Citation: Denghui Jiang, Yuegang Zhang, Xinheng Li. Synergistic effects of CuO and Au nanodomains on Cu₂O cubes for improving photocatalytic activity and stability[J]. Chinese Journal of Catalysis, ;2019, 40(1): 105-113. doi: 10.1016/S1872-2067(18)63164-X shu

Synergistic effects of CuO and Au nanodomains on Cu₂O cubes for improving photocatalytic activity and stability

a State Key Laboratory for Oxo Synthesis and Selective Oxidation and Suzhou Research Institute of LICP, Lanzhou Institute of Chemical Physics(LICP), Chinese Academy of Sciences, Suzhou 215123, Jiangsu, China;
b Centre for Mineral Materials, School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, Hunan, China;
c i-Lab, Suzhou Institute of Nano-tech and Nano-bionics, Chinese Academy of Sciences, Suzhou 215123, Jiangsu, China

Received Date: 31 August 2018
Revised Date: 15 September 2018

Fund Project: This work was supported by National Natural Science Foundation of China (21573263, 21872157, 51402346), National Key Research and Development Program of China from Ministry of Science and Technology of China (2016YFE0105700), Jiangsu Provincial Fundamental Research Foundation of China (BK20151236), Henan provincial co-operation and open foundation (60), and China Postdoctoral Science Foundation (2018M632984).

Cu₂O is a promising photocatalyst, but it suffers from poor photocatalytic activity and stability, especially for Cu₂O cubes. Herein, we report the deposition of CuO and Au nanodomains on Cu₂O cubes to form dual surface heterostructures (HCs) to improve photocatalytic activity and stability. The apparent quantum efficiency of Au/CuO/Cu₂O HCs was ca. 123 times that of pristine Cu₂O. In addition, the Au/CuO/Cu₂O HCs maintained nearly 80% of its original activity after eight cycles in contrast to five cycles for the Au/Cu₂O material. Therefore, CuO and Au domains greatly improved the photocatalytic activity and stability of the Cu₂O cubes due to the synergistic effect of the HCs.
- Cuprous oxide,
- Photocatalytic activity,
- Stability,
- Sequential surface engineering,
- Charge transfer
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Synergistic effects of CuO and Au nanodomains on Cu₂O cubes for improving photocatalytic activity and stability