Lei Zhang5Runren Jiang6Key Laboratory of Environmental Detection and Pollution Prevention, College of Life & Environmental Sciences, Huangshan University, Huangshan 245041, ChinaKey Laboratory of Environmental Detection and Pollution Prevention, College of Life & Environmental Sciences, Huangshan University, Huangshan 245041, ChinaKey Laboratory of Environmental Detection and Pollution Prevention, College of Life & Environmental Sciences, Huangshan University, Huangshan 245041, ChinaKey Laboratory of Environmental Detection and Pollution Prevention, College of Life & Environmental Sciences, Huangshan University, Huangshan 245041, ChinaKey Laboratory of Environmental Detection and Pollution Prevention, College of Life & Environmental Sciences, Huangshan University, Huangshan 245041, ChinaSchool of Environmental Science and Engineering, Yancheng Institute of Technology, Yancheng 224051, ChinaKey Laboratory of Integrated Regulation and Resource Development on Shallow Lakes, Ministry of Education, College of Environment, Hohai University, Nanjing 210098, ChinaPhotocatalytic hydrogen production is a promising technology that can generate renewable energy. However, light absorption and fast electron transfer are two main challenges that restrict the practical application of photocatalysis. Moreover, most of the composite photocatalysts that possess better photocatalytic performance are fabricated by various methods, many of which are complicated and in which, the key conditions are hard to control. Herein, we developed a simple method to prepare CdS/Cd(OH)<sub>2</sub> samples via an in situ synthesis approach during the photocatalytic reaction process. The optimal hydrogen generation rate of CdS/Cd(OH)<sub>2</sub> that could be obtained was 15.2 mmol·h<sup>−1</sup>·g<sup>−1</sup>, greater than that of CdS, which generates 2.6 mmol·h<sup>−1</sup>·g<sup>−1</sup> under visible light irradiation. Meanwhile, the CdS-3 sample shows superior HER performance during recycling tests and exhibits relatively steady photocatalytic performance in the 10 h experiment. Expanded absorption of visible light, decreased recombination possibility for photo-induced carriers and a more negative conduction band position are mainly responsible for the enhanced photocatalytic hydrogen evolution performance. Photo-induced electrons will be motivated to the conduction band of CdS under the irradiation of visible light and will further transfer to Cd(OH)<sub>2</sub> to react with H<sup>+</sup> to produce H<sub>2</sub>. The in situ-formed Cd(OH)<sub>2</sub> could effectively facilitate the electron transfer and reduce the recombination possibility of photo-generated electron-hole pairs.https://www.mdpi.com/2079-4991/13/17/2453in situ synthesis methodhydrogenphotocatalysisCdS/Cd(OH)<sub>2</sub> |
| spellingShingle | Ran Chen Liping Qian Shengyou Xu Shunli Wan Minghai Ma Lei Zhang Runren Jiang In Situ Fabrication of CdS/Cd(OH)<sub>2</sub> for Effective Visible Light-Driven Photocatalysis Nanomaterials in situ synthesis method hydrogen photocatalysis CdS/Cd(OH)<sub>2</sub> |
| title | In Situ Fabrication of CdS/Cd(OH)<sub>2</sub> for Effective Visible Light-Driven Photocatalysis |
| title_full | In Situ Fabrication of CdS/Cd(OH)<sub>2</sub> for Effective Visible Light-Driven Photocatalysis |
| title_fullStr | In Situ Fabrication of CdS/Cd(OH)<sub>2</sub> for Effective Visible Light-Driven Photocatalysis |
| title_full_unstemmed | In Situ Fabrication of CdS/Cd(OH)<sub>2</sub> for Effective Visible Light-Driven Photocatalysis |
| title_short | In Situ Fabrication of CdS/Cd(OH)<sub>2</sub> for Effective Visible Light-Driven Photocatalysis |
| title_sort | in situ fabrication of cds cd oh sub 2 sub for effective visible light driven photocatalysis |
| topic | in situ synthesis method hydrogen photocatalysis CdS/Cd(OH)<sub>2</sub> |
| url | https://www.mdpi.com/2079-4991/13/17/2453 |
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