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

Zhang, Jinqiang ¹Li, Yunguo ²Sun, Jiaming ¹Chen, Haijun ¹Zhao, Xiaoli ³Zhang, Lai-Chang ³Wang, Shuaijun ³Zhang, Huayang ⁴Duan, Xiaoguang ⁴Shi, Lei ⁵Zhang, Shu ⁵Zhang, Peng ⁶Shao, Guosheng ⁶Wu, Mingbo ⁷Zhu, Yuezhao ¹Wang, Shaobin ⁴Sun, Hongqi³

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作者信息

1. Nanjing Tech Univ
2. Univ Sci & Technol China
3. Edith Cowan Univ
4. Univ Adelaide
5. Nanjing Forestry Univ
6. Zhengzhou Univ
7. China Univ Petr East China
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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.

Key words

China/Photothermal catalysis/Thermal energy/Energetic hot carriers/Onset reaction temperature/Dry reforming of methane/Carbon dioxide reduction/CARBON-DIOXIDE/CONVERSION/METHANE/CO2/ACTIVATION/SURFACE/WATER/CH4

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出版年

2022

Applied Catalysis

ISSN：0926-3373

被引量32

参考文献量42

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