The nature of active sites for plasmon-mediated photothermal catalysis and heat-coupled photocatalysis in dry reforming of methane

Authors

Jinqiang Zhang, Edith Cowan University
Liang Wang
Xiaoli Zhao, Edith Cowan University
Lei Shi
Haijun Chen
Shu Zhang
Peng Zhang
Shuaijun Wang, Edith Cowan University
Laichang Zhang, Edith Cowan UniversityFollow
Yinfeng Wang
Xiaoyuan Wang
Yuezhao Zhu
Huayang Zhang
Xiaoguang Duan
Mingbo Wu
Guosheng Shao
Shaobin Wang
Hongqi Sun, Edith Cowan UniversityFollow

Document Type

Journal Article

Publication Title

Energy & Environmental Materials

Publisher

Wiley

School

School of Engineering

RAS ID

56571

Funders

ECU Vice-Chancellor's Professorial Research Fellowship / National Natural Science Foundation of China / Australian Research Council

Grant Number

ARC Numbers : DP170104264, DP190103548, LE120100026

Grant Link

http://purl.org/au-research/grants/arc/DP170104264 http://purl.org/au-research/grants/arc/DP190103548

Comments

Zhang, J., Wang, L., Zhao, X., Shi, L., Chen, H., Zhang, S., . . . Sun, H. (2023). The nature of active sites for plasmon-mediated photothermal catalysis and heat-coupled photocatalysis in dry reforming of methane. Energy & Environmental Materials, 6(5), article e12416. https://doi.org/10.1002/eem2.12416

Abstract

Solar energy-induced catalysis has been attracting intensive interests and its quantum efficiencies in plasmon-mediated photothermal catalysis (P-photothermal catalysis) and external heat-coupled photocatalysis (E-photothermal catalysis) are ultimately determined by the catalyst structure for photo-induced energetic hot carriers. Herein, different catalysts of supported (TiO2-P25 and Al2O3) platinum quantum dots are employed in photo, thermal, and photothermal catalytic dry reforming of methane. Integrated experimental and computational results unveil different active sites (hot zones) on the two catalysts for photo, thermal, and photothermal catalysis. The hot zones of P-photothermal catalysis are identified to be the metal–support interface on Pt/P25 and the Pt surface on Pt/Al2O3, respectively. However, a change of the active site to the Pt surface on Pt/P25 is for the first time observed in E-photothermal catalysis (external heating temperature of 700 °C). The hot zones contribute to the significant enhancements in photothermal catalytic reactivity against thermocatalysis. This study helps to understand the reaction mechanism of photothermal catalysis to exploit efficient catalysts for solar energy utilization and fossil fuels upgrading. © 2022 Zhengzhou University.

DOI

10.1002/eem2.12416

Access Rights

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