| Electrochemical deposition of Au-Pt alloy particles with cauliflower-like microstructures for electrocatalytic methanol oxidation | |
| Department | 固体润滑国家重点实验室 |
Ye WC(叶为春); Kou HH(寇欢欢); Liu QZ(刘钦泽); Yan JF(严俊峰); Zhou F(周峰) ; Wang CM(王春明)
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| 2012 | |
| Source Publication | International Journal Hydrogen Energy
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| ISSN | 0360-3199 |
| Volume | 37Pages:4088-4097 |
| Abstract | 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). |
| Keyword | Electrochemical Deposition Au-pt Alloys Cauliflower-like Microstructures Methanol Electro-oxidation Electronic Effect |
| Subject Area | 材料科学与物理化学 |
| Funding Organization | the Natural Science Foundation of Gansu Province, China (No. 1107RJZA261);the Fundamental Research Funds for the Central Universities (No.lzujbky-2011-25) |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | 材料表面与界面行为研究组 |
| Document Type | 期刊论文 |
| Identifier | http://ir.licp.cn/handle/362003/3342 |
| Collection | 固体润滑国家重点实验室（LSL） |
| Corresponding Author | Ye WC(叶为春); Wang CM(王春明) |
| Recommended Citation GB/T 7714 | Ye WC,Kou HH,Liu QZ,et al. 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 | 叶为春,寇欢欢,刘钦泽,严俊峰,周峰,&王春明.(2012).Electrochemical deposition of Au-Pt alloy particles with cauliflower-like microstructures for electrocatalytic methanol oxidation.International Journal Hydrogen Energy,37,4088-4097. |
| MLA | 叶为春,et al."Electrochemical deposition of Au-Pt alloy particles with cauliflower-like microstructures for electrocatalytic methanol oxidation".International Journal Hydrogen Energy 37(2012):4088-4097. |
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| 4088-4097.PDF（1475KB） | 开放获取 | License | View Application Full Text | |||
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