Electrochemical deposition of Au-Pt alloy particles with cauliflower-like microstructures for electrocatalytic methanol oxidation
文献类型：期刊论文
| 作者 | Zhou F(周峰)
|
| 刊名 | International Journal Hydrogen Energy
 |
| 出版日期 | 2012 |
| 卷号 | 37页码:4088-4097 |
| 关键词 | Electrochemical deposition Au-Pt alloys Cauliflower-like microstructures Methanol electro-oxidation Electronic effect |
| ISSN号 | 0360-3199 |
| 通讯作者 | 叶为春 ; 王春明 |
| 中文摘要 | Au-Pt alloy particles with cauliflower-like microstructures of varying Pt/Au ratios were electrodeposited on indium tin oxide (ITO) substrates by constant potential electrolysis at E ¼ 0.25 V. The results of X-ray diffraction and X-ray photoelectron spectroscopy confirm that the bimetallic alloys can be obtained for different Pt/Au ratios including 4/1, 1/1 and 1/4. The formation of alloyed cauliflower-like microstructures may be the result of the fast formation of gold seeds as the core and subsequent simultaneous deposition of Au and Pt from cyclic voltammetric study. The effect of surface composition of AuePt alloy particles on electrocatalytic methanol oxidation were investigated in H2SO4 solution. The electrocatalytic abilities including electrochemical surface area, peak current density and the turnover number of methanol oxidation follow the order of Pt4Au1 > Pt > Pt1Au1. The results can be ascribed to that electronic effect may be prominent while bifunctional effect is insignificant for AuePt alloy systems because the electrocatalytic activity of Au is negligible in acidic media. Additionally, the Pt4Au1 electrode has superior kinetics of methanol electro-oxidation than monometallic Pt electrode by calculating the electron transfer coefficient (a). |
| 学科主题 | 材料科学与物理化学 |
| 收录类别 | SCI |
| 资助信息 | the Natural Science Foundation of Gansu Province, China (No. 1107RJZA261);the Fundamental Research Funds for the Central Universities (No.lzujbky-2011-25) |
| 语种 | 英语 |
| 公开日期 | 2013-07-12 |
| 源URL | [http://210.77.64.217/handle/362003/3342]  |
| 专题 | 兰州化学物理研究所_固体润滑国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Zhou F. Electrochemical deposition of Au-Pt alloy particles with cauliflower-like microstructures for electrocatalytic methanol oxidation[J]. International Journal Hydrogen Energy,2012,37:4088-4097. |
| APA | 周峰.(2012).Electrochemical deposition of Au-Pt alloy particles with cauliflower-like microstructures for electrocatalytic methanol oxidation.International Journal Hydrogen Energy,37,4088-4097. |
| MLA | 周峰."Electrochemical deposition of Au-Pt alloy particles with cauliflower-like microstructures for electrocatalytic methanol oxidation".International Journal Hydrogen Energy 37(2012):4088-4097. |
入库方式： OAI收割
来源：兰州化学物理研究所
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