Citation: WANG Ming-Fang, WANG Ping, XU Shun-Qiu, LI Xiao-Zheng. Cooperation Effect of Cu(Ⅱ) Cocatalyst and Graphene for Enhanced AgBr Visible-light Photocatalytic Performance[J]. Chinese Journal of Inorganic Chemistry, ;2015, 31(10): 1981-1986. doi: 10.11862/CJIC.2015.235 shu

Cooperation Effect of Cu(Ⅱ) Cocatalyst and Graphene for Enhanced AgBr Visible-light Photocatalytic Performance

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Department of Chemistry, School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, Wuhan 430070, China

Corresponding author: WANG Ping,
Received Date: 2 March 2015
Available Online: 4 July 2015
Fund Project: 国家级大学生创新创业训练计划项目(No.20141049714006) (No.20141049714006)国家自然科学基金(No.21477094)资助项目。 (No.21477094)

In this study, a simple low-temperature solution-impregnation method was developed for the fabrication of highly efficient AgBr photocatalyst with cooperation effect of Cu(Ⅱ) cocatalyst and graphene. Photocatalytic experimental results for the depolarization of methyl orange (MO) aqueous solution indicated that the AgBr with cooperation effect of Cu(Ⅱ) cocatalyst and graphene displayed very good photocatalytic activity. Especially, Cu(Ⅱ)(0.5 mol·L^-1)/AgBr-rGO(0.5wt%) (rGO, reduced graphene oxide) showed the highest photocatalytic activity with a rate constant 0.027 31 min^-1, while this value is higher than that of the pure AgBr (0.008 07 min^-1), AgBr-rGO (0.5%)(0.015 98 min^-1) and Cu(Ⅱ) (0.5 mol·L^-1)/AgBr (0.015 19 min^-1) by a factor of 3.38, 1.7 and 1.8, respectively. The reason for enhanced photocatalytic performance is that Cu(Ⅱ) can quickly catch the photogenerated electrons from AgBr and graphene has large specific surface which may provide a lot reduction active sites for Cu(Ⅱ), resulting in a rapid separation of photogenerated electrons and holes. This work may provide the new insights for the preparation of high performance AgBr photocatalyst.
- AgBr;Cu(Ⅱ) cocatalyst;graphene;cooperation effect;visible-light photocatalytic activity
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沈阳化工大学材料科学与工程学院沈阳 110142