Water Oxidation Catalysis: Electrocatalytic Response to Metal Stoichiometry in Amorphous Metal Oxide Films Containing Iron, Cobalt, and Nickel
University of Calgary · Institut de Recherches sur la Catalyse et l'Environnement de Lyon · +1 more institution
Abstract
Photochemical metal-organic deposition (PMOD) was used to prepare amorphous metal oxide films containing specific concentrations of iron, cobalt, and nickel to study how metal composition affects heterogeneous electrocatalytic water oxidation. Characterization of the films by energy-dispersive X-ray spectroscopy and X-ray photoelectron spectroscopy confirmed excellent stoichiometric control of each of the 21 complex metal oxide films investigated. In studying the electrochemical oxidation of water catalyzed by the respective films, it was found that small concentrations of iron produced a significant improvement in Tafel slopes and that cobalt or nickel were critical in lowering the voltage at which catalysis…
Citation impact
- FWCI
- 27.17
- Percentile
- 100%
- References
- 36
Authors
5Topics & keywords
- Cobalt
- Chemistry
- Nickel
- Tafel equation
- Catalysis
- Amorphous solid
- Inorganic chemistry
- X-ray photoelectron spectroscopy
- Clean water and sanitation