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Citation: Lingxiang Wang, Liang Wang, Jian Zhang, Hai Wang, Feng-Shou Xiao. Enhancement of the activity and durability in CO oxidation over silica-supported Au nanoparticle catalyst via CeO_x modification[J]. Chinese Journal of Catalysis, ;2018, 39(10): 1608-1614. doi: 10.1016/S1872-2067(18)63136-5 shu

Enhancement of the activity and durability in CO oxidation over silica-supported Au nanoparticle catalyst via CeO_x modification

Key Laboratory of Applied Chemistry of Zhejiang Province and Department of Chemistry, Zhejiang University, Hangzhou 310028, Zhejiang, China

Received Date: 11 June 2018
Revised Date: 7 July 2018

Fund Project: This work was supported by the National Key Research and Development Program of China (2018YFB060128), National Natural Science Foundation of China (91645105, 91634201), and Natural Science Foundation of Zhejiang Province (LR18B030002).

The supported Au nanoparticles have been regarded as promising catalysts for CO oxidation but still suffer from unsatisfactory catalytic activity and durability. Herein, we show a simple and efficient strategy to simultaneously enhance the catalytic activity and durability for CO oxidation. Key to the success is modification of the supported Au nanoparticle catalyst with nanosized CeO_x to construct abundant Au-CeO_x interface. Owing to the maximized interfacial effect on the CeO_x-modified Au nanoparticles, the concentration of positively-charged Au species (Au^δ+) was remarkably improved, leading to enhanced catalytic activities in the oxidation of CO. Importantly, the stability of Au nanoparticles is remarkably increased by CeO_x modification, exhibiting good durability in a continuous test of CO oxidation at higher temperatures.
- CO oxidation,
- Gold,
- Cerium oxide,
- Interface,
- Sinter resistance
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Enhancement of the activity and durability in CO oxidation over silica-supported Au nanoparticle catalyst via CeOx modification

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通讯作者: 陈斌, bchen63@163.com

Enhancement of the activity and durability in CO oxidation over silica-supported Au nanoparticle catalyst via CeO_x modification