Shape dependent electrocatalytic behaviour of silver nanoparticles

Bansal, Vipul, Li, Vivian, O'Mullane, Anthony P., & Bhargava, Suresh K. (2010) Shape dependent electrocatalytic behaviour of silver nanoparticles. CrystEngComm, 12(12), pp. 4280-4286.

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Abstract

The electrochemical and electrocatalytic behaviour of silver nanoprisms, nanospheres and nanocubes of comparable size in an alkaline medium have been investigated to ascertain the shape dependent behaviour of silver nanoparticles, which are an extensively studied nanomaterial. The nanomaterials were synthesised using chemical methods and characterised with UV-visible spectroscopy, transmission electron microscopy and X-ray diffraction. The nanomaterials were immobilised on a substrate glassy carbon electrode and characterised by cyclic voltammetry for their surface oxide electrochemistry. The electrocatalytic oxidation of hydrazine and formaldehyde and the reduction of hydrogen peroxide were studied by performing cyclic voltammetric and chronoamperometric experiments for both the nanomaterials and a smooth polycrystalline macrosized silver electrode. In all cases the nanomaterials showed enhanced electrocatalytic activity over the macro-silver electrode. Significantly, the silver nanoprisms that are rich in hcp lamellar defects showed greater activity than nanospheres and nanocubes for all reactions studied.

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ID Code: 64271
Item Type: Journal Article
Refereed: Yes
Additional Information: Prior to commencement at QUT
DOI: 10.1039/C0CE00215A
ISSN: 1466-8033
Divisions: Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: Copyright 2010 Royal Society of Chemistry
Deposited On: 22 Nov 2013 01:50
Last Modified: 25 Nov 2013 01:52

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