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High quality oxide-free metallic nanoparticles: a strategy for synthesis through laser ablation in aqueous medium

Malviya, Kirtiman Deo and Chattopadhyay, Kamanio (2015) High quality oxide-free metallic nanoparticles: a strategy for synthesis through laser ablation in aqueous medium. In: JOURNAL OF MATERIALS SCIENCE, 50 (2). pp. 980-989.

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Official URL: http://dx.doi.org/ 10.1007/s10853-014-8658-5

Abstract

The paper explores the synthesis of oxide-free nanoparticles of Ag and Cu through laser ablation of pure targets under aqueous medium and tuning the quality and size through addition of Polyvinylpyrrolidone (PVP) in the medium. The size distribution of nanoparticles reduces from 37 +/- 30 nm and 13 +/- 5 nm to 32 +/- 12 nm and 4 +/- 1 nm for Ag and Cu with changes in PVP concentration from 0.00 to 0.02 M, respectively. Irregular shaped particles of Ag with Ag2O phase and a Cu-Cu2O core-shell particles form without the addition of PVP, while oxide layer is absent with 0.02 M of PVP. The recent understanding of the mechanism of particle formation during laser ablation under liquid medium allows us to rationalize our observation.

Item Type: Journal Article
Additional Information: Copyright for this article belongs to the SPRINGER, 233 SPRING ST, NEW YORK, NY 10013 USA
Department/Centre: Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Depositing User: Id for Latest eprints
Date Deposited: 08 Jan 2015 07:45
Last Modified: 08 Jan 2015 07:45
URI: http://eprints.iisc.ac.in/id/eprint/50555

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