Fabrication of Au(1 1 1) facet enriched electrode on glassy carbon

A N Chowdhury; Muhammad Tanzirul Alam; T Okajima; T Ohsaka

doi:10.1016/j.jelechem.2009.07.006

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Fabrication of Au(1 1 1) facet enriched electrode on glassy carbon

Journal article

Peer reviewed

Fabrication of Au(1 1 1) facet enriched electrode on glassy carbon

A N Chowdhury, Muhammad Tanzirul Alam, T Okajima and T Ohsaka

Journal of Electroanalytical Chemistry, Vol.634(1), pp.35-41

2009

DOI: https://doi.org/10.1016/j.jelechem.2009.07.006

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Abstract

gold nanoparticle

crystallographic orientation

AU(1 1 1) electrode

reductive desorption

arsenic detection

oxygen reduction reaction

A "two-phase protocol" is proposed to prepare gold electrode with controlled surface and crystallographic properties. Gold nanoparticles were first electrodeposited onto a glassy carbon (GC) electrode. Next, gold particles were allowed to be deposited by a colloidal chemical seeding process onto the previously electrodeposited gold nanoparticles on the GC electrode and thus Au-over-Au electrodes were fabricated. It was found that the surface area, crystallographic orientation and the surface morphology of the prepared electrodes can be controlled by adding acid or additive (I-) to the seeding media. An electrode ensemble with surface area of as high as 7.5 × 10-3 cm2 and ca. 60% Au(1 1 1) facet was fabricated by maintaining the seeding medium at pH 2.15. The application of the prepared electrode was demonstrated briefly in the electrochemical detection of arsenic(III) in water.

Details

Title: Fabrication of Au(1 1 1) facet enriched electrode on glassy carbon
Authors: A N Chowdhury (Author) - Tokyo Institute of Technology, Japan
Muhammad Tanzirul Alam (Author) - Tokyo Institute of Technology, Japan
T Okajima (Author) - Tokyo Institute of Technology, Japan
T Ohsaka (Author) - Tokyo Institute of Technology, Japan
Publication details: Journal of Electroanalytical Chemistry, Vol.634(1), pp.35-41
Publisher: Elsevier S.A.
Date published: 2009
DOI: 10.1016/j.jelechem.2009.07.006
ISSN: 1572-6657
Organisation Unit: University of the Sunshine Coast, Queensland; National Centre for Timber Durability and Design Life
Language: English
Record Identifier: 99450128602621
Output Type: Journal article

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Collaboration types: Domestic collaboration; International collaboration
Web Of Science research areas: Chemistry, Analytical; Electrochemistry