Journal
ACS ENERGY LETTERS
Volume 1, Issue 1, Pages 231-236Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsenergylett.6b00142
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Funding
- UNC EFRC Center for Solar Fuels, an Energy Frontier Research Center - U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences [DE-SC0001011]
- Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP)
- Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq)
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The water oxidation catalyst [Ru(bda)(4-O(CH2)(3)P-(O3H2)(2)-pyr)(2)], 1, (pyr = pyridine; bda = 2,2'-bipyridine-6,6'-dicarboxylate) was investigated as the catalyst part of a series of chromophore-catalyst assemblies for light-driven water splitting in dye-sensitized photoelectrosynthesis cells (DSPECs). Both co-loaded and layer-by-layer assemblies with phosphonate-Zr(IV) bridging were investigated on SnO2/TiO2 core-shell electrodes. Device performance was evaluated by both photocurrent and direct O-2 measurements in collector-generator cells. The photoelectrodes displayed impressive photocurrents (0.72-1.5 mA/cm(2)) and Faradaic efficiencies for O-2 generation (71-97%) under 1 sun illumination in pH 5.7, 0.1 M acetate buffer solutions and provided important mechanistic insights into the microscopic details for DSPEC water splitting.
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