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学科主题: Electrochemistry ; Energy & Fuels
题名: Electrocatalytic Oxidation of Formic Acid at Pt Modified Electrodes: Substrate Effect of Unsintered Au Nano-Structure
作者: Zhou R.; Yue R.; Jiang F.; Du Y.; Yang P.; Wang C.; Xu J.
关键词: Electrocatalytic Oxidation ; Formic Acid ; Pt/Au Bimetallic Catalyst ; Stranski-Krastanov Mode ; Ultralow Pt Loading
刊名: FUEL CELLS
发表日期: 2012
DOI: 10.1002/fuce.201200033
卷: 12, 期:6, 页:971-977
收录类别: SCI
资助者: National Natural Science Foundation of China 20933007, 51073114, 51073074, 21173261, 50963002; Chinese Academy of Sciences 1029471301; Opening Project of Xinjiang Key Laboratory of Electronic Information Materials and Devices; Priority Academic Program Development of Jiangsu Higher Education Institutions
摘要: A Pt-modified Au catalyst featured with novel layered structures and ultra-low Pt loading has been designed and electrochemically fabricated on a glassy carbon (GC) electrode. SEM characterization suggests that as-formed Pt/Au/GC electrode grows in a StranskiKrastanov mode, resulting in a nearly ideal layered structure with Au at the inner layer and Pt at the outer layer. The electrocatalytic activity of the synthesized Pt/Au/GC electrode towards formic acid electrooxidation was studied, and comparative experiments with other modified electrodes (i.e., Pt/GC, Pt/Au, and Pt/Pt) were also conducted. As a result, the electrocatalytic activity of the outer-layered Pt depends significantly on the intrinsic properties of the substrates. The prepared Pt/Au/GC electrode with Au nanoparticles modified GC as the substrate shows remarkable catalytic activity for the formic acid oxidation, much higher than that of its counterparts, Pt/GC, Pt/Au, and Pt/Pt electrodes. Additionally, the measured electrochemical impedance spectra indicate that the charge-transfer resistance for formic acid electrooxidation on Pt/Au/GC electrode is smaller than that on other Pt modified electrodes.
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内容类型: 期刊论文
URI标识: http://ir.xjipc.cas.cn/handle/365002/2736
Appears in Collections:材料物理与化学研究室_期刊论文

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作者单位: Soochow Univ, Coll Chem Chem Engn & Mat Sci, Suzhou 215123, Peoples R China;Chinese Acad Sci, Xinjiang Tech Inst Phys & Chem, Urumqi 830011, Peoples R China;Jiangxi Sci & Technol Normal Univ, Jiangxi Key Lab Organ Chem, Nanchang 330013, Peoples R China

Recommended Citation:
Zhou R.,Yue R.,Jiang F.,et al. Electrocatalytic Oxidation of Formic Acid at Pt Modified Electrodes: Substrate Effect of Unsintered Au Nano-Structure[J]. FUEL CELLS,2012,12(6):971-977.
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文件名: electrocatalytic oxidation of formic acid at pt modified electrodes substrate effect of unsintered au nano-structure.pdf
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