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- Title
Boron-Doped Diamond Dual-Plate Deep-Microtrench Device for Generator-Collector Sulfide Sensing.
- Authors
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
- Abstract
A BDD-BDD dual-plate microtrench electrode with 6 mm inter-electrode spacing is investigated using generator-collector electrochemistry and shown to give microtrench depth-dependent sulfide detection down to the mM 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-elec-tron) and at 1.1 V vs. SCE (6-electron).
- Subjects
BORON; DOPING agents (Chemistry); SULFIDES; CHEMICAL detectors; ELECTRODES; ELECTROCHEMISTRY
- Publication
Electroanalysis, 2015, Vol 27, Issue 11, p2645
- ISSN
1040-0397
- Publication type
Article
- DOI
10.1002/elan.201500288