文献类型：期刊文献

英文题名：Preformed Pt Nanoparticles Supported on Nanoshaped CeO2 for Total Propane Oxidation

作者：Ge, Shasha[1,2,3,4];Chen, Yufen[3,4];Tang, Xuan[1,2];Shen, Yali[1,2];Lou, Yang[5];Wang, Li[1,2];Guo, Yun[1,2];Llorca, Jordi[3,4]

机构：[1]East China Univ Sci & Technol, Sch Chem & Mol Engn, Key Lab Adv, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Res Inst Ind Catalysis, Sch Chem & Mol Engn, Minist Educ, Shanghai 200237, Peoples R China;[3]Univ Politecn Cataluna, Inst Energy Technol, Dept Chem Engn, Barcelona 08019, Spain;[4]Univ Politecn Cataluna, Barcelona Res Ctr Multiscale Sci & Engn, EEBE, Barcelona 08019, Spain;[5]Jiangnan Univ, Sch Chem & Mat Engn, Key Lab Synthet & Biol Colloids, Minist Educ, Wuxi 214122, Jiangsu, Peoples R China

年份：2023

卷号：6

期号：16

起止页码：15073

外文期刊名：ACS APPLIED NANO MATERIALS

收录：;EI(收录号：20233514662028);WOS:【SCI-EXPANDED(收录号:WOS:001048472700001)】；

基金：This work was supported financially by the National Key Research and Development Program of China (2021YFB3501900, 2022YFB3504200), the National Natural Science Foundation of China (U21A20326, 21976057, and 21908079), the Fundamental Research Funds for the Central Universities, Shanghai Rising-Star Program (20QA1402400), and the Program for Professor of Special Appointment (Eastern Scholar) at Shanghai Institutions of Higher Learning. J.L. is a Serra Hunter Fellow and is grateful to ICREA Academia program, MICINN/FEDER PID2021-124572OB-C31, and 2021 SGR 01061. S.G. (CSC No. 202006740061) and Y.C. (CSC No. 201806920042) acknowledge the China Scholarship Council for the Ph.D. scholarship support.

语种：英文

外文关键词：Pt nanoparticles; CeO2 facets; Pt-CeO2 interface; Pt chemical state; C3H8 oxidation

摘要：Pt-based catalystshave been widely used for the removal of short-chainvolatile organic compounds (VOCs), such as propane. In this study,we synthesized Pt nanoparticles with a size of ca. 2.4 nm and loadedthem on various fine-shaped CeO2 with different facetsto investigate the effect of CeO2 morphology on the completeoxidation of propane. The Pt/CeO2-o catalyst with {111}facets exhibited superior catalytic activity compared to the Pt/CeO2-r catalyst with {110} and {100} facets. Specifically, theturnover frequency (TOF) value of Pt/CeO2-o was 1.8 timeshigher than that of Pt/CeO2-r. Moreover, Pt/CeO2-o showed outstanding long-term stability during 50 h. X-ray photoelectronspectroscopy (XPS) and diffuse reflectance infrared Fourier transformspectroscopy (DRIFTS) revealed that the excellent performance of Pt/CeO2-o is due to the prevalence of metallic Pt species, whichpromotes C-C bond cleavage and facilitates the rapid removalof surface formate species. In contrast, a stronger metal-supportinteraction in Pt/CeO2-r leads to easier oxidation of Ptspecies and the accumulation of intermediates, which is detrimentalto the catalytic activity. Our work provides insight into the oxidationof propane on different nanoshaped Pt/CeO2 catalysts.