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Electrocatalytic enhancement of methanol oxidation by adding CeO_2 nanoparticle on porous electrode 被引量：4

Electrocatalytic enhancement of methanol oxidation by adding CeO_2 nanoparticle on porous electrode
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摘要 The polyaniline/polysulfone（PAN/PSF） composite films were prepared by electropolymerization,and then CeO2-Pt particles were codeposited into this composite film to obtain the CeO2-Pt-modified polyaniline/polysulfone（CeO2-Pt/PAN/PSF） electrodes.Their morphol-ogy and chemical component were characterized by field emission scanning electron microscopy（FESEM） and energy dispersive X-ray spectroscopy（EDS）,respectively.The results showed that the composite film had bi-layer structure with asymmetrical pores,and platinum and cerium oxide particles were homogeneously dispersed in the modified film electrodes.The cyclic voltammetry（CV） and electrochemical impedance spectroscopy（EIS） techniques were applied to investigate the electrocatalytic activity of the Pt-CeO2/PAN/PSF electrodes.It was indicated that appropriate amount of CeO2 could enhance the catalytic activity of Pt for methanol electro-oxidation.Chronoamperometry（i-t） measurements revealed that the Pt-CeO2/PAN/PSF electrode was relatively endurable for intermediate production.In addition,different mix-ing amounts of Pt and CeO2 nanoparticles were also investigated in detail. The polyaniline/polysulfone（PAN/PSF） composite films were prepared by electropolymerization,and then CeO2-Pt particles were codeposited into this composite film to obtain the CeO2-Pt-modified polyaniline/polysulfone（CeO2-Pt/PAN/PSF） electrodes.Their morphol-ogy and chemical component were characterized by field emission scanning electron microscopy（FESEM） and energy dispersive X-ray spectroscopy（EDS）,respectively.The results showed that the composite film had bi-layer structure with asymmetrical pores,and platinum and cerium oxide particles were homogeneously dispersed in the modified film electrodes.The cyclic voltammetry（CV） and electrochemical impedance spectroscopy（EIS） techniques were applied to investigate the electrocatalytic activity of the Pt-CeO2/PAN/PSF electrodes.It was indicated that appropriate amount of CeO2 could enhance the catalytic activity of Pt for methanol electro-oxidation.Chronoamperometry（i-t） measurements revealed that the Pt-CeO2/PAN/PSF electrode was relatively endurable for intermediate production.In addition,different mix-ing amounts of Pt and CeO2 nanoparticles were also investigated in detail.
作者 FENG Xiaojuan SHI Yanlong ZHOU Huijuan 冯晓娟;石彦龙;周慧娟(College of Chemistry and Chemical Engineering,Hexi University,Zhangye 734000,China)
机构地区 College of Chemistry and Chemical Engineering
出处 《Journal of Rare Earths》 SCIE EI CAS CSCD 2012年第1期29-33,共5页 稀土学报（英文版）
基金 Project supported by the National Natural Science Foundation of China (20475077)
关键词 porous electrode electrocatalytic activity methanol oxidation rare earths porous electrode electrocatalytic activity methanol oxidation rare earths
分类号 TB383.1 [一般工业技术—材料科学与工程]
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参考文献24

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Journal of Rare Earths
2012年 第1期

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