Journal
JOURNAL OF MATERIALS CHEMISTRY A
Volume 4, Issue 14, Pages 5124-5129Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5ta10563c
Keywords
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Funding
- National Natural Science Foundation of China [51472274]
- Program of Guangzhou Science and Technology [201504010031]
- NSF of Guangdong Province [S2013030013474, 2014A030313148]
- Fundamental Research Funds for Central Universities
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Solar water splitting by photoelectrochemical (PEC) cells is emerged as a promising route for H-2 production. However, thus far no single component material can fulfill all the requirements for high efficiency PEC behavior, especially for the photoanode which conducts the water oxidation, while constructing a composite photoelectrode can result in improved performance. Herein, a simple wet-chemical treatment method is introduced to in situ fabricate ZnFe2O4 onto conductive Al:ZnO nanowire arrays for solar-driven water splitting. Benefiting from the high conductivity of Al: ZnO and the visible-spectrum absorption of ZnFe2O4, such a host-guest structure has finally led to an excellent photoelectrochemical performance with low onset potential (V-RHE = 0.38 V) and a photocurrent density of 1.72 mA cm(-2) (V-RHF = 1.23 V). Notably, the low onset potential gives this structure great potential for application in unassisted light-driven tandem-type PEC cells.
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