Multi-electron storage of photoenergy using Cu2O–TiO2 thin film photocatalyst |
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| Authors: | JP Yasomanee J Bandara |
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| Affiliation: | aInstitute of Fundamental Studies, Hantana Road, CP 20000, Kandy, Sri Lanka |
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| Abstract: | UV–vis irradiation of thin films of TiO2 (ITO/TiO2) and Cu2O/TiO2 (ITO/Cu2O/TiO2) coated on conducting glasses generate H2 from H2O and once the illumination is ceased, the H2 production was still noticeable under dark for ITO/Cu2O/TiO2 at a lesser production rate for up to 2 h. No such dark reactions were observed for ITO/TiO2 or TiO2-coated copper metal foil (Cu/TiO2). It was noticed that the irradiation of ITO/Cu2O/TiO2 leads to formation of trapped electrons and this stored energy leads to generate H2 from H2O in the dark. |
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| Keywords: | H2 generation Energy storage Electron storage Charge separation Cu2O TiO2 |
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