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Atomically dispersed Au catalysts supported on CeO2 foam: controllable synthesis and CO oxidation reaction mechanism

Abstract

CO oxidation is a typical heterogeneous catalytic reaction. Development of active and stable low-temperature CO oxidation catalysts has been one of the hot topics in the field of catalysis. In this work, we explored the catalytic application of a serious of Au catalysts supported on CeO2 foam from a modified deposition-precipitation method for CO oxidation. Among them the catalyst with 1.1% Au loading content showed the highest catalytic activity, leading to the CO total conversion at 20 oC. Based on the strategy of stepwise reduction of Au loading content, we finally obtained the atomically monodisperse Au/CeO2 catalyst with high stablity and strong resistance to elevated temperature, on which in-situ DRIFTS analysis and DFT study were further performed to study the possible reactive site. Our results implied that the Au atoms on the CeO2 foam is the more stable site for CO adsorption on the catalysts.

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Publication details

The article was received on 07 Sep 2017, accepted on 27 Sep 2017 and first published on 28 Sep 2017


Article type: Paper
DOI: 10.1039/C7NR06665A
Citation: Nanoscale, 2017, Accepted Manuscript
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    Atomically dispersed Au catalysts supported on CeO2 foam: controllable synthesis and CO oxidation reaction mechanism

    H. Wang, J. Shen, J. Huang, T. Xu, J. Zhu, Y. Zhu and C. Li, Nanoscale, 2017, Accepted Manuscript , DOI: 10.1039/C7NR06665A

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