Regulating the Assembly of Precursors of Carbon Nitrides to Improve Photocatalytic Hydrogen Production
Two-dimensional graphitic carbon nitrides (2D g-C<sub>3</sub>N<sub>4</sub>) are promising photocatalysts for water splitting to hydrogen due to their non-toxicity and high stability. However, the bulk g-C<sub>3</sub>N<sub>4</sub> has some intrinsic dra...
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MDPI AG
2022-12-01
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| Series: | Catalysts |
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| Online Access: | https://www.mdpi.com/2073-4344/12/12/1634 |
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| author | Xinying Liu Chengxiao Zhao Tahir Muhmood Xiaofei Yang |
| author_facet | Xinying Liu Chengxiao Zhao Tahir Muhmood Xiaofei Yang |
| author_sort | Xinying Liu |
| collection | DOAJ |
| description | Two-dimensional graphitic carbon nitrides (2D g-C<sub>3</sub>N<sub>4</sub>) are promising photocatalysts for water splitting to hydrogen due to their non-toxicity and high stability. However, the bulk g-C<sub>3</sub>N<sub>4</sub> has some intrinsic drawbacks, such as rapid electron–hole recombination and low charge-carrier mobility, resulting in poor photocatalytic activity. Here, 2,4-diamine-6-phenyl-1,3,5-triazine was employed as a precursor to regulating the assembly of melamine and cyanuric acid in water. The resulting g-C<sub>3</sub>N<sub>4</sub> not only improved the visible light absorption and electron–hole separation but also provided more catalytic sites for enhanced photocatalytic hydrogen evolution. The modified g-C<sub>3</sub>N<sub>4</sub> (CNP10-H) showed a hydrogen-releasing rate of 2184 μmol·g<sup>−1</sup>·h<sup>−1</sup>, much higher than the bulk g-C<sub>3</sub>N<sub>4</sub>. |
| first_indexed | 2024-03-09T17:13:22Z |
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| id | doaj.art-66f5865857a44ff3bed32d675608caa5 |
| institution | Directory Open Access Journal |
| issn | 2073-4344 |
| language | English |
| last_indexed | 2024-03-09T17:13:22Z |
| publishDate | 2022-12-01 |
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| record_format | Article |
| series | Catalysts |
| spelling | doaj.art-66f5865857a44ff3bed32d675608caa52023-11-24T13:52:24ZengMDPI AGCatalysts2073-43442022-12-011212163410.3390/catal12121634Regulating the Assembly of Precursors of Carbon Nitrides to Improve Photocatalytic Hydrogen ProductionXinying Liu0Chengxiao Zhao1Tahir Muhmood2Xiaofei Yang3College of Science, Nanjing Forestry University, Nanjing 210037, ChinaCollege of Science, Nanjing Forestry University, Nanjing 210037, ChinaCollege of Science, Nanjing Forestry University, Nanjing 210037, ChinaCollege of Science, Nanjing Forestry University, Nanjing 210037, ChinaTwo-dimensional graphitic carbon nitrides (2D g-C<sub>3</sub>N<sub>4</sub>) are promising photocatalysts for water splitting to hydrogen due to their non-toxicity and high stability. However, the bulk g-C<sub>3</sub>N<sub>4</sub> has some intrinsic drawbacks, such as rapid electron–hole recombination and low charge-carrier mobility, resulting in poor photocatalytic activity. Here, 2,4-diamine-6-phenyl-1,3,5-triazine was employed as a precursor to regulating the assembly of melamine and cyanuric acid in water. The resulting g-C<sub>3</sub>N<sub>4</sub> not only improved the visible light absorption and electron–hole separation but also provided more catalytic sites for enhanced photocatalytic hydrogen evolution. The modified g-C<sub>3</sub>N<sub>4</sub> (CNP10-H) showed a hydrogen-releasing rate of 2184 μmol·g<sup>−1</sup>·h<sup>−1</sup>, much higher than the bulk g-C<sub>3</sub>N<sub>4</sub>.https://www.mdpi.com/2073-4344/12/12/1634graphitic carbon nitridephotocatalysishydrogen production |
| spellingShingle | Xinying Liu Chengxiao Zhao Tahir Muhmood Xiaofei Yang Regulating the Assembly of Precursors of Carbon Nitrides to Improve Photocatalytic Hydrogen Production Catalysts graphitic carbon nitride photocatalysis hydrogen production |
| title | Regulating the Assembly of Precursors of Carbon Nitrides to Improve Photocatalytic Hydrogen Production |
| title_full | Regulating the Assembly of Precursors of Carbon Nitrides to Improve Photocatalytic Hydrogen Production |
| title_fullStr | Regulating the Assembly of Precursors of Carbon Nitrides to Improve Photocatalytic Hydrogen Production |
| title_full_unstemmed | Regulating the Assembly of Precursors of Carbon Nitrides to Improve Photocatalytic Hydrogen Production |
| title_short | Regulating the Assembly of Precursors of Carbon Nitrides to Improve Photocatalytic Hydrogen Production |
| title_sort | regulating the assembly of precursors of carbon nitrides to improve photocatalytic hydrogen production |
| topic | graphitic carbon nitride photocatalysis hydrogen production |
| url | https://www.mdpi.com/2073-4344/12/12/1634 |
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