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Gas-phase synthesis of size-classified polyhedral In(2)O(3) nanoparticles

Nanda, Karuna Kar and Rouenhoff, Marcel and Kruis, Frank Einar (2012) Gas-phase synthesis of size-classified polyhedral In(2)O(3) nanoparticles. In: Journal of Materials Chemistry, 22 (7). pp. 3133-3138.

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Monodisperse polyhedral In(2)O(3) nanoparticles were synthesized by differential mobility classification of a polydisperse aerosol formed by evaporation of indium at atmospheric pressure. When free molten indium particles oxidize, oxygen is absorbed preferentially on certain planes leading to the formation of polyhedral In(2)O(3) nanoparticles. It is shown that the position of oxygen addition, its concentration, the annealing temperature and the type of carrier gas are crucial for the resulting particle shape and crystalline quality. Semiconducting nanopolyhedrals, especially nanocubes used for sensors, are expected to offer enhanced sensitivity and improved response time due to the higher surface area as compared to spherical particles.

Item Type: Journal Article
Publication: Journal of Materials Chemistry
Publisher: Royal Society of Chemistry
Additional Information: Copyright of this article belongs to Royal Society of Chemistry.
Department/Centre: Division of Chemical Sciences > Materials Research Centre
Date Deposited: 17 Feb 2012 11:41
Last Modified: 17 Feb 2012 11:41
URI: http://eprints.iisc.ac.in/id/eprint/43535

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