Photoelectrochemical reduction of aqueous protons with a CuO/CuBi2O4 heterojunction under visible light irradiation
Lee, Chong Yong
Physical Chemistry Chemical Physics
Royal Society of Chemistry
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Park, H., Lee, C. Y., & Reisner, E. (2014). Photoelectrochemical reduction of aqueous protons with a CuO/CuBi2O4 heterojunction under visible light irradiation. Physical Chemistry Chemical Physics https://doi.org/10.1039/C4CP03883E
A p-type heterojunction photoelectrode consisting of platinized CuBi2O4 layered on a CuO film was prepared. The CuO|CuBi2O4|Pt electrode photo-generates H2 in pH neutral aqueous solution during visible light irradiation and exhibits a substantially enhanced photocurrent compared to CuO|Pt and CuBi2O4|Pt electrodes. Reduced electron-hole recombination by the band offsets in the heterostructure is responsible for the improved photoelectrochemical performance of CuO|CuBi2O4 with a small band-gap of approximately 1.5 eV.
The work at Cambridge was supported by the Christian Doppler Research Association (Austrian Federal Ministry of Economy, Family and Youth and National Foundation for Research, Technology and Development), the OMV Group the EPSRC (EP/H00338X/2) and BBSRC (BB/K010220/1).
External DOI: https://doi.org/10.1039/C4CP03883E
This record's URL: https://www.repository.cam.ac.uk/handle/1810/245949