A facile method for scalable synthesis of ultrathin g-C3N4 nanosheets for efficient hydrogen production
| Autor: | Zheng Wang, Su Juan Wang, Hai Ping Wang, Ji Jun Jiang, Chao Jie Li, Jian-Hua Zhang, Xunjin Zhu, Cheng-Yong Su, Ya-Jun Hou, Mei Pan, Cheng Yi Zhu |
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| Rok vydání: | 2018 |
| Předmět: |
Condensation polymer
Materials science Renewable Energy Sustainability and the Environment Graphitic carbon nitride Nanotechnology 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences chemistry.chemical_compound chemistry Photocatalysis General Materials Science Charge carrier 0210 nano-technology Absorption (electromagnetic radiation) Melamine foam Hydrogen production Visible spectrum |
| Zdroj: | Journal of Materials Chemistry A. 6:18252-18257 |
| ISSN: | 2050-7496 2050-7488 |
| Popis: | 2D graphitic carbon nitride (g-C3N4) has attracted great attention as one of the rising-star candidates for prominent water-splitting photocatalysts. Here, we report an extremely facile one-step, template-free method to synthesize ultrathin g-C3N4 nanosheets (CN-UMF) by thermal polycondensation of urea simply covered with kitchen-available melamine foam (MF). Compared with g-C3N4 agglomerates (CN-U) prepared without the covering of MF, the as-synthesized CN-UMF has an average thickness of about 4.5 nm and an enlarged surface area of 150.3 m2 g−1, leading to enhanced visible light absorption and charge carrier separation abilities. Therefore, it is able to serve as an efficient water-splitting photocatalyst to result in an outstanding hydrogen production rate of 5498 μmol g−1 h−1. This work provides a new facile strategy for the scalable synthesis of 2D g-C3N4 photocatalysts and paves the way for batch and green production of other 2D materials with good performance. |
| Databáze: | OpenAIRE |
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