Journal
CHEMICAL COMMUNICATIONS
Volume 50, Issue 63, Pages 8727-8730Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c4cc02598a
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Funding
- National Science Foundation [CHE-1150378]
- Division Of Chemistry
- Direct For Mathematical & Physical Scien [1150378] Funding Source: National Science Foundation
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Atomic layer deposition was used to deposit NiO onto thin-film alpha-Fe2O3 electrodes for photocatalytic water splitting. Photoelectrochemical conditioning of the deposited MO converts it to Ni(OH)(2), which results in a stable reduction of the photocurrent onset potential for water oxidation by similar to 300 mV and improves photocurrent density by two-fold at 1.23 V vs. RHE as compared to untreated alpha-Fe2O3. This enhanced performance is shown to be due to improved charge separation with the ion-permeable Ni(OH)(2) catalyst film. These results not only demonstrate one of the most effective water oxidation catalysts when integrated with hematite, but help establish the operational principles that lead to the improved performance.
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