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- W4293579543 endingPage "3138" @default.
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- W4293579543 abstract "The cobalt–phosphate amorphous oxyhydroxide water-splitting catalyst, CoPi, is widely investigated because of its reactivity and self-repair analogous to the oxygen-evolving catalyst in Photosystem II. CoPi films show optical absorption features analogous to those seen more generally in transition metal oxides and oxygen-evolving catalysts. Possible photocatalytic properties of CoPi have, up until now, not been considered. Herein, we report on the finding of wavelength-dependent photo-electrochemical responses in CoPi. Red light excitation (623 nm) into a manifold of charge transfer and d–d electronic transitions was seen to produce photoanodic current responses that enhance OER, while blue light excitation (415 nm) within the ligand-to-metal charge-transfer transition was found to produce photocathodic responses that inhibit OER and oxidative repair. These results demonstrate intrinsic wavelength-dependent photo-electrochemistry in CoPi and opportunities to use light-excited states in CoPi, and potentially other transition metal oxides, to enhance OER and to track reaction mechanisms using light-triggered, pump–probe techniques." @default.
- W4293579543 created "2022-08-30" @default.
- W4293579543 creator A5005892636 @default.
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- W4293579543 creator A5083959394 @default.
- W4293579543 date "2022-08-30" @default.
- W4293579543 modified "2023-10-16" @default.
- W4293579543 title "Photo-electrochemical Effect in the Amorphous Cobalt Oxide Water Oxidation Catalyst Cobalt–Phosphate (CoPi)" @default.
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- W4293579543 doi "https://doi.org/10.1021/acsenergylett.2c01560" @default.