Synergetic effect of dual co-catalysts on the activity of p-type Cu2O crystals with anisotropic facets.
Spatial separation of reduction sites and oxidation sites to inhibit the recombination of photogenerated electrons and holes plays a vital role in improving the efficiency of photocatalyst systems. It is very challenging to rationally deposit cocatalysts on the right facets (sites), namely, the reduction cocatalyst on the reduction facets (sites) and the oxidation cocatalyst on the oxidation facets (sites). Herein, we report that the reduction and oxidation cocatalysts can be selectively constructed on the different facets of p-type Cu2 O crystals with anisotropic facets, but not on the Cu2 O crystal with isotropic facets. The deposition of dual cocatalysts on the different facets resulted in a remarkable synergetic effect in the photocatalytic performance, which could be attributed to the spatial separation of the photogenerated charges between facets. Our work reports an instructive strategy for constructing high-efficiency photocatalyst systems for solar energy conversion.
State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Zhongshan Road 457, Dalian, 116023 (P. R. Chin.
Rengui
R
Li
State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Zhongshan Road 457, Dalian, 116023 (P. R. Chin.|University of Science and Technology of China, Hefei, 230026 (P. R. China).
Xiaoping
X
Tao
State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Zhongshan Road 457, Dalian, 116023 (P. R. Chin.|The University of Chinese Academy of Sciences, Beijing, 100049 (P. R. China).
Ruotian
R
Chen
State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Zhongshan Road 457, Dalian, 116023 (P. R. Chin.
Fengtao
F
Fan
State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Zhongshan Road 457, Dalian, 116023 (P. R. Chin. canli@dicp.ac.cn.
Can
C
Li
charge separation; cuprous oxide; photocatalysis; selective deposition; synergetic effects