Evidence of monoalkoxide species on the surface of palladium nanoparticles synthesized in ethylene glycol

Arora, Shailja and Singla, M.L. and Kapoor, Pratibha (2009) Evidence of monoalkoxide species on the surface of palladium nanoparticles synthesized in ethylene glycol. Materials Chemistry and Physics, 114 (1). pp. 107-112. ISSN 0254-0584

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Official URL: http://www.sciencedirect.com/science/article/pii/S...

Abstract

Palladium nanoparticles consisting of metallic cores and encapsulating shells serve as an intriguing catalytic model system. This investigation is aimed at enhancing our understanding of the surface composition of palladium nanoparticles synthesized in polyol and exploiting their encapsulating shells to understand the catalytic properties of the nanoparticles more rationally. We investigated the surface structure of palladium nanoparticles by Fourier transform infrared spectroscopy (FTIR) and thermogravimetric analysis (TGA). FTIR spectra showed the presence of monoalkoxide species with tilted geometry. TGA further confirmed the presence of these species along with some adsorbed byproducts formed during the reaction. Atomic force microscopy (AFM) shows the presence of diffused negatively charged coatings on the surface of the nearly spherical nanoparticles.

Item Type: Article
Uncontrolled Keywords: Nanostructures; Chemical synthesis; Surface properties; Thermogravimetric analysis (TGA); Infrared spectroscopy (IR); Atomic force microscopy (AFM)
Subjects: CSIO > Chemistry
Divisions: Agri - Instrumentation
Depositing User: Ms T Kaur
Date Deposited: 02 Feb 2012 14:42
Last Modified: 16 Apr 2012 10:15
URI: http://csioir.csio.res.in/id/eprint/231

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