Reversible surface structural changes in Pt-based bimetallic nanoparticles during oxidation and reduction cycles
文献类型：期刊论文
| 作者 | Mu, Rentao; Fu, Qiang; Liu, Hongyang; Tan, Dali; Zhai, Runsheng; Bao, Xinhe |
| 刊名 | applied surface science
 |
| 出版日期 | 2009-05-30 |
| 卷号 | 255期号:16页码:7296-7301 |
| 关键词 | Bimetallic catalysts Dynamic surface process Oxidation Reduction XPS |
| 产权排序 | 1;1 |
| 通讯作者 | 傅强 ; 包信和 |
| 英文摘要 | the surface states of supported ptni nanoparticles treated at alternating o(2) and h(2) atmosphere were studied by x-ray photoelectron spectroscopy. reversible structural changes at the surfaces of the supported ptni nanoparticles in response to reaction gases were observed, showing nio-rich surface in oxidizing gases and pt-rich surface in reducing gases. the dynamic behaviors can be attributed to two opposite gas-driven mass transport processes at bimetallic particle surfaces, including surface segregation of pt at the bimetallic particles in h(2) and encapsulation of the particles by nio in o(2). the similar surface structural changes can be observed in other bimetallic catalyst systems, as exemplified in supported ptcu and ptco nanoparticles. (c) 2009 elsevier b. v. all rights reserved. |
| WOS标题词 | science & technology ; physical sciences ; technology |
| 类目[WOS] | chemistry, physical ; materials science, coatings & films ; physics, applied ; physics, condensed matter |
| 研究领域[WOS] | chemistry ; materials science ; physics |
| 关键词[WOS] | automotive emissions control ; metal-support interactions ; thermodynamic adhesion ; carbon-monoxide ; shape changes ; encapsulation ; tio2(110) ; stability ; hydrogen ; oxygen |
| 收录类别 | SCI |
| 原文出处 | false |
| 语种 | 英语 |
| WOS记录号 | WOS:000266097500032 |
| 公开日期 | 2010-11-30 |
| 源URL | [http://159.226.238.44/handle/321008/102285]  |
| 专题 | 大连化学物理研究所_中国科学院大连化学物理研究所 |
| 作者单位 | Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China |
| 推荐引用方式 GB/T 7714 | Mu, Rentao,Fu, Qiang,Liu, Hongyang,et al. Reversible surface structural changes in Pt-based bimetallic nanoparticles during oxidation and reduction cycles[J]. applied surface science,2009,255(16):7296-7301. |
| APA | Mu, Rentao,Fu, Qiang,Liu, Hongyang,Tan, Dali,Zhai, Runsheng,&Bao, Xinhe.(2009).Reversible surface structural changes in Pt-based bimetallic nanoparticles during oxidation and reduction cycles.applied surface science,255(16),7296-7301. |
| MLA | Mu, Rentao,et al."Reversible surface structural changes in Pt-based bimetallic nanoparticles during oxidation and reduction cycles".applied surface science 255.16(2009):7296-7301. |
入库方式： OAI收割
来源：大连化学物理研究所
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