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|Title: ||C(sp(3))-H Bond Activation by Perovskite Solar Photocatalyst Cell|
|Authors: ||Huang, Haowei|
Seo, Jin Won
Steele, Julian A.
Roeffaers, Maarten B. J.
|Issue Date: ||2019|
|Publisher: ||AMER CHEMICAL SOC|
|Citation: ||ACS ENERGY LETTERS, 4(1), p. 203-208|
|Abstract: ||Inspired by efficient perovskite solar cells, we developed a three component hybrid perovskite-based solar photocatalyst cell, NiOx/FAPbBr(3)/TiO2, for C(sp(3))-H bond activation with high selectivity (similar to 90%) and high conversion rates (3800 mu mol g(-1) h(-1)) under ambient conditions. Time-resolved spectroscopy on our photocatalytic cell reveals efficient exciton dissociation and charge separation, where TiO2 and NiOx serve as the electron- and hole-transporting layers, respectively. The photogenerated charge carriers injected into TiO2 and NiOx drive the challenging C-H activation reaction via the synergetic effects of their band alignment relative to FAPbBr(3). The reaction pathway is investigated by controlling the free-radical formation, and we find that C-H activation is mainly triggered by hole oxidation. Besides aromatic alkanes, also the C(sp(3))-H bond in cycloalkanes can be oxidized selectively. This work demonstrates a generic strategy for engineering high-performance photocatalysts based on the perovskite solar cell concept.|
|Notes: ||[Huang, Haowei; Steele, Julian A.; Roeffaers, Maarten B. J.] Katholieke Univ Leuven, Ctr Surface Chem & Catalysis COK, Dept Microbial & Mol Syst, Celestijnenlaan 200F, B-3001 Leuven, Belgium. [Yuan, Haifeng; Solis-Fernandez, Guillermo; Hendrix, Jelle; Debroye, Elke; Hofkens, Johan] Katholieke Univ Leuven, Fac Sci, Dept Chem, Celestijnenlaan 200F, B-3001 Heverlee, Belgium. [Zhao, Jiwu; Long, Jinlin] Fuzhou Univ, State Key Lab Photocatalysis Energy & Environm, Fuzhou 350002, Fujian, Peoples R China. [Zhou, Chen; Seo, Jin Won] Katholieke Univ Leuven, Dept Mat Engn, Kasteelpk Arenberg 44, B-3001 Heverlee, Belgium.|
|ISI #: ||000456493100026|
|Type: ||Journal Contribution|
|Appears in Collections: ||Research publications|
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