Introducing cerium into TiO_(2)@MnO_(x) hollow-sphere structure for highly active photothermocatalysis degradation of ethyl acetate and NO under H_(2)O at low temperature  

作　　者：Yinming Fan Yanhong Wang Morui Li Yinian Zhu Zongqiang Zhu Shengpeng Mo Lihao Zhang Shen Tang Xiaobin Zhou Yanping Zhang 

机构地区：[1]Collaborative Innovation Center for Water Pollution Control and Water Safety in Karst Area,Guilin University of Technology,Guilin,541004,China [2]The Guangxi Key Laboratory of Theory and Technology for Environmental Pollution Control.Guilin University of Technology.Guilin,541004,China [3]Technical Innovation Center of Mine Geological Environmental Restoration Engineering in Southern Karst Area,Nanning,530022,China

出　　处：《Journal of Rare Earths》2024年第5期889-898,I0003,共11页稀土学报（英文版）

基　　金：Project supported by the Foundation of Guangxi Science and Technology of Base&Talent Special Program(AD20159067);Guangxi Key Laboratory of Environmental Pollution Control Theory and Technology(2101Z002)。

摘　　要：The CeO_(2)-TiO_(2)@MnO_(x) catalyst was prepared by the co-precipitation method and applied to the photothermocatalysis system of ethyl acetate and NO simultaneous degradation under H_(2)O at low temperature,which introduced Ce into TiO_(2)@MnO_(x) hollow sptrera structure.The optimum TiO_(2)/MnO_(x) ratio and Ce introducing amount were obtained in the process.Among of them,the NO and ethyl acetate conversion percentage of TiO_(2)@MnO_(x)(n_(Mn):n_(Ti)=40:40)is 74%and 62%at 240℃,respectively.CeO_(2)-TiO_(2)@MnO_(x)(n_(Mn):n_(Ce)=1:1)exhibits the best catalytic performance,its efficiency for NO conversion is 83%and the conversion of ethyl acetate reaches 72%at 240℃.In addition,it is confirmed that the Cedoped nanocomposites have more uniform dispersion through various characterization and analysis methods.Meanwhile,these catalysts have a large specific surface area as well as a large number of surface-active oxygen and oxygen vacancies.It can further improve the catalytic performance based on the adjusted ratio of active components.Moreover,this work investigated the relationship between multi-metal interactions and catalytic performance in the presence of H_(2)O.Finally,the possible reaction pathways for the simultaneous removal of NO and ethyl acetate were explored in our system.

关 键 词：Photothermocatalysis Ethyl acetate NO Low temperature H_(2)O Rare earths 

分 类 号：O64[理学—物理化学]