Metal Mesh and Narrow Band Gap Mn<sub>0.5</sub>Cd<sub>0.5</sub>S Photocatalyst Cooperation for Efficient Hydrogen Production
A novel co-catalyst system under visible-light irradiation was constructed using high-purity metal and alloy mesh and a Mn<sub>0.5</sub>Cd<sub>0.5</sub>S photocatalyst with a narrow band gap (1.91 eV) prepared by hydrothermal synthesis. The hydrogen production rate of Mn<s...
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MDPI AG
2022-08-01
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| Online Access: | https://www.mdpi.com/1996-1944/15/17/5861 |
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| author | Haifeng Zhu Renjie Ding Xinle Dou Jiashun Zhou Huihua Luo Lijie Duan Yaping Zhang Lianqing Yu |
| author_facet | Haifeng Zhu Renjie Ding Xinle Dou Jiashun Zhou Huihua Luo Lijie Duan Yaping Zhang Lianqing Yu |
| author_sort | Haifeng Zhu |
| collection | DOAJ |
| description | A novel co-catalyst system under visible-light irradiation was constructed using high-purity metal and alloy mesh and a Mn<sub>0.5</sub>Cd<sub>0.5</sub>S photocatalyst with a narrow band gap (1.91 eV) prepared by hydrothermal synthesis. The hydrogen production rate of Mn<sub>0.5</sub>Cd<sub>0.5</sub>S changed from 2.21 to 6.63 mmol·(g·h)<sup>−1</sup> with the amount of thioacetamide, which was used as the sulphur source. The introduction of Ag, Mo, Ni, Cu, and Cu–Ni alloy meshes efficiently improved the H<sub>2</sub> production rate of the co-catalyst system, especially for the Ni mesh. The improvement can reach an approximately six times greater production, with the highest H<sub>2</sub> production rate being 37.65 mmol·(g·h)<sup>−1</sup>. The results showed that some bulk non-noble metal meshes can act as good or better than some noble metal nanoparticles deposited on the main photocatalyst for H<sub>2</sub> evolution due to the promotion of photoinduced electron transfer, increase in redox reaction sites, and prevention of the recombination of carriers. |
| first_indexed | 2024-03-10T01:36:54Z |
| format | Article |
| id | doaj.art-df5e84e8da88435ca3c7d88584f4b2cd |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T01:36:54Z |
| publishDate | 2022-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-df5e84e8da88435ca3c7d88584f4b2cd2023-11-23T13:31:26ZengMDPI AGMaterials1996-19442022-08-011517586110.3390/ma15175861Metal Mesh and Narrow Band Gap Mn<sub>0.5</sub>Cd<sub>0.5</sub>S Photocatalyst Cooperation for Efficient Hydrogen ProductionHaifeng Zhu0Renjie Ding1Xinle Dou2Jiashun Zhou3Huihua Luo4Lijie Duan5Yaping Zhang6Lianqing Yu7School of Science, China University of Petroleum, Qingdao 266580, ChinaSchool of Science, China University of Petroleum, Qingdao 266580, ChinaSchool of Science, China University of Petroleum, Qingdao 266580, ChinaSchool of Science, China University of Petroleum, Qingdao 266580, ChinaCollege of Materials Science and Engineering, China University of Petroleum, Qingdao 266580, ChinaCollege of Materials Science and Engineering, China University of Petroleum, Qingdao 266580, ChinaSchool of Science, China University of Petroleum, Qingdao 266580, ChinaCollege of Materials Science and Engineering, China University of Petroleum, Qingdao 266580, ChinaA novel co-catalyst system under visible-light irradiation was constructed using high-purity metal and alloy mesh and a Mn<sub>0.5</sub>Cd<sub>0.5</sub>S photocatalyst with a narrow band gap (1.91 eV) prepared by hydrothermal synthesis. The hydrogen production rate of Mn<sub>0.5</sub>Cd<sub>0.5</sub>S changed from 2.21 to 6.63 mmol·(g·h)<sup>−1</sup> with the amount of thioacetamide, which was used as the sulphur source. The introduction of Ag, Mo, Ni, Cu, and Cu–Ni alloy meshes efficiently improved the H<sub>2</sub> production rate of the co-catalyst system, especially for the Ni mesh. The improvement can reach an approximately six times greater production, with the highest H<sub>2</sub> production rate being 37.65 mmol·(g·h)<sup>−1</sup>. The results showed that some bulk non-noble metal meshes can act as good or better than some noble metal nanoparticles deposited on the main photocatalyst for H<sub>2</sub> evolution due to the promotion of photoinduced electron transfer, increase in redox reaction sites, and prevention of the recombination of carriers.https://www.mdpi.com/1996-1944/15/17/5861co-catalyst systemMn<sub>0.5</sub>Cd<sub>0.5</sub>Smetal and alloy meshH<sub>2</sub> evolutionphotoinduced electron transfer |
| spellingShingle | Haifeng Zhu Renjie Ding Xinle Dou Jiashun Zhou Huihua Luo Lijie Duan Yaping Zhang Lianqing Yu Metal Mesh and Narrow Band Gap Mn<sub>0.5</sub>Cd<sub>0.5</sub>S Photocatalyst Cooperation for Efficient Hydrogen Production Materials co-catalyst system Mn<sub>0.5</sub>Cd<sub>0.5</sub>S metal and alloy mesh H<sub>2</sub> evolution photoinduced electron transfer |
| title | Metal Mesh and Narrow Band Gap Mn<sub>0.5</sub>Cd<sub>0.5</sub>S Photocatalyst Cooperation for Efficient Hydrogen Production |
| title_full | Metal Mesh and Narrow Band Gap Mn<sub>0.5</sub>Cd<sub>0.5</sub>S Photocatalyst Cooperation for Efficient Hydrogen Production |
| title_fullStr | Metal Mesh and Narrow Band Gap Mn<sub>0.5</sub>Cd<sub>0.5</sub>S Photocatalyst Cooperation for Efficient Hydrogen Production |
| title_full_unstemmed | Metal Mesh and Narrow Band Gap Mn<sub>0.5</sub>Cd<sub>0.5</sub>S Photocatalyst Cooperation for Efficient Hydrogen Production |
| title_short | Metal Mesh and Narrow Band Gap Mn<sub>0.5</sub>Cd<sub>0.5</sub>S Photocatalyst Cooperation for Efficient Hydrogen Production |
| title_sort | metal mesh and narrow band gap mn sub 0 5 sub cd sub 0 5 sub s photocatalyst cooperation for efficient hydrogen production |
| topic | co-catalyst system Mn<sub>0.5</sub>Cd<sub>0.5</sub>S metal and alloy mesh H<sub>2</sub> evolution photoinduced electron transfer |
| url | https://www.mdpi.com/1996-1944/15/17/5861 |
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