Heterogeneous Au-Pt nanostructures with enhanced catalytic activity toward oxygen reduction
文献类型：期刊论文
| 作者 | Ye, Feng; Liu, Hui; Hu, Weiwei; Zhong, Junyu; Chen, Yingying; Cao, Hongbin; Yang, Jun |
| 刊名 | DALTON TRANSACTIONS
 |
| 出版日期 | 2012 |
| 卷号 | 41期号:10页码:2898-2903 |
| 关键词 | PHASE-TRANSFER IDENTIFICATION CORE-SHELL STRUCTURES FUEL-CELL ELECTROCATALYTIC PROPERTY PLATINUM NANOPARTICLES METHANOL OXIDATION FACILE SYNTHESIS HOLLOW NANOCRYSTALS GOLD |
| ISSN号 | 1477-9226 |
| 通讯作者 | Yang, J |
| 英文摘要 | Heterogeneous Au-Pt nanostructures have been synthesized using a sacrificial template-based approach. Typically, monodispersed Au nanoparticles are prepared first, followed by Ag coating to form core-shell Au-Ag nanoparticles. Next, the galvanic replacement reaction between Ag shells and an aqueous H2PtCl6 solution, whose chemical reaction can be described as 4Ag + PtCl62- -> Pt + 4AgCl + 2Cl(-), is carried out at room temperature. Pure Ag shell is transformed into a shell made of Ag/Pt alloy by galvanic replacement. The AgCl formed simultaneously roughens the surface of alloy Ag-Pt shells, which can be manipulated to create a porous Pt surface for oxygen reduction reaction. Finally, Ag and AgCl are removed from core-shell Au-Ag/Pt nanoparticles using bis(p-sulfonatophenyl)phenylphosphane dihydrate dipotassium salt to produce heterogeneous Au-Pt nanostructures. The heterogeneous Au-Pt nanostructures have displayed superior catalytic activity towards oxygen reduction in direct methanol fuel cells because of the electronic coupling effect between the inner-placed Au core and the Pt shell. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Chemistry, Inorganic & Nuclear |
| 研究领域[WOS] | Chemistry |
| 关键词[WOS] | PHASE-TRANSFER IDENTIFICATION ; CORE-SHELL STRUCTURES ; FUEL-CELL ; ELECTROCATALYTIC PROPERTY ; PLATINUM NANOPARTICLES ; METHANOL OXIDATION ; FACILE SYNTHESIS ; HOLLOW ; NANOCRYSTALS ; GOLD |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000300443000009 |
| 公开日期 | 2013-10-28 |
| 版本 | 出版稿 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/4301]  |
| 专题 | 过程工程研究所_湿法冶金清洁生产技术国家工程实验室 |
| 作者单位 | Chinese Acad Sci, Inst Proc Engn, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ye, Feng,Liu, Hui,Hu, Weiwei,et al. Heterogeneous Au-Pt nanostructures with enhanced catalytic activity toward oxygen reduction[J]. DALTON TRANSACTIONS,2012,41(10):2898-2903. |
| APA | Ye, Feng.,Liu, Hui.,Hu, Weiwei.,Zhong, Junyu.,Chen, Yingying.,...&Yang, Jun.(2012).Heterogeneous Au-Pt nanostructures with enhanced catalytic activity toward oxygen reduction.DALTON TRANSACTIONS,41(10),2898-2903. |
| MLA | Ye, Feng,et al."Heterogeneous Au-Pt nanostructures with enhanced catalytic activity toward oxygen reduction".DALTON TRANSACTIONS 41.10(2012):2898-2903. |
入库方式： OAI收割
来源：过程工程研究所
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