Citation: Shengyang Wang, Bin Zeng, Can Li. Effects of Au nanoparticle size and metal-support interaction on plasmon-induced photocatalytic water oxidation[J]. Chinese Journal of Catalysis, ;2018, 39(7): 1219-1227. doi: 10.1016/S1872-2067(18)63094-3 shu

Effects of Au nanoparticle size and metal-support interaction on plasmon-induced photocatalytic water oxidation

Shengyang Wang ^a,b, ,
Bin Zeng ^a,b ,
Can Li ^a

a State Key Laboratory of Catalysis, Dalian National Laboratory for Clean Energy, and the Collaborative Innovation Center of Chemistry for Energy Mate-rials (iChEM), Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, Liaoning, China;
b University of Chinese Academy of Sciences, Beijing 100049, China

Received Date: 27 December 2017
Revised Date: 29 April 2018

Fund Project: This work was supported by the National Natural Science Foundation of China (21633010), the National Basic Research Program of China (973 pro-gram, 2014CB239400), and the Strategic Priority Research Program of the Chinese Academy of Sciences (XDB01020300).

Plasmonic photocatalysis with tunable light absorption has aroused significant attention in so-lar-to-chemical energy conversion. However, the energy conversion efficiency of plasmonic photo-catalysts is impeded by ineffective charge separation and the lack of highly active sites for redox reactions. In this work, the Au nanoparticle size and Au-TiO₂ interaction of the Au/TiO₂ plasmonic photocatalyst were adjusted simultaneously using a post-calcination treatment. The visi-ble-light-induced water oxidation activity exhibited a volcano-like relationship with the calcination temperature; the treated photocatalyst at 600℃ manifested the highest activity. Characterization with UV-visible spectra, XRD, SEM, and XPS revealed that the effect of the Au nanoparticle size and Au-TiO₂ interaction were both responsible for the increase in plasmon-induced water oxidation activity.
- Au/TiO₂,
- Water oxidation,
- Plasmonic photocatalysis,
- Size effect,
- Metal-semiconductor interaction
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