Metal-organic framework as a host for synthesis of nanoscale Co3O4 as an active catalyst for CO oxidation |
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| Authors: | Weixia Wang Yingwei Li Rongjun Zhang Dehua He Hongli Liu Shijun Liao |
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| Affiliation: | 1. School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China;2. Department of Chemistry, Tsinghua University, Beijing 100084, China |
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| Abstract: | Co3O4 nanoparticles were prepared from cobalt nitrate that was accommodated in the pores of a metal-organic framework (MOF) ZIF-8 (Zn(MeIM)2, MeIM = 2-methylimidazole) by using a simple liquid-phase method. The ZIF-8 host was removed by pyrolysis under air and subsequently washing with an NH4Cl–NH3·H2O aqueous solution. Transmission electron microscopy (TEM) analysis shows that the obtained Co3O4 is composed of separate nanoparticles with a mean size of 18 nm. The Co3O4 nanoparticles exhibit excellent catalytic activity, cycling stability, and long-term stability in the low temperature CO oxidation. |
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| Keywords: | Metal-organic framework Cobalt oxide nanoparticles Carbon monoxide oxidation Catalyst stability |
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