Journal
CHEMISTRY-A EUROPEAN JOURNAL
Volume 20, Issue 15, Pages 4469-4473Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.201304109
Keywords
catalysis; CO oxidation; CO3O4@CeO2; core@shell; heteronanocomposite; nanostructures
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Funding
- National Natural Science Foundation of China [21001101, 21071140, 51272249, 91122030, 21210001]
- 863-National High Technology Research and Development Program of China [2011AA03A407]
- National Natural Science Foundation for Creative Research Group [21221061]
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Mastery of nanomaterial structure enables the control of its properties to enhance its performance for a given application. Herein, we demonstrate a fast and facile self-assembly method for the synthesis of a series of Co3O4@CeO2 core@shell cubes, which are characterized by SEM, TEM, XRD, inductively coupled plasma mass spectrometry (ICP-MS), and X-ray photoelectron spectroscopy (XPS) analyses. The results indicate that the thickness of the CeO2 shell can be tuned through simple variation of the feeding molar ratio of Ce/Co. These Co3O4@CeO2 core@shell cubes are used for catalytic CO oxidation and show good catalytic properties. Moreover, the relationship between the catalytic performance and the CeO2 shell thickness is studied in depth to optimize the catalytic properties.
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