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Hydrothermal synthesis of oxidized g-C₃N₄ and its regulation of photocatalytic activity

Author:
Ming, Lufei, Yue, Huan, Xu, Liming, Chen, Feng
Source:
Journal of materials chemistry A 2014 v.2 no.45 pp. 19145-19149
ISSN:
2050-7496
Subject:
acid orange 7, carbon nitride, electric current, hot water treatment, oxidation, oxygen, photocatalysis
Abstract:
Gradual oxidation of g-C₃N₄ was carried out using a mild hydrothermal method to obtain oxidized g-C₃N₄ (CNO). Besides occurring as N–O, oxygen also occurs in CNO as CO and C–O, all of which are of electron-withdrawing character and play a significant role in improving the photocatalytic performances of CNO materials. The photocurrent response of g-C₃N₄ treated for 12 hours, denoted as CNO-12, is ca. 10 times higher than that of raw g-C₃N₄, while the photocatalytic activity of CNO-12 is ca. 7 times higher than that of g-C₃N₄ in the degradation of Acid Orange 7.
Agid:
6708470