Cathodic shift in onset potential of solar oxygen evolution on hematite by 13-group oxide overlayers
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- 26 May 2011
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Energy & Environmental Science
- Vol. 4 (7), 2512-2515
- https://doi.org/10.1039/c1ee01194d
Abstract
The onset potential of photoelectrochemical water oxidation on ultrathin hematite was improved by up to 200 mV by the chemical bath deposition of 13-group oxides as overlayers. It is proposed that the corundum-type overlayers released lattice strain of the ultrathin hematite layer and decreased the density of surface states. Particularly, a Ga2O3 overlayer exhibited an enhanced photocurrent attributed to stoichiometric water splitting near the onset potential. The photocurrent was sustained over a day, attesting to its outstanding performance and durability for water splitting.Keywords
This publication has 37 references indexed in Scilit:
- Light‐Induced Water Splitting with Hematite: Improved Nanostructure and Iridium Oxide CatalysisAngewandte Chemie, 2010
- Facile Fabrication of an Efficient Oxynitride TaON Photoanode for Overall Water Splitting into H2 and O2 under Visible Light IrradiationJournal of the American Chemical Society, 2010
- Visible Light Water Splitting Using Dye-Sensitized Oxide SemiconductorsAccounts of Chemical Research, 2009
- Heterogeneous photocatalyst materials for water splittingChemical Society Reviews, 2008
- Renewable hydrogen productionInternational Journal of Energy Research, 2008
- Photoelectrochemical cellsNature, 2001
- Artificial Photosynthesis: Solar Splitting of Water to Hydrogen and OxygenAccounts of Chemical Research, 1995
- Flatband Potentials and Donor Densities of Polycrystalline α-Fe[sub 2]O[sub 3] Determined from Mott-Schottky PlotsJournal of the Electrochemical Society, 1978
- Electrochemical Photolysis of Water at a Semiconductor ElectrodeNature, 1972
- Oxygen Evolution on Semiconducting TiO[sub 2]Journal of the Electrochemical Society, 1968