文献类型：期刊文献

英文题名：Exploring the Facet-Dependent Structural Evolution of Pt/CeO2 Catalysts Induced by Typical Pretreatments for CO Oxidation

作者：Lv, Yao[1,2];Li, Aoran[1,2];Ye, Jiajie[2];Wang, Haifeng[2];Hu, Peijun[3];Wang, Kuan-Wen[4];Guo, Yun[2];Tang, Xuan[1,2];Dai, Sheng[1,2]

机构：[1]East China Univ Sci & Technol, Sch Chem & Mol Engn, Frontiers Sci Ctr Materiobiol & Dynam Chem, Feringa Nobel Prize Scientist Joint Res Ctr, Shanghai 200237, Peoples R China;[2]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;[3]Queens Univ Belfast, Sch Chem & Chem Engn, Belfast BT9 5AG, North Ireland;[4]Natl Cent Univ, Inst Mat Sci & Engn, Taoyuan 320, Taiwan

年份：2024

卷号：16

期号：33

起止页码：43556

外文期刊名：ACS APPLIED MATERIALS & INTERFACES

收录：;EI(收录号：20243316882719);WOS:【SCI-EXPANDED(收录号:WOS:001289821000001)】；

基金：This work was supported by the National Key Research and Development Program of China (2022YFB3504200, and 2021YFA1500700), National Natural Science Foundation of China (U21A20326, 22376062, and 22306063), Young Elite Scientists Sponsorship Program by CAST (YESS20230258), Shanghai Sailing Program (23YF1409100), the Science and Technology Commission of Shanghai Municipality (22ZR1415700), Shanghai Rising-Star Program (20QA1402400), and the Fundamental Research Funds for the Central Universities. Additional support was provided by the Frontiers Science Center for Materiobiology and Dynamic Chemistry and the Feringa Nobel Prize Scientist Joint Research Center.

语种：英文

外文关键词：ceria; facet-dependent; Pt; structuralevolution; structure-property relationships

摘要：Atomic-scale insights into the interactions between metals and supports play a crucial role in optimizing catalyst design, understanding catalytic mechanisms, and enhancing chemical conversion processes. The effects of oxide support on the dynamic behavior of supported metal species during pretreatments or reactions have been attracting a lot of attention; however, very less systematic integrations are carried out experimentally using real catalysts. In this study, we here utilized facet-controlled CeO2 as examples to explore their influence on the supported Pt species (1.0 wt %) during the reducing and oxidizing pretreatments that are typically applied in heterogeneous catalysts. By employing a combination of microscopy, spectroscopy, and first-principles calculations, it is demonstrated that the exposed crystal facets of CeO2 govern the evolution behavior of supported Pt species under different environmental conditions. This leads to distinct local coordinations and charge states of the Pt species, which directly influence the catalytic reactivity and can be leveraged to control the catalytic performance for CO oxidation reactions.