g-C3N4 modified by hydroxyl group on the surface prepared by double salt enhanced the visible light photocatalytic activity
作者： Ying Chen , Wen Li Zhao , Yan Hua Gao
DOI: 10.1016/J.DIAMOND.2021.108425
关键词: Methyl orange 、 X-ray photoelectron spectroscopy 、 Salt (chemistry) 、 Photocatalysis 、 Chemical engineering 、 Hydroxylation 、 Degradation (geology) 、 Double salt 、 Chemistry 、 Fourier transform infrared spectroscopy
摘要: Abstract In this paper, g-C3N4 was modified by the synergistic effect of double salt KCl-(NH4)2CO3, and porous with hydroxylated surface prepared. Combined a series characterization (XRD, SEM, BET, FTIR, UV–vis DRS XPS) density functional theory (DFT) analysis, it is confirmed that KCl can cooperate ammonium (NH4)2CO3 to produce rich pore structure, (NH4)2CO3, as an alkaline slow-release agent, assist further enhance hydroxylation. KCl-(NH4)2CO3 not only plays role in formation, but also introduces hydroxyl cyano groups, which improves hydrophilicity g-C3N4, promotes separation efficiency photo-generated carriers, beneficial photocatalytic activity. Taking methyl orange (MO) model pollutant degradation, proposed possible degradation mechanism. This study provides simple, efficient widely applicable method for modifying improve its
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