Article Dans Une Revue Electroanalysis Année : 2015

Boron-Doped Diamond Dual-Plate Deep-Microtrench Device for Generator-Collector Sulfide Sensing

Résumé

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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hal-03015036 , version 1 (19-11-2020)

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Harriet M. Harvey, Andrew J. Gross, Brooksby Paula, Alison J. Downard, Stephen J. Green, et al.. Boron-Doped Diamond Dual-Plate Deep-Microtrench Device for Generator-Collector Sulfide Sensing. Electroanalysis, 2015, 27 (11), pp.2645-2653. ⟨10.1002/elan.201500288⟩. ⟨hal-03015036⟩
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