Synergistic effects of CeO_(2)/Cu_(2)O on CO catalytic oxidation:Electronic interaction and oxygen defect

作     者：Chengyan Ge Jingfang Sun Qing Tong Weixin Zou Lulu Li Lin Dong Chengyan Ge;Jingfang Sun;Qing Tong;Weixin Zou;Lulu Li;Lin Dong

作者机构：School of Chemistry and Chemical EngineeringYancheng Institute of TechnologyYancheng 224051China Jiangsu Key Laboratory of Vehicle Emissions ControlCenter of Modern AnalysisSchool of the EnvironmentNanjing UniversityNanjing 210093China School of Environmental and Chemical EngineeringJiangsu University of Science and TechnologyZhenjiang 212003China 

出 版 物：《Journal of Rare Earths》 (稀土学报(英文版))

年 卷 期：2022年第40卷第8期

页      面：1211-1218页

核心收录：

学科分类：083002[工学-环境工程] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 0709[理学-地质学] 0819[工学-矿业工程] 081705[工学-工业催化] 08[工学] 0817[工学-化学工程与技术] 0708[理学-地球物理学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 

基　　金：Project supported by the National Natural Science Foundation of China(21707066 21677069) 

主　　题：CeO_(2)/Cu_(2)O{111}{100} Synergistic effect Interfacial electronic interaction Oxygen defect CO oxidation Rare earths 

摘      要：For CO catalytic oxidation,Cu and Ce species are of great importance,between which the synergistic effect is worth *** this work,CeO_(2)/Cu_(2)O with Cu_(2)O{111}and{100}planes were comparatively explored on CO catalytic oxidation to reveal the effects of interfacial electronic interactions and oxygen *** activity result demonstrates that CeO_(2)/o-Cu_(2)O{111}has superior performance compared with CeO_(2)/c-Cu_(2)O{100}.Credit to the coordination unsaturated copper atoms(Cu_(CUS))on oCu_(2)O{111}surface,the interfacial electronic interactions on CeO_(2)/o-Cu_(2)O{111}are more obvious than those on CeO_(2)/c-Cu_(2)O{100},leading to richer oxygen defect generation,better redox and activation abilities of CO and O_(2)***,the reaction mechanism of CeO_(2)/o-Cu_(2)O{111}on CO oxidation is revealed,i.e.,CO and O_(2)are adsorbed on the Cucus on Cu_(2)O{111}and oxygen defect of CeO_(2),respectively,and then synergistically promote the CO oxidation to CO_(2).The work sheds light on the designing optimized ceria and copper-based catalysts and the mechanism of CO oxidation.