Photo-thermal catalysis has recently emerged as a promising alternative to overcome the limitations of traditional photocatalysis. Despite its potential, most of the photo-thermal systems still lack adequate selectivity patterns and appropriate analysis on the underlying reaction pathways, thus hampering a wide implementation. Herein, we report the preparation of a novel photocatalyst based on Pd nanoparticles (NPs) supported on barium titanate (BTO) for the selective photo-thermal reduction of CO 2 that displays catalytic rates of up to 8.2 mol CO /g Pd ·h. The photocatalyst allows for a tailored selectivity towards CO or CH 4 as a function of the metal loading or the light intensity. Mechanistic studies indicate that both thermal and non-thermal contributions of light play a role in the overall reaction pathway, each of them being dominant upon changing reaction conditions.
Bibliographical noteKAUST Repository Item: Exported on 2021-10-26
Acknowledgements: Funding for this work was provided by King Abdullah University of Science and Technology. Authors would like to thank Mrs Sandra Ramirez for her contribution to the artwork in this manuscript.
ASJC Scopus subject areas
- General Energy
- Environmental Chemistry
- General Materials Science
- General Chemical Engineering