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	(PtAuPt)_(HN)/GC的制备及对甲酸氧化的电催化性能; Preparation of (PtAuPt)_(HN)/GC and Its Electrocatalytic Performance for Formic Acid Oxidation
	商中瑾 ; 颜亮亮 ; 饶贵仕 ; 熊婷 ; 田伟 ; 林旋 ; 钟起玲 ; 任斌
	2014-12-10
关键词	铂-金-铂纳米空球 电极 电催化 甲酸氧化 Pt-Au-Pt hollow nanospheres Electrode Electrocatalysis Oxidation of formic acid
英文摘要	以SE溶胶为模板,合成了多层核壳结构的SE@PT@Au@PT实心纳米粒子;采用化学与电化学相结合的除硒方法制得了(PTAuPT)Hn/gC,并表征了(PTAuPT-SE)Hn的表面形貌、结构与组成;以甲酸为探针分子,比较了(PTAuPT)Hn/gC和PT/C/gC对甲酸氧化的电催化行为,发现(PTAuPT)Hn/gC催化甲酸氧化只有1个氧化峰,峰电位和峰电流分别约为0.35V和1.22MA/CM2,而PT/C/gC则有2个氧化峰,在0.35V时所对应的电流密度仅约为0.30MA/CM2,前者在该电位时的电流密度是后者的4倍;在0.30MA/CM2的电流密度下,(PTAuPT)Hn/gC对应的电极电位为0.01V,比PT/C/gC负移了340MV;在600S时的计时电流分别为0.06和0.02MA/CM2.(PTAuPT)Hn对甲酸氧化的电催化活性不但比PT/C高,而且具有一定的抗CO中毒性能.; Se@ Pt@ Au@ Pt multilayer core-shell nanoparticles were synthesized in bulk using selenium colloids as template.After removing the selenium template by chemical method,Pt-Au-Pt hollow nanospheres[( PtAuPt-Se)HN],which containing a small amount of residual selenium,were synthesized and used to modify GC electrode.After the residual selenium were removed from( PtAuPt-Se)HN/ GC by electrochemical method,( PtAuPt)HN/ GC was obtained.Scanning electron microscopy( SEM), transmission electron microscopy( TEM),energy dispersive X-ray spectrocopy( EDS) and X-ray diffraction( XRD) were used to characterize their surface morphologies,structures and compositions.The electrocatalytic oxidation activity of( PtAuPt)HN/ GC and Pt / C / GC were measured by using formic acid as a probe molecule.Cyclic voltammogram( CV) reveals that the current density of the formic acid oxidation on( PtAuPt)HN/ GC was four times as large as that of the latter when the potential was 0.35 V.The potential of( PtAuPt)HN/ GC was shifted negatively about 340 mV compared to the Pt / C / GC when the current density was 0.30 mA / cm2.The chronoamperometry of( PtAuPt)HN/ GC and Pt / C / GC was 0.06 and 0.02 mA / cm2 respectively after 600 s.The results show that the electrocatalytic activity of( PtAuPt)HNfor formic acid oxidation was significantly higher than that of Pt / C.; 国家自然科学基金(批准号:20663002); 厦门大学固体表面物理化学国家重点实验室基金(批准号:200511)资助~~
语种	zh_CN
内容类型	期刊论文
源URL	[http://dspace.xmu.edu.cn/handle/2288/106915]
专题	化学化工－已发表论文
推荐引用方式 GB/T 7714	商中瑾,颜亮亮,饶贵仕,等. (PtAuPt)_(HN)/GC的制备及对甲酸氧化的电催化性能, Preparation of (PtAuPt)_(HN)/GC and Its Electrocatalytic Performance for Formic Acid Oxidation[J],2014.
APA	商中瑾.,颜亮亮.,饶贵仕.,熊婷.,田伟.,...&任斌.(2014).(PtAuPt)_(HN)/GC的制备及对甲酸氧化的电催化性能..
MLA	商中瑾,et al."(PtAuPt)_(HN)/GC的制备及对甲酸氧化的电催化性能".(2014).

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