Size-dependent oxygen storage ability of nano-sized ceria
文献类型：期刊论文
| 作者 | Sun CT ; Xue DF |
| 刊名 | physical chemistry chemical physics
 |
| 出版日期 | 2013 |
| 卷号 | 15期号:34页码:14414-14419 |
| 关键词 | ENHANCED THERMAL-STABILITY ZIRCONIA SOLID-SOLUTIONS CEO2 NANOPARTICLES CAPACITY DETERMINES ADSORPTION |
| ISSN号 | 1463-9076 |
| 通讯作者 | xue df |
| 中文摘要 | we thermodynamically studied the size-dependent oxygen storage ability of nano-sized ceria by tracing the surface ce/o ratio of octahedral particles with different diameters, from the viewpoint of lattice ce and o in a ceo2 crystallographic structure. the high surface ce/o ratio with small scale particle size has more excess surface ce4+ ions, which allows ceria to have an increasing oxygen storage ability in a crystalline lattice. for the perfect octahedron growth shape of ceria, the nonstoichiometric surfaces can produce excess ce4+ ions, ce4+ ions can be stabilized by bonding with lattice oxygen, leading to an enhanced oxygen storage ability of ceria. with the increasing particle size, the surface ce/o ratio approaches to 0.5 owing to the decreased contributions of atoms located at the edges and corners. when the octahedron diameter d = 0.55 nm, the surface ce/o ratio can reach 0.75. when d = 7.58 nm, the surface ce/o ratio decreases down to 0.51. if d >= 14.61 nm, the surface ce/o ratios are equal to 0.5. the present study deepens the insight of the size-dependent oxygen storage ability of nano-sized ceria, focusing on the size-dependent excess ce4+ on nonstoichiometric surfaces of ceria in thermodynamics. |
| 收录类别 | SCI收录期刊论文 |
| 语种 | 英语 |
| WOS记录号 | WOS:000322725000033 |
| 公开日期 | 2014-04-18 |
| 源URL | [http://ir.ciac.jl.cn/handle/322003/50225]  |
| 专题 | 长春应用化学研究所_长春应用化学研究所知识产出_期刊论文 |
| 推荐引用方式 GB/T 7714 | Sun CT,Xue DF. Size-dependent oxygen storage ability of nano-sized ceria[J]. physical chemistry chemical physics,2013,15(34):14414-14419. |
| APA | Sun CT,&Xue DF.(2013).Size-dependent oxygen storage ability of nano-sized ceria.physical chemistry chemical physics,15(34),14414-14419. |
| MLA | Sun CT,et al."Size-dependent oxygen storage ability of nano-sized ceria".physical chemistry chemical physics 15.34(2013):14414-14419. |
入库方式： OAI收割
来源：长春应用化学研究所
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