Effective CO2 activation of enriched oxygen vacancies for photothermal CO2 methanation

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外文摘要：Oxygen vacancies have been widely concerned with the facilitation effects of CO2 activation for CO2 methanation.However,little attention has been paid to the generation of active intermediate species induced by enriched oxygen vacancies.Herein,we discovered that CeNiO3-δ catalyst enriched oxygen va-cancies can efficiently activate CO2 and realize high activity for photothermal CO2 methanation.In situ dif-fuse reflectance infrared Fourier transform spectroscopy(DRIFTS)proved that oxygen vacancies are bene-ficial to the formation of reactive intermediate species of polydentate carbonate over CeNiO3-δ,which is crucial for efficient CO2 methanation.These results revealed mechanistic insights into how effective CO2 activation induced by oxygen vacancies can be manipulated by adjusting the adsorption intermediate species.

外文关键词：

Oxygen vacanciesCO2 activationActive intermediate speciesPhoto-thermal CO2 methanationCeNiO3

作者：

Peipei Du、Guoqiang Deng、Zhonghua Li、Junchuan Sun、Lu Wang、Yongqiang Yang、Jun Wang、Yaguang Li、Xiaoming Xu、Yuanming Zhang、Wangxi Liu、Gang Liu、Zhigang Zou、Zhaosheng Li

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作者单位：

Collaborative Innovation Center of Advanced Microstructures,National Laboratory of Solid State Microstructures,College of Engineering and Applied Sciences,Nanjing University,Nanjing 210093,China

Jiangsu Key Laboratory of Nano Technology,Nanjing University,Nanjing 210093,China

Shenyang National Laboratory for Materials Science,Institute of Metal Research,Chinese Academy of Sciences,Shenyang 110016,China

School of Science and Engineering, The Chinese University of Hong Kong, Shenzhen 518172, China

Research Center for Solar Driven Carbon Neutrality,Engineering Research Center of Zero-carbon Energy Buildings and Measurement Techniques,Ministry of Education,The College of Physics Science and Technology,Institute of Life Science and Green Development,Hebei University,Baoding 071002,China

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基金：

National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaJiangsu Funding Program for Excellent Postdoctoral Talent

项目编号：

220252025157219121633004

出版年：

2024

DOI：

10.1016/j.jmst.2023.11.068

材料科学技术(英文版)

中国金属学会中国材料研究学会中国科学院金属研究所

材料科学技术(英文版)

CSTPCD

影响因子：0.657

ISSN：1005-0302

年,卷(期)：2024.189(22)