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A General One-pot Strategy for the Synthesis of Au@multi-oxides Yolk@shell Nanospheres with Enhanced Catalytic Performance

Abstract

By integrating redox self-assembly and redox etching process, we report a general one-pot strategy for the synthesis of Au@multi-MxOy (M = Co, Ce, Fe, Sn) yolk@shell nanospheres. Without any additional protecting molecule or reductant, the whole reaction is a clean redox process that happens among the inorganic metal salts in an alkaline aqueous solution. By using this method, Au@Co3O4/CeO2 (Au@Co-Ce), Au@Co3O4/Fe2O3 (Au@Co-Fe), Au@CeO2/SnO2 (Au@Ce-Sn) yolk@shell nanospheres with binary oxides as shell, Au@Co3O4/CeO2/Fe2O3 (Au@Co-Ce-Fe) yolk@shell nanospheres with ternary oxides as shell and Au@Co3O4/CeO2/Fe2O3/SnO2 (Au@Co-Ce-Fe-Sn) yolk@shell nanospheres with quaternary oxides as shell can be obtained. Subsequently, the catalytic CO oxidation was selected as the catalytic model, and the Au@Co-Ce system was chosen as the catalyst. It was found that the catalytic activity of Au@Co-Ce yolk@shell nanospheres can be optimized by altering relative proportion of Co and Ce oxides.

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Publication details

The article was received on 03 Apr 2018, accepted on 03 Aug 2018 and first published on 06 Aug 2018


Article type: Edge Article
DOI: 10.1039/C8SC01520A
Citation: Chem. Sci., 2018, Accepted Manuscript
  • Open access: Creative Commons BY license
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    A General One-pot Strategy for the Synthesis of Au@multi-oxides Yolk@shell Nanospheres with Enhanced Catalytic Performance

    J. Li, S. Song, Y. Long, S. Yao, X. Ge, L. Wu, Y. Zhang, X. Wang, X. Yang and H. Zhang, Chem. Sci., 2018, Accepted Manuscript , DOI: 10.1039/C8SC01520A

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