| Interface-controlled synthesis of ceo2(111) and ceo2(100) and their structural transition on pt(111) | |
| Zhang, Yi1,3; Feng, Wei2; Yang, Fan1; Bao, Xinhe1 | |
| 刊名 | Chinese journal of catalysis
 |
| 2019-02-01 | |
| 卷号 | 40期号:2页码:204-213 |
| 关键词 | Interfacial interaction Pt/ceox catalyst Ceo2(111) Ceo2(100) C-ce2o3(100) |
| ISSN号 | 0253-9837 |
| DOI | 10.1016/s1872-2067(18)63171-7 |
| 通讯作者 | Yang, fan(fyang@dicp.ac.cn) ; Bao, xinhe(xhbao@dicp.ac.cn) |
| 英文摘要 | Ceria-based catalytic materials are known for their crystal-face-dependent catalytic properties. to obtain a molecular-level understanding of their surface chemistry, controlled synthesis of ceria with well-defined surface structures is required. we have thus studied the growth of ceox nanostructures (nss) and thin films on pt(111). the strong metal-oxide interaction has often been invoked to explain catalytic processes over the pt/ceox catalysts. however, the pt-ceox interaction has not been understood at the atomic level. we show here that the interfacial interaction between pt and ceria could indeed affect the surface structures of ceria, which could subsequently determine their catalytic chemistry. while ceria on pt(111) typically exposes the ceo2(111) surface, we found that the structures of ceria layers with a thickness of three layers or less are highly dynamic and dependent on the annealing temperatures, owing to the electronic interaction between pt and ceox. a two-step kinetically limited growth procedure was used to prepare the ceria film that fully covers the pt(111) substrate. for a ceria film of similar to 3-4 monolayer (ml) thickness on pt(111), annealing in ultrahigh vacuum (uhv) at 1000 k results in a surface of ceo2 (100), stabilized by a c-ce2o3(100) buffer layer. further oxidation at 900 k transforms the surface of the ceo2(100) thin film into a hexagonal ceo2(111) surface. (c) 2019, dalian institute of chemical physics, chinese academy of sciences. published by elsevier b.v. all rights reserved. |
| WOS关键词 | WATER-GAS SHIFT ; METAL-SUPPORT INTERACTION ; SURFACE-STRUCTURE ; CO OXIDATION ; CERIA ; CATALYSTS ; GROWTH ; FILMS ; HYDROGENATION ; CEO2 |
| WOS研究方向 | Chemistry ; Engineering |
| WOS类目 | Chemistry, Applied ; Chemistry, Physical ; Engineering, Chemical |
| 语种 | 英语 |
| 出版者 | SCIENCE PRESS |
| WOS记录号 | WOS:000457815900009 |
| 内容类型 | 期刊论文 |
| URI标识 | http://www.corc.org.cn/handle/1471x/2372818 |
| 专题 | 大连化学物理研究所 |
| 通讯作者 | Yang, Fan; Bao, Xinhe |
| 作者单位 | 1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Liaoning, Peoples R China 2.Sci & Technol Surface Phys & Chem Lab, Jiangyou 621908, Sichuan, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Yi,Feng, Wei,Yang, Fan,et al. Interface-controlled synthesis of ceo2(111) and ceo2(100) and their structural transition on pt(111)[J]. Chinese journal of catalysis,2019,40(2):204-213. |
| APA | Zhang, Yi,Feng, Wei,Yang, Fan,&Bao, Xinhe.(2019).Interface-controlled synthesis of ceo2(111) and ceo2(100) and their structural transition on pt(111).Chinese journal of catalysis,40(2),204-213. |
| MLA | Zhang, Yi,et al."Interface-controlled synthesis of ceo2(111) and ceo2(100) and their structural transition on pt(111)".Chinese journal of catalysis 40.2(2019):204-213. |
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