Room-temperature degradation of o-xylene in simulated air using an online-regenerable plasma-catalysis reactor with low amounts of nanosized noble metals on Co_(3)O_(4)  

作　　者：狄书成 徐家成 姚水良 李晶 吴祖良 高尔豪 朱佳丽 戴连欣 刘卫华 张补河 张峻维 Shucheng DI;Jiacheng XU;Shuiliang YAO;Jing LI;Zuliang WU;Erhao GAO;Jiali ZHU;Lianxin DAI;Weihua LIU;Buhe ZHANG;Junwei ZHANG(School of Environmental Science and Engineering,Changzhou University,Changzhou 213164,People's Republic of China;Key Laboratory of Advanced Plasma Catalysis Engineering for China Petrochemical Industry,Changzhou 213164,People's Republic of China;Jiangxi Xintai Functional Materials Technology Co.Ltd.,Ji'an 343100,People's Republic of China)

机构地区：[1]School of Environmental Science and Engineering,Changzhou University,Changzhou 213164,People's Republic of China [2]Key Laboratory of Advanced Plasma Catalysis Engineering for China Petrochemical Industry,Changzhou 213164,People's Republic of China [3]Jiangxi Xintai Functional Materials Technology Co.Ltd.,Ji'an 343100,People's Republic of China

出　　处：《Plasma Science and Technology》2023年第10期26-36,共11页等离子体科学和技术（英文版）

基　　金：supported by National Natural Science Foundation of China(No.12075037);Research and Application Service Platform Project of API Manufacturing Environmental Protection and Safety Technology in China(No.2020-0107-3-1)。

摘　　要：The plasma catalytic degradation of o-xylene in simulated air was improved by loading low amounts of Pt,Pd,or Au onto Co_(3)O_(4).At room temperature,o-xylene conversion and CO_(x)selectivity using a0.1 wt%Pt/Co_(3)O_(4)catalyst reached 98.9%and 80%,and the energy efficiency was at the top level in comparison with values in the literature.A stable o-xylene degradation performance could be obtained by online regenerating the heat-insulated reactor with a high energy density.After characterization,it was found that the loading of nanosized Pt not only increased the Co^(3+)/Co^(2+)ratio,where the Co^(3+)benefitted the formation of reactive oxygen species,but also conduced Pt^(0)to oxygen activation,resulting in effective promotion of complete o-xylene oxidation.Operando plasma diffuse reflectance infrared Fourier transform spectroscopy demonstrated the complete o-xylene oxidation and proved that Pt played a key role in the complete oxidation of o-xylene.

关 键 词：nanosized Pt Co_(3)O_(4) 0-xylene degradation operando plasma DRIFTS Co^(3+)/Co^(2+)ratio 

分 类 号：O64[理学—物理化学]