Regulation of energetic hot carriers on Pt/TiO2 with thermal energy for photothermal catalysis

Document Type

Journal Article

Publication Title

Applied Catalysis B: Environmental

Volume

309

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

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

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.

DOI

10.1016/j.apcatb.2022.121263

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