Formation of polyhedral ceria nanoparticles with enhanced catalytic CO oxidation activity in thermal plasma via a hydrogen mediated shape control mechanism
文献类型：期刊论文
| 作者 | Zheng, Jie; Zhang, Yaohua; Song, Xubo; Li, Xingguo |
| 刊名 | JOURNAL OF NANOPARTICLE RESEARCH
 |
| 出版日期 | 2011-10-01 |
| 卷号 | 13期号:10页码:4445-4450 |
| 关键词 | Ceria Nanoparticles Catalysis Shape Control Thermal Plasma Processing Synthesis |
| ISSN号 | 1388-0764 |
| DOI | 10.1007/s11051-011-0527-4 |
| 英文摘要 | Ceria nanoparticles with well defined facets are prepared in argon-hydrogen thermal plasma followed by controlled oxidation. With increasing hydrogen fraction in the plasma, a clear sphere-to-polyhedron shape transition is observed. The heat released during the hydrogenation of cerium, which significantly enhances the species mobility on the surface, favors the growth of well defined facets. The polyhedron ceria nanoparticles, though lower in specific surface area, exhibit superior catalytic performance for CO oxidation over the round particles, which is attributed to the higher density of the reactive {200} and {220} facets on the surface. The hydrogen mediated shape control mechanism provides new insights into the shape control of nanoparticles during thermal plasma processing. |
| 语种 | 英语 |
| WOS记录号 | WOS:000295609700005 |
| 出版者 | SPRINGER |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/72435]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Li, Xingguo |
| 作者单位 | Peking Univ, Beijing Natl Lab Mol Sci, State Key Lab Rare Earth Mat Chem & Applicat, Coll Chem & Mol Engn, Beijing 100871, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zheng, Jie,Zhang, Yaohua,Song, Xubo,et al. Formation of polyhedral ceria nanoparticles with enhanced catalytic CO oxidation activity in thermal plasma via a hydrogen mediated shape control mechanism[J]. JOURNAL OF NANOPARTICLE RESEARCH,2011,13(10):4445-4450. |
| APA | Zheng, Jie,Zhang, Yaohua,Song, Xubo,&Li, Xingguo.(2011).Formation of polyhedral ceria nanoparticles with enhanced catalytic CO oxidation activity in thermal plasma via a hydrogen mediated shape control mechanism.JOURNAL OF NANOPARTICLE RESEARCH,13(10),4445-4450. |
| MLA | Zheng, Jie,et al."Formation of polyhedral ceria nanoparticles with enhanced catalytic CO oxidation activity in thermal plasma via a hydrogen mediated shape control mechanism".JOURNAL OF NANOPARTICLE RESEARCH 13.10(2011):4445-4450. |
入库方式： OAI收割
来源：化学研究所
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