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Issue 43, 2013
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Influence of CeO2 morphology on the catalytic activity of CeO2–Pt hybrids for CO oxidation

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Abstract

Ceria, because of its excellent redox behavior and oxygen storage capacity, is used as a catalyst for several technologically important reactions. In the present study, different morphologies of nano-CeO2 (rods, cubes, octahedra) were synthesized using the hydrothermal route. An ultrafast microwave-assisted method was used to efficiently attach Pt particles to the CeO2 polyhedra. These nanohybrids were tested as catalysts for the CO oxidation reaction. The CeO2/Pt catalyst with nanorods as the support was found to be the most active catalyst. XPS and IR spectroscopy measurements were carried out in order to obtain a mechanistic understanding and it was observed that the adsorbed carbonates with lower stability on the reactive planes of nanorods and cubes are the major contributor to this enhanced catalytic activity.

Graphical abstract: Influence of CeO2 morphology on the catalytic activity of CeO2–Pt hybrids for CO oxidation

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Publication details

The article was received on 25 May 2013, accepted on 13 Aug 2013 and first published on 14 Aug 2013


Article type: Paper
DOI: 10.1039/C3DT51364E
Citation: Dalton Trans., 2013,42, 15343-15354
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    Influence of CeO2 morphology on the catalytic activity of CeO2–Pt hybrids for CO oxidation

    N. Singhania, E. A. Anumol, N. Ravishankar and G. Madras, Dalton Trans., 2013, 42, 15343
    DOI: 10.1039/C3DT51364E

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