We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
ITO-ITO Dual-Plate Microgap Electrodes: E and EC' Generator-Collector Processes.
- Authors
Gross, Andrew J.; Marken, Frank
- Abstract
Tin-doped indium oxide electrodes are fabricated and employed in a dual-plate microtrench geometry with the inter-electrode gap controlling the mass transport conditions in generator-collector mode. Electrodes are fabricated with 2-50 mm gap sizes and variable trench depths by controlling assembly parameters. Non-ideal behaviour is observed for three aqueous redox systems: Ru(bpy)3+/2+3 , 1,1'-ferrocenedimethanol and Ru(NH3)3+/2+3 Under fast mass transport conditions, the former two systems exhibit slower oxidation features. For Ru(NH3)3+/2+6 non-steady-state behaviour is observed due to irreversible (ECirrev') consumption of oxygen in the microtrench. A mechanism leading to hydrogen peroxide formation via superoxide in (NH3)3+/2+6 6 solution is proposed. Under optimised conditions all three redox systems provide reliable trench depth calibration information
- Subjects
CATALYSIS; ELECTROCHEMICAL analysis; SUPEROXIDES; INDIUM oxide; MASS transfer; HYDROGEN peroxide
- Publication
Electroanalysis, 2015, Vol 27, Issue 4, p1035
- ISSN
1040-0397
- Publication type
Article
- DOI
10.1002/elan.201400554