The hybridization of Ag2CO3 rods with g-C3N4 sheets with improved photocatalytic activity

Journal of Saudi Chemical Society

Konglin Wu¹  Jiarui Huang¹  Xianwen Wei¹  Yanwei Cui¹  Xinjie Song² 

[1] College of Chemistry and Materials Science, Center for Nano Science and Technology, Anhui Normal University, Wuhu, Anhui 241000, People’s Republic of China;Department of Food Science and Technology, Yeungnam University, Gyeongsan, Gyeongbuk 712749, Republic of Korea;

关键词: Ag2CO3;    g-C3N4;    Composite;    Visible-light;    Photocatalysis;   

DOI  :  10.1016/j.jscs.2015.07.002

来源: DOAJ

【 摘 要 】

A series of graphitic carbon nitride/silver carbonate (g-C3N4/Ag2CO3) rod-like composites with different weight contents of g-C3N4 have been prepared by a facile precipitation method. The g-C3N4/Ag2CO3 rod-like composites exhibited higher photocatalytic activity than pure Ag2CO3 toward degradation of rhodamine B (RhB) and methylene blue (MB) under visible-light irradiation. The photocatalytic reaction follows a pseudo-first-order reaction and the rate constants for the degradation of RhB and MB by 3.5% g-C3N4/Ag2CO3 are about 2 times and 1.7 times that of pure Ag2CO3, respectively. A possible photocatalytic mechanism was proposed based on the photoluminescence (PL) spectra and a series of radical trapping experimental analyses. The remarkably improved photocatalytic performance should be ascribed to the heterostructure between Ag2CO3 and g-C3N4, which greatly promoted the photoinduced charge transfer and inhibited the recombination of electrons and holes.

【 授权许可】

Unknown