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Fabrication, Characterisation and Voltammetric Studies of Gold Amalgam Nanoparticle Modified Electrodes
Author(s) -
Welch Christine M.,
Nekrassova Olga,
Dai Xuan,
Hyde Michael E.,
Compton Richard G.
Publication year - 2004
Publication title -
chemphyschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.016
H-Index - 140
eISSN - 1439-7641
pISSN - 1439-4235
DOI - 10.1002/cphc.200400263
Subject(s) - electrode , colloidal gold , materials science , nanoparticle , nanotechnology , glassy carbon , fabrication , cyclic voltammetry , electrochemistry , chemistry , pathology , medicine , alternative medicine
The fabrication, characterisation, and electroanalytical application of gold and gold amalgam nanoparticles on glassy carbon electrodes is examined. Once the deposition parameters for gold nanoparticle electrodes were optimised, the analytical utility of the electrodes was examined in Cr III electroanalysis. It was found that gold nanoparticle modified (Au‐NM) electrodes possess higher sensitivity than gold macroelectrodes. In addition, gold amalgam nanoparticle modified (AuHg‐NM) electrodes were fabricated and characterised. The response of those electrodes was recorded in the presence of important environmental analytes (heavy metal cations). It was found AuHg‐NM electrodes demonstrate a unique voltammetric behaviour and can be applied for electroanalysis when enhanced sensitivity is crucial.