The photocatalytic performance and active sites of g-C3N4 effected by the coordination doping of Fe(III)
| Autor: | Chuanyi Wang, Guimei Liu, Guohui Dong, Yubin Zeng |
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| Rok vydání: | 2020 |
| Předmět: |
Materials science
biology Passivation Amidogen Doping Inorganic chemistry Active site 02 engineering and technology General Medicine 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Catalysis Metal chemistry.chemical_compound chemistry visual_art visual_art.visual_art_medium Photocatalysis biology.protein 0210 nano-technology Triazine |
| Zdroj: | Chinese Journal of Catalysis. 41:1564-1572 |
| ISSN: | 1872-2067 |
| Popis: | Element doping is a simple and effective method to improve photocatalytic activity of g-C3N4. However, the doping model and mechanism of metal elements are still uncharacterized. In this study, we found that Fe(III) can be doped into g-C3N4 through the coordination between amidogen and Fe(III). After activity tests, it was found that this coordination doping of Fe(III) could enhance the RhB oxidation and Cr(VI) reduction activities of g-C3N4 in interesting ways, but it is not helpful for the NO-removal performance of g-C3N4. Characterization and calculation results show that the coordination of Fe(III) can not only improve the transfer of photogenerated electrons, but it also can passivate the carbon site of triazine rings, which is the active site of NO-removal. This study revealed some doping mechanisms and effect mechanisms of elemental metal in photocatalysis. |
| Databáze: | OpenAIRE |
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