Journal
CHINESE JOURNAL OF CATALYSIS
Volume 40, Issue 1, Pages 105-113Publisher
SCIENCE PRESS
DOI: 10.1016/S1872-2067(18)63164-X
Keywords
Cuprous oxide; Photocatalytic activity; Stability; Sequential surface engineering; Charge transfer
Funding
- 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)
- China Postdoctoral Science Foundation [2018M632984]
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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 CuzO 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. (C) 2019, Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by Elsevier B.V. All rights reserved.
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