Journal
ACS ENERGY LETTERS
Volume 4, Issue 1, Pages 203-+Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsenergylett.8b01698
Keywords
-
Categories
Funding
- Research Foundation-Flanders (FWO) [G.0962.13, G.0B49.15]
- KU Leuven Research Fund [C14/15/053]
- Flemish government [Meth/15/04]
- Hercules Foundation [HER/11/14]
- European Union (Horizon 2020) Marie Sklodowska-Curie innovation program [722591]
- NSFC [21773031]
- Hercules project [AKUL/13/19]
Ask authors/readers for more resources
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.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available