Carbon doped honeycomb-like graphitic carbon nitride for photocatalytic hydrogen production
| Autor: | Yuming Zhou, Mengwei Xue, Guangqing Liu, Hui Yang, Qinpu Liu |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Materials science
Supramolecular chemistry Graphitic carbon nitride 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials Biomaterials Chitosan chemistry.chemical_compound Colloid and Surface Chemistry chemistry Polymerization Chemical engineering Specific surface area Thermal Photocatalysis 0210 nano-technology Hydrogen production |
| Zdroj: | Journal of Colloid and Interface Science. 552:728-734 |
| ISSN: | 0021-9797 |
| DOI: | 10.1016/j.jcis.2019.05.106 |
| Popis: | Carbon doped honeycomb-like graphitic carbon nitride (g-C3N4) was prepared by one-step thermal polymerization, which derived from chitosan as a carbon source together with the melamine-cyanuric acid complex as a supramolecular precursor. Interestingly, the carbon doped g-C3N4 displayed an increased specific surface area and a more negative conduction band energy level, which not only provided a large number of reaction sites for the photocatalytic hydrogen production, but also effectively enhances the separation of photogenerated electrons-holes. And the experimental results showed that the hydrogen evolution rate of the optimal sample was as high as 320 μmol·h−1, which is 29.10 times than that of bulk g-C3N4 (11 μmol·h−1). More importantly, this work may provide a promising idea for the design of efficient g-C3N4 by controlling the material morphology and combining the electronic modulation strategy. |
| Databáze: | OpenAIRE |
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