Metastable Ce-terminated (111) surface of ceria
文献类型：期刊论文
| 作者 | Zhao, Yanan; Xing, Wandong; Meng, Fanyan; Sha, Haozhi; Yu, Yunbo; Ma, Xingqiao; Yu, Rong |
| 刊名 | APPLIED SURFACE SCIENCE
 |
| 出版日期 | 2021-04-30 |
| 卷号 | 546页码:- |
| 关键词 | Surface structure Ceria Metastable structure ACTEM First-principles calculations |
| ISSN号 | 0169-4332 |
| 英文摘要 | Applications of ceria (CeO2) in catalysis are closely related to the behavior of oxygen at the surface and subsurface. In this study, we show that the steps at the (111) surface of CeO2 are highly reducible. Using aberrationcorrected transmission electron microscopy, we observed simultaneous loss of surface and subsurface oxygen close to a step. Despite their large changes in atomic coordination, the outermost Ce atoms in the Ce-terminated surface has a negligible relaxation compared with the O-terminated surface. The outermost and subsurface Ce atoms of the Ce-terminated surface are reduced to valences of +1 and +3, and electronic configuration of 5s(2)5p(6)4f(1)6s(2) and 5s(2)5p(6)4f(1), respectively. Both of them have a local magnetic moment and they couple antifer-romagnetically. The existence of the Ce-termination is important for a complete understanding of the surface structure and properties of CeO2. |
| WOS研究方向 | Chemistry, Physical ; Materials Science, Coatings & Films ; Physics, Applied ; Physics, Condensed Matter |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/46055]  |
| 专题 | 生态环境研究中心_水污染控制实验室 |
| 作者单位 | 1.Univ Sci & Technol Beijing, Dept Phys, Beijing Engn Res Ctr Detect & Applicat Weak Magne, Beijing 100083, Peoples R China 2.Tsinghua Univ, Sch Mat Sci & Engn, Natl Ctr Electron Microscopy Beijing, Beijing 100084, Peoples R China 3.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Joint Lab Environm Simulat & Pollut Con, Beijing 100085, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhao, Yanan,Xing, Wandong,Meng, Fanyan,et al. Metastable Ce-terminated (111) surface of ceria[J]. APPLIED SURFACE SCIENCE,2021,546:-. |
| APA | Zhao, Yanan.,Xing, Wandong.,Meng, Fanyan.,Sha, Haozhi.,Yu, Yunbo.,...&Yu, Rong.(2021).Metastable Ce-terminated (111) surface of ceria.APPLIED SURFACE SCIENCE,546,-. |
| MLA | Zhao, Yanan,et al."Metastable Ce-terminated (111) surface of ceria".APPLIED SURFACE SCIENCE 546(2021):-. |
入库方式： OAI收割
来源：生态环境研究中心
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。