The photocatalytic performance and active sites of g-C3N4 effected by the coordination doping of Fe(III)

doi:10.1016/S1872-2067(19)63518-7

Abstract

Abstract: 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.

Key words: Doping, g-C₃N₄, Photocatalysis, Fe ion, NO removal

Guimei Liu, Guohui Dong, Yubin Zeng, Chuanyi Wang. The photocatalytic performance and active sites of g-C₃N₄ effected by the coordination doping of Fe(III)[J]. Chinese Journal of Catalysis, 2020, 41(10): 1564-1572.

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URL: https://www.cjcatal.com/EN/10.1016/S1872-2067(19)63518-7

https://www.cjcatal.com/EN/Y2020/V41/I10/1564

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The photocatalytic performance and active sites of g-C₃N₄ effected by the coordination doping of Fe(III)

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