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• W3202017391 abstract "p-Cu2O/n-TiO2 photoanodes were produced by electrodeposition of octahedral p-type Cu2O nanoparticles over n-type TiO2 nanotubes. The photoresponse of the composite p-n photoanodes was evaluated in photoelectrochemical cells operating at zero-bias conditions under either visible or UV-vis irradiation. In both operating conditions, the produced electrodes invariably followed the p-n-based photoanode operations but exhibited lower photoelectrochemical performance as compared to the bare n-TiO2 photoanode under UV-vis light. The reported experimental analysis evidenced that such decreased photoactivity is mainly induced by the scarce efficiency of the nanosized p-n interfaces upon irradiation. To overcome such limitation, a restructuring of the originally electrodeposited p-Cu2O was promoted, following a photoelectrochemical post-treatment strategy. p-Cu2O, restructured in a 2D leaf-like morphology, allowed reaching an improved photoelectrochemical performance for the p-n-based photoanode under UV-vis light. As compared to the bare n-TiO2 behavior, such improvement consisted of photoanodic currents up to three times larger. An analysis of the mechanisms driving the transition from compact (∼100 nm) octahedral p-Cu2O to wider (∼1 μm) 2D leaf-like structures was performed, which highlighted the pivotal role played by the irradiated n-TiO2 NTs." @default.
• W3202017391 created "2021-10-11" @default.
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• W3202017391 date "2021-10-04" @default.
• W3202017391 modified "2023-10-18" @default.
• W3202017391 title "Two-Dimensional Restructuring of Cu₂O Can Improve the Performance of Nanosized n-TiO₂/p-Cu₂O Photoelectrodes under UV–Visible Light" @default.
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• W3202017391 doi "https://doi.org/10.1021/acsami.1c13399" @default.
• W3202017391 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/8517957" @default.
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