Boron-doped diamond dual-plate deep-microtrench device for generator-collector sulfide sensing

Harriet M. Harvey, Andrew J. Gross, Paula Brooksby, Alison J. Downard, Stephen J. Green, C. Peter Winlove, Nigel Benjamin, Paul G. Winyard, Matthew Whiteman, Jules L. Hammond, Pedro Estrela, Frank Marken

Research output: Contribution to journalArticle

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Abstract

A BDD-BDD dual-plate microtrench electrode with 6 μm inter-electrode spacing is investigated using generator-collector electrochemistry and shown to give microtrench depth-dependent sulfide detection down to the μM levels. The effect of the microtrench depth is compared for a “shallow” 44 μm and a “deep” 180 μm microtrench and linked to the reduction of oxygen to hydrogen peroxide which interferes with sulfide redox cycling. With a deeper microtrench and a fixed collector potential at −1.4 V vs. SCE, two distinct redox cycling potential domains are observed at 0.0 V vs. SCE (2-electron) and at 1.1 V vs. SCE (6-electron).
Original languageEnglish
Pages (from-to)2645-2653
Number of pages9
JournalElectroanalysis
Volume27
Issue number11
Early online date14 Jul 2015
DOIs
Publication statusPublished - Nov 2015

Fingerprint

Diamond
Boron
Sulfides
Diamonds
Electrodes
Electrons
Electrochemistry
Hydrogen peroxide
Hydrogen Peroxide
Oxygen
Oxidation-Reduction
7,7'-dimethoxy-(4,4'-bi-1,3-benzodioxole)-5,5'-dicarboxylic acid dimethyl ester

Keywords

  • chloride
  • serum
  • seawater
  • inflammation
  • feedback
  • sensing
  • voltametry

Cite this

Harvey, H. M., Gross, A. J., Brooksby, P., Downard, A. J., Green, S. J., Winlove, C. P., ... Marken, F. (2015). Boron-doped diamond dual-plate deep-microtrench device for generator-collector sulfide sensing. Electroanalysis, 27(11), 2645-2653. https://doi.org/10.1002/elan.201500288

Boron-doped diamond dual-plate deep-microtrench device for generator-collector sulfide sensing. / Harvey, Harriet M.; Gross, Andrew J.; Brooksby, Paula; Downard, Alison J.; Green, Stephen J.; Winlove, C. Peter; Benjamin, Nigel; Winyard, Paul G.; Whiteman, Matthew; Hammond, Jules L.; Estrela, Pedro; Marken, Frank.

In: Electroanalysis, Vol. 27, No. 11, 11.2015, p. 2645-2653.

Research output: Contribution to journalArticle

Harvey, HM, Gross, AJ, Brooksby, P, Downard, AJ, Green, SJ, Winlove, CP, Benjamin, N, Winyard, PG, Whiteman, M, Hammond, JL, Estrela, P & Marken, F 2015, 'Boron-doped diamond dual-plate deep-microtrench device for generator-collector sulfide sensing', Electroanalysis, vol. 27, no. 11, pp. 2645-2653. https://doi.org/10.1002/elan.201500288
Harvey HM, Gross AJ, Brooksby P, Downard AJ, Green SJ, Winlove CP et al. Boron-doped diamond dual-plate deep-microtrench device for generator-collector sulfide sensing. Electroanalysis. 2015 Nov;27(11):2645-2653. https://doi.org/10.1002/elan.201500288
Harvey, Harriet M. ; Gross, Andrew J. ; Brooksby, Paula ; Downard, Alison J. ; Green, Stephen J. ; Winlove, C. Peter ; Benjamin, Nigel ; Winyard, Paul G. ; Whiteman, Matthew ; Hammond, Jules L. ; Estrela, Pedro ; Marken, Frank. / Boron-doped diamond dual-plate deep-microtrench device for generator-collector sulfide sensing. In: Electroanalysis. 2015 ; Vol. 27, No. 11. pp. 2645-2653.
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abstract = "A BDD-BDD dual-plate microtrench electrode with 6 μm inter-electrode spacing is investigated using generator-collector electrochemistry and shown to give microtrench depth-dependent sulfide detection down to the μM levels. The effect of the microtrench depth is compared for a “shallow” 44 μm and a “deep” 180 μm microtrench and linked to the reduction of oxygen to hydrogen peroxide which interferes with sulfide redox cycling. With a deeper microtrench and a fixed collector potential at −1.4 V vs. SCE, two distinct redox cycling potential domains are observed at 0.0 V vs. SCE (2-electron) and at 1.1 V vs. SCE (6-electron).",
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