中国科学院大连化学物理研究所机构知识库
Advanced  
DICP OpenIR  > 中国科学院大连化学物理研究所  > 期刊论文
题名: Reversible surface structural changes in Pt-based bimetallic nanoparticles during oxidation and reduction cycles
作者: Mu, Rentao1;  Fu, Qiang1;  Liu, Hongyang1;  Tan, Dali1;  Zhai, Runsheng1;  Bao, Xinhe1
通讯作者: 傅强 ;  包信和
关键词: Bimetallic catalysts ;  Dynamic surface process ;  Oxidation ;  Reduction ;  XPS
刊名: APPLIED SURFACE SCIENCE
发表日期: 2009-05-30
DOI: 10.1016/j.apsusc.2009.03.086
卷: 255, 期:16, 页:7296-7301
收录类别: SCI
文章类型: Article
部门归属: 5
项目归属: 502
产权排名: 1;1
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
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.
关键词[WOS]: AUTOMOTIVE EMISSIONS CONTROL ;  METAL-SUPPORT INTERACTIONS ;  THERMODYNAMIC ADHESION ;  CARBON-MONOXIDE ;  SHAPE CHANGES ;  ENCAPSULATION ;  TIO2(110) ;  STABILITY ;  HYDROGEN ;  OXYGEN
语种: 英语
原文出处: 查看原文
WOS记录号: WOS:000266097500032
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/102285
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

Files in This Item:

There are no files associated with this item.


作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China

Recommended Citation:
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.
Service
 Recommend this item
 Sava as my favorate item
 Show this item's statistics
 Export Endnote File
Google Scholar
 Similar articles in Google Scholar
 [Mu, Rentao]'s Articles
 [Fu, Qiang]'s Articles
 [Liu, Hongyang]'s Articles
CSDL cross search
 Similar articles in CSDL Cross Search
 [Mu, Rentao]‘s Articles
 [Fu, Qiang]‘s Articles
 [Liu, Hongyang]‘s Articles
Related Copyright Policies
Null
Social Bookmarking
  Add to CiteULike  Add to Connotea  Add to Del.icio.us  Add to Digg  Add to Reddit 
所有评论 (0)
暂无评论
 
评注功能仅针对注册用户开放,请您登录
您对该条目有什么异议,请填写以下表单,管理员会尽快联系您。
内 容:
Email:  *
单位:
验证码:   刷新
您在IR的使用过程中有什么好的想法或者建议可以反馈给我们。
标 题:
 *
内 容:
Email:  *
验证码:   刷新

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.

 

 

Valid XHTML 1.0!
Powered by CSpace