Rotating ring-disk electrode study of competitive photo-oxidation at. cap alpha. -Fe/sub 2/O/sub 3/ photoanodes in aqueous solution

Journal Article · Sun Jul 01 04:00:00 EDT 1984 · J. Electrochem. Soc.; (United States)

DOI:https://doi.org/10.1149/1.2115910· OSTI ID:6355659

Anderman, M; Kennedy, J M

Competition reactions at ..cap alpha..-Fe/sub 2/O/sub 3/ photoanodes were studied using the RRDE technique. It was found that iodide, bromide, and chloride ions were photo-oxidized in preference to water in acidic solutions. The competition ratio was measured as a function of halide-ion concentration, halide-ion flux, light intensity, electrode potential, and solution pH. A direct correlation between the disk photocurrent and the competition ratio at a given halide flux was demonstrated. A lack in selectivity for the dark current was also observed.

• Research Organization: Department of Chemistry, University of California, Santa Barbara, California
• OSTI ID: 6355659
• Journal Information: J. Electrochem. Soc.; (United States), Journal Name: J. Electrochem. Soc.; (United States) Vol. 131:7; ISSN JESOA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400500* -- Photochemistry
ANODES
AQUEOUS SOLUTIONS
BROMIDES
BROMINE COMPOUNDS
CHALCOGENIDES
CHEMICAL REACTIONS
CHEMISTRY
CHLORIDES
CHLORINE COMPOUNDS
DISPERSIONS
ELECTRODES
HALIDES
HALOGEN COMPOUNDS
IODIDES
IODINE COMPOUNDS
IRON COMPOUNDS
IRON OXIDES
MIXTURES
OXIDATION
OXIDES
OXYGEN COMPOUNDS
PHOTOANODES
PHOTOCHEMISTRY
SOLUTIONS
TRANSITION ELEMENT COMPOUNDS