Title

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

Funders

National Natural Science Foundation of China (51676096), Australian Research Council

Grant Number

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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