Electrically Driven Redox Process in Cerium Oxides
文献类型：期刊论文
| 作者 | Gao, P ; Kang, ZC ; Fu, WY ; Wang, WL ; Bai, XD ; Wang, EG |
| 刊名 | JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
 |
| 出版日期 | 2010 |
| 卷号 | 132期号:12页码:4197 |
| 关键词 | CEO2-ZRO2 SOLID-SOLUTIONS REDUCTION OXYGEN CATALYSTS CE OXIDATION HYDROGEN SYSTEM PHASE TEM |
| ISSN号 | 0002-7863 |
| 通讯作者 | Bai, XD: Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China. |
| 中文摘要 | Cerium oxides have attracted much attention because of their uses in three-way catalysts and other catalyst applications. The redox reaction of cerium oxides, as the basis of their use as catalysts, usually takes place at high temperature (>600 K) and/or low oxygen partial pressure. There have been continuous efforts to lower the operating temperatures of cerium oxide further to improve the performance of the catalysts and reduce pollution under the cold-start condition. Here, we report a direct atomic-scale observation of a redox process in cerium oxides driven by an electrical field at ambient temperature. The dynamic changes taking place during the electrically driven redox reaction were imaged by in situ high-resolution transmission electron microscopy, where reversible phase transformations due to the migration of oxygen vacancies have been reproducibly achieved. These results could lead to the low-temperature operation of catalysts for the purification of automobile emissions of pollutants, oxygen generation, and intermediate-temperature solid oxide fuel cells. |
| 收录类别 | SCI |
| 资助信息 | NSF [60621091, 10874218, 50725209]; MOST [2009DFA01290, 2007CB936203, 2007AA03Z353]; CAS of China |
| 语种 | 英语 |
| 公开日期 | 2013-09-17 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/36970]  |
| 专题 | 物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文 |
| 推荐引用方式 GB/T 7714 | Gao, P,Kang, ZC,Fu, WY,et al. Electrically Driven Redox Process in Cerium Oxides[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY,2010,132(12):4197. |
| APA | Gao, P,Kang, ZC,Fu, WY,Wang, WL,Bai, XD,&Wang, EG.(2010).Electrically Driven Redox Process in Cerium Oxides.JOURNAL OF THE AMERICAN CHEMICAL SOCIETY,132(12),4197. |
| MLA | Gao, P,et al."Electrically Driven Redox Process in Cerium Oxides".JOURNAL OF THE AMERICAN CHEMICAL SOCIETY 132.12(2010):4197. |
入库方式： OAI收割
来源：物理研究所
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