Effective CO_(2)activation of enriched oxygen vacancies for photothermal CO_(2)methanation  

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 

机构地区：[1]Collaborative Innovation Center of Advanced Microstructures,National Laboratory of Solid State Microstructures,College of Engineering and Applied Sciences,Nanjing University,Nanjing 210093,China [2]Jiangsu Key Laboratory of Nano Technology,Nanjing University,Nanjing 210093,China [3]Shenyang National Laboratory for Materials Science,Institute of Metal Research,Chinese Academy of Sciences,Shenyang 110016,China [4]School of Science and Engineering,The Chinese University of Hong Kong,Shenzhen 518172,China [5]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

出　　处：《Journal of Materials Science & Technology》2024年第22期203-210,共8页材料科学技术（英文版）

基　　金：Financial support from the National Natural Science Foundation of China(Nos.22025202,51572191,and 21633004);the Jiangsu Funding Program for Excellent Postdoctoral Talent is gratefully acknowledged.

摘　　要：Oxygen vacancies have been widely concerned with the facilitation effects of CO_(2)activation for CO_(2)methanation.However,little attention has been paid to the generation of active intermediate species induced by enriched oxygen vacancies.Herein,we discovered that CeNiO_(3−δ)catalyst enriched oxygen vacancies can efficiently activate CO_(2)and realize high activity for photothermal CO_(2)methanation.In situ diffuse reflectance infrared Fourier transform spectroscopy(DRIFTS)proved that oxygen vacancies are beneficial to the formation of reactive intermediate species of polydentate carbonate over CeNiO_(3−δ),which is crucial for efficient CO_(2)methanation.These results revealed mechanistic insights into how effective CO_(2)activation induced by oxygen vacancies can be manipulated by adjusting the adsorption intermediate species.

关 键 词：Oxygen vacancies CO_(2)activation Active intermediate species Photo-thermal CO_(2)methanation CeNiO_(3) 

分 类 号：O646[理学—物理化学] X701[理学—化学]