文献类型：期刊文献

英文题名：Optimising PtFe nanoparticle structure to enhance catalytic activity and stability for propane oxidation

作者：Huang, Zhenpeng[1];Yu, Jihang[1];Li, Wenbo[2];Tang, Xuan[1,2];Guo, Yanglong[1];Guo, Yun[1];Wang, Li[1];Dai, Sheng[2];Liu, Rui[3];Zhan, Wangcheng[1]

机构：[1]East China Univ Sci & Technol, Res Inst Ind Catalysis, Sch Chem & Mol Engn, State key Lab green Chem Engn & Ind catalysis, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Sch Chem & Mol Engn, Key Lab Adv Mat & Feringa Nobel Prize Scientist Jo, Shanghai 200237, Peoples R China;[3]Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Environm Chem & Ecotoxicol, Beijing 100085, Peoples R China

年份：2024

卷号：340

外文期刊名：APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY

收录：;EI(收录号：20233614690387);WOS:【SCI-EXPANDED(收录号:WOS:001080094700001)】；

基金：Z.H. and W.Z. acknowledge financial support from the National Key Research and Development Program (2022YFB3504200) and the National Natural Science Foundation of China (21922602, 22076047) . Y.G. thanks the National Natural Science Foundation of China (U21A20326) . Y.G. and L.W. thanks the Shanghai Science and Technology Innovation Action Plan (20dz1204200) and Fundamental Research Funds for the Central Universities. R.L. thanks the National Natural Science Founda-tion of China (22276209) .

语种：英文

外文关键词：Bimetallic catalyst; Surface segregation; Propane oxidation; Active oxygen species; C-H bond cleavage

摘要：Although the development of highly active and stable platinum catalysts for the complete oxidation of hydrocarbons is crucial, there are still significant challenges that need to be addressed. Herein, the surface structure of PtFe nanoparticles (NPs) on PtFe/CeO2-x (x = CO, H, O) catalysts was precisely tuned via thermal treatment in CO, H2 and O2 atmospheres. The structure of the PtFe NPs on the PtFe/CeO2-O catalyst consisted of dispersed FeOx nanoclusters anchored on the PtFe NPs core. As a result, the PtFe/CeO2-O exhibited superior activity and water resistance for propane oxidation among all catalysts, which stems from the cooperation among robust metallic Pt sites, abundant active oxygen species, and FeOx nanoclusters as additional sites for oxygen supply. However, the reaction path of propane oxidation was similar among the PtFe/CeO2-x catalysts. This study offers encouraging insights for the deliberate development of robust and high-performing bimetallic catalysts to eradicate volatile organic compound pollutants. Synopsis: The CeO2-supported core-shell-like PtFe-FeOx NPs catalyst synthesised via calcination treatment in oxygen atmosphere exhibits the excellent activity, good durability and water resistance for propane oxidation at low temperature.