Journal
CHEMSUSCHEM
Volume 8, Issue 19, Pages 3242-3247Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cssc.201500730
Keywords
hematite; heterogeneous catalysis; nanorods; ruthenium; water oxidation
Funding
- Swedish Research Council
- K&A Wallenberg Foundation
- Swedish Energy Agency
- China Scholarship Council (CSC)
- National Natural Science Foundation of China [21120102036, 91233201]
- National Basic Research Program of China [2014CB239402]
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Photoelectrochemical (PEC) cells for light-driven water splitting are prepared using hematite nanorod arrays on conductive glass as the photoanode. These devices improve the photocurrent of the hematite-based photoanode for water splitting, owing to fewer surface traps and decreased electron recombination resulting from the one-dimensional structure. By employing a molecular ruthenium co-catalyst, which contains a strong 2,6-pyridine-dicarboxylic acid anchoring group at the hematite photoanode, the photocurrent of the PEC cell is enhanced with high stability for over 10000s in a 1m KOH solution. This approach can pave a route for combining one-dimensional nanomaterials and molecular catalysts to split water with high efficiency and stability.
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