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ZnO-Au nanohybrids by rapid microwave-assisted synthesis for CO oxidation

Kundu, Paromita and Singhania, Nisha and Madras, Giridhar and Ravishankar, N (2012) ZnO-Au nanohybrids by rapid microwave-assisted synthesis for CO oxidation. In: DALTON TRANSACTIONS, 41 (29). pp. 8762-8766.

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Official URL: http://dx.doi.org/10.1039/c2dt30882g

Abstract

We present a green method for the synthesis of ZnO-Au hybrids using an ultrafast microwave-based technique. This method provides good control over the nucleation of the metal nanoparticles on the oxide support, which governs the morphology and microstructure of the hybrids. The hybrids exhibit good catalytic activity for CO oxidation compared to similar hybrids reported in the literature. Detailed XPS investigation reveals the presence of Au-Zn and Au-O bonds at the interface. This surface doping leads to the formation of anionic and cationic Au sites that contribute to the enhanced activity. Our method is general and can be applied for designing other supported catalysts with controlled interfaces.

Item Type: Journal Article
Additional Information: Copy right for this article belongs to The Royal Society of Chemistry
Department/Centre: Division of Mechanical Sciences > Chemical Engineering
Date Deposited: 06 Aug 2012 07:21
Last Modified: 06 Aug 2012 07:21
URI: http://eprints.iisc.ernet.in/id/eprint/44930

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