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Issue 3, 2013
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High catalytic activity for CO oxidation of Co3O4 nanoparticles in SiO2 nanocapsules

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Abstract

In this paper, rattle-type Co3O4@SiO2 nanoparticles were prepared via thermal decomposition of Co3[Co(CN)6]2@SiO2 core–shell nanocubes. The uniform Co3[Co(CN)6]2 nanocubes were coated with porous silica and then calcined at 550 °C for 1 h to generate a large amount of Co3O4 nanocrystals in a cube-shaped silica nanocapsule via thermal decomposition of a Co3[Co(CN)6]2 nanocube. The nanorattles exhibit excellent catalytic activity for CO oxidation, the CO conversion rate reaches 100% at 150 °C. It is suggested that Co3O4 nanocrystals with clean surfaces were produced via this approach; moreover, the porous silica shell could protect Co3O4 nanocrystals from external contamination, which makes these novel nanostructures exhibit a remarkable catalytic performance.

Graphical abstract: High catalytic activity for CO oxidation of Co3O4 nanoparticles in SiO2 nanocapsules

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Publication details

The article was received on 30 Aug 2012, accepted on 15 Oct 2012 and first published on 16 Oct 2012


Article type: Paper
DOI: 10.1039/C2TA00132B
Citation: J. Mater. Chem. A, 2013,1, 637-643
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    High catalytic activity for CO oxidation of Co3O4 nanoparticles in SiO2 nanocapsules

    N. Yan, Q. Chen, F. Wang, Y. Wang, H. Zhong and L. Hu, J. Mater. Chem. A, 2013, 1, 637
    DOI: 10.1039/C2TA00132B

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