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- W4214580228 abstract "Abstract Photoelectrochemical reduction of CO 2 is a promising approach for renewable fuel production. We herein report a novel strategy for preparation of hybrid photocathodes by immobilizing molecular cobalt catalysts on TiO 2 ‐protected n + ‐p Si electrodes (Si | TiO 2 ) coated with multiwalled carbon nanotubes (CNTs) by π–π stacking. Upon loading a composite of Co II (BrqPy) ( BrqPy =4′,4′′‐bis(4‐bromophenyl)‐2,2′ : 6′,2′′ : 6′′,2′′′‐quaterpyridine) catalyst and CNT on Si | TiO 2 , a stable 1‐Sun photocurrent density of −1.5 mA cm −2 was sustained over 2 h in a neutral aqueous solution with unity Faradaic efficiency and selectivity for CO production at a bias of zero overpotential (−0.11 V vs. RHE), associated with a turnover frequency (TOF CO ) of 2.7 s −1 . Extending the photoelectrocatalysis to 10 h, a remarkable turnover number (TON CO ) of 57000 was obtained. The high performance shown here is substantially improved from the previously reported photocathodes relying on covalently anchored catalysts." @default.
- W4214580228 created "2022-03-02" @default.
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- W4214580228 date "2022-03-23" @default.
- W4214580228 modified "2023-10-18" @default.
- W4214580228 title "Aqueous CO <sub>2</sub> Reduction on Si Photocathodes Functionalized by Cobalt Molecular Catalysts/Carbon Nanotubes" @default.
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- W4214580228 doi "https://doi.org/10.1002/ange.202201086" @default.
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