Regulation of energetic hot carriers on Pt/TiO2 with thermal energy for photothermal catalysis
Abstract
Thermal and solar energies are two pivotal components in photothermal catalysis, however, their synergistic energy efficiency for a maximum yield is more important but less investigated. Herein, systematic studies unveil the promotion effects of external heat on the excitation and utilization of energetic hot carriers (EHC) on Pt/TiO2 in photothermal catalysis. Onset reaction temperature of a reaction is found to be the key in control of the energy synergy. When the minimum onset reaction temperature of uphill processes is exceeded, a smaller number of active sites on the catalyst are available to EHC, resulting in a suppressed thermal effect. Rational regulation of EHC and thermal energy in photothermal catalysis leads to optimum quantum efficiencies of both dry reforming of methane and reverse water-gas shift reactions at a medium level of temperature. This work provides new insights to balance thermal and solar-driven catalysis to better conduct photothermal catalysis for fossil fuels upgrading.
Keywords
Carbon dioxide reduction, Dry reforming of methane, Energetic hot carriers, Onset reaction temperature, Photothermal catalysis, Thermal energy
Document Type
Journal Article
Date of Publication
7-15-2022
Volume
309
Publication Title
Applied Catalysis B: Environmental
Publisher
Elsevier
School
School of Engineering
RAS ID
52213
Funders
National Natural Science Foundation of China (51676096), Australian Research Council
Grant Number
ARC Number : DP170104264
Grant Link
http://purl.org/au-research/grants/arc/DP170104264
Copyright
subscription content
Comments
Zhang, J., Li, Y., Sun, J., Chen, H., Zhu, Y., Zhao, X., ... & Sun, H. (2022). Regulation of energetic hot carriers on Pt/TiO2 with thermal energy for photothermal catalysis. Applied Catalysis B: Environmental, 121263. https://doi.org/10.1016/j.apcatb.2022.121263