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Exploring the applications of a pulsating jet hydrodynamic modulated voltammetric (HMV) system - electrochemistry of nanostructured Pt electrodes and trace analysis

Kuleshova, J., Birkin, P.R. and Elliott, J.M. (2009) Exploring the applications of a pulsating jet hydrodynamic modulated voltammetric (HMV) system - electrochemistry of nanostructured Pt electrodes and trace analysis. Journal of Electroanalytical Chemistry, 636 (1-2). pp. 68-73. ISSN 1572-6657

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To link to this article DOI: 10.1016/j.jelechem.2009.09.013

Abstract/Summary

The electrochemistry of nanostructured electrodes is investigated using hydrodynamic modulated voltammetry (HMV). Here a liquid crystal templating process is used to produce a platinum modified electrode with a relatively high surface area (Roughness factor, Rf = 42.4). The electroreduction of molecular oxygen at a nanostructured platinum surface is used to demonstrate the ability of HMV to discriminate between Faradaic and non-Faradaic electrode reactions. The HMV approach shows that the reduction of molecular oxygen shows considerable hysteresis correlating with the formation and stripping of oxide species at the platinum surface. Without the HMV analysis it is difficult to discern the same detail under the conditions employed. In addition the detection limit of the apparatus is explored and shown, under ideal conditions, to be of the order of 45 nmol dm(-3) employing [Fe(CN)(6)](4-) as a test species. (C) 2009 Elsevier B.V. All rights reserved.

Item Type:Article
Refereed:Yes
Divisions:Faculty of Life Sciences > School of Chemistry, Food and Pharmacy > Department of Chemistry
ID Code:11413
Uncontrolled Keywords:Hydrodynamic modulated voltammetry, Nanostructures, Trace analysis , MESOPOROUS PLATINUM MICROELECTRODES, ROTATING-DISK ELECTRODES, OXYGEN REDUCTION, MICROJET ELECTRODE, FABRICATION, MECHANISM, FILMS

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