Electrochemical designing of Au/Pt core shell nanoparticles as nanostructured catalyst with tunable activity for oxygen reduction
文献类型：期刊论文
| 作者 | Zhai JF ; Huang MH ; Dong SJ |
| 刊名 | electroanalysis
 |
| 出版日期 | 2007 |
| 卷号 | 19期号:4页码:506-509 |
| 关键词 | PLATINUM-MONOLAYER ELECTROCATALYSTS ENHANCED RAMAN-SCATTERING ACID-SOLUTIONS O-2 REDUCTION REPLACEMENT GOLD DEPOSITION PT(111) METALS FILMS |
| ISSN号 | 1040-0397 |
| 通讯作者 | dong sj |
| 中文摘要 | au/pt core shell nanoparticles (nps) have been prepared via a layer-by-layer growth of pt layers on an nps using underpotential deposition (upd) redox replacement technique. a single upd cu monolayer replacement with pt(11) yielded a uniform pt film on au nps, and the shell thickness can be tuned by controlling the number of upd redox replacement cycles. oxygen reduction reaction (orr) in air-saturated 0.1 m h2so4 was used to investigate the electrocatalytic behavior of the as-prepared core shell nps. cyclic voltammograms of orr show that the peak potentials shift positively from 0.32 v to 0.48 v with the number of pt layers increasing from one to five, suggesting the electrocatalytic activity increases with increasing the thickness of pt shell. the increase in electrocatalytic activity may originate mostly from the large decrease of electronic influence of au cores on surface pt atoms. rotating ring-disk electrode voltammetry and rotating disk electrode voltammetry demonstrate that orr is mainly a four-electron reduction on the as-prepared modified electrode with 5 pt layers and first charge transfer is the rate-determining step. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000244421600014 |
| 公开日期 | 2010-07-13 |
| 源URL | [http://ir.ciac.jl.cn/handle/322003/13491]  |
| 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 | Zhai JF,Huang MH,Dong SJ. Electrochemical designing of Au/Pt core shell nanoparticles as nanostructured catalyst with tunable activity for oxygen reduction[J]. electroanalysis,2007,19(4):506-509. |
| APA | Zhai JF,Huang MH,&Dong SJ.(2007).Electrochemical designing of Au/Pt core shell nanoparticles as nanostructured catalyst with tunable activity for oxygen reduction.electroanalysis,19(4),506-509. |
| MLA | Zhai JF,et al."Electrochemical designing of Au/Pt core shell nanoparticles as nanostructured catalyst with tunable activity for oxygen reduction".electroanalysis 19.4(2007):506-509. |
入库方式： OAI收割
来源：长春应用化学研究所
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