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

Exploring the applications of a pulsating jet hydrodynamic modulated voltammetric (HMV) system – Electrochemistry of nanostructured Pt electrodes and trace analysis
Exploring the applications of a pulsating jet hydrodynamic modulated voltammetric (HMV) system – Electrochemistry of nanostructured Pt electrodes and trace analysis
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.
hydrodynamic modulated voltammetry, nanostructures, trace analysis
1572-6657
68-73
Kuleshova, Jekaterina
95594d04-c0e8-4a1f-b5cf-b3f90b314dd6
Birkin, Peter R.
ba466560-f27c-418d-89fc-67ea4f81d0a7
Elliott, Joanne M.
68967f54-82e0-4d8e-bc09-dc4522d18b2c
Kuleshova, Jekaterina
95594d04-c0e8-4a1f-b5cf-b3f90b314dd6
Birkin, Peter R.
ba466560-f27c-418d-89fc-67ea4f81d0a7
Elliott, Joanne M.
68967f54-82e0-4d8e-bc09-dc4522d18b2c

Kuleshova, Jekaterina, Birkin, Peter R. and Elliott, Joanne 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), 68-73. (doi:10.1016/j.jelechem.2009.09.013).

Record type: Article

Abstract

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.

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Published date: November 2009
Keywords: hydrodynamic modulated voltammetry, nanostructures, trace analysis

Identifiers

Local EPrints ID: 148663
URI: http://eprints.soton.ac.uk/id/eprint/148663
ISSN: 1572-6657
PURE UUID: 541da652-46c8-431f-91ba-682105b0f611
ORCID for Peter R. Birkin: ORCID iD orcid.org/0000-0002-6656-4074

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Date deposited: 29 Apr 2010 15:40
Last modified: 20 Jul 2019 01:20

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