Three-dimensional assemblies of carbon nitride tubes as nanoreactors for enhanced photocatalytic hydrogen production
| Autor: | Ying Xie, Dan Wang, Liping Zhang, Yanqing Jiao, Jian Liu, Chen Zhao, Cameron Alexander Hurd Price, Baojiang Jiang, Qi Li, Xudong Xiao |
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| Rok vydání: | 2020 |
| Předmět: |
Materials science
Renewable Energy Sustainability and the Environment 02 engineering and technology General Chemistry Nanoreactor 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Catalysis chemistry.chemical_compound Polymerization chemistry Chemical engineering Specific surface area Photocatalysis Molecule General Materials Science 0210 nano-technology Carbon nitride Hydrogen production |
| Zdroj: | Journal of Materials Chemistry A. 8:305-312 |
| ISSN: | 2050-7496 2050-7488 |
| DOI: | 10.1039/c9ta10688j |
| Popis: | The three-dimensional character of carbon nitride can endow it with a larger specific surface area and more catalytic active sites, which are beneficial for charge and mass transfer to enhance photocatalytic hydrogen production reactions. Herein, we reported the direct assembly of three-dimensional structured carbon nitride from the thermal polymerization of 3-amino-1,2,4-triazole (AT) and melamine molecules. The 3D C3N4 consisted of one-dimensional thick tubes with numbers of thin tubes grown uniformly on their surfaces. It was noted that the assembly was decorated with triazole ring groups that generated a special nitrogen-rich structure, further broadening the visible-light response range. Furthermore, the nitrogen-rich carbon nitride had a large surface area of 71 m2 g−1, leading to a significant increase in the number of catalytic active sites. Thus, the photocatalytic hydrogen production rate reached 7.1 mmol g−1 h−1, 11.2 times higher than that of bulk C3N4. This work may provide a new strategy to controllably synthesize three-dimensional carbon nitride assemblies for photocatalytic applications. |
| Databáze: | OpenAIRE |
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