期刊文献+

纳米结构的钯与金-钯薄膜的制备及其电催化活性 被引量:3

Preparation and Catalytic Activity of Nanostructured Pd and Au-Pd Thin Films
下载PDF
导出
摘要 应用电位扫描法将Pd(II)离子沉积到玻碳电极表面,形成纳米结构的金属钯薄膜电极.然后在酸性溶液中控制适当的阴极电位,使该薄膜电极的钯吸收足量的活性氢,进而以吸收的氢作还原剂将Au(III)离子还原,制得Au-Pd双金属薄膜电极.扫描电镜、循环伏安法等测试表明,该电极Au-Pd沉积层对乙醇的氧化具有很高的电催化活性. The nanostructured Pd thin films were directly formed on the glassy carbon electrode (GCE) substrates by using potential cycling method. The as-prepared Pd thin films deposited onto the GCE were able to absorb enough amount of hydrogen in acidic solutions at the cathodic potentials more negative than the hydrogen evolution potential. Moreover, the absorbed hydrogen could be used as the reducing agent to reduce gold(Ⅲ) ions to Au nanoclusters, thereby forming bimetallic Au-Pd thin films on the GCE substrate. SEM and cyclic voltammetry characterization demonstrated that the Au-Pd thin films display much higher catalytic activity towards the electro-oxidation of ethanol than the pure Pd thin films.
出处 《电化学》 CAS CSCD 北大核心 2008年第2期170-174,共5页 Journal of Electrochemistry
基金 国家自然科学基金(20573068 20673067)资助
关键词 循环伏安法 乙醇 电催化 gold palladium cyclic voltammetry ethanol electro-oxidation
  • 相关文献

参考文献2

二级参考文献15

  • 1黄红良,隋静,陈红雨,李伟善.国内外直接甲醇燃料电池研究进展[J].电池工业,2004,9(6):320-324. 被引量:8
  • 2DUBAU L,HAHN F,COUTANCEAU C,et al.On the structure effects of bimetallic PtRu electrocatalysts towards methanol oxidation[J].J Electroanal Chem,2003,(8):407-415.
  • 3DESAI S,NEUROCK M.A first principles analysis of CO oxidation over Pt and Pt66.7%Ru33.3%(111) surfaces[J].Electrochim Acta,2003,(48):3 759-3 773.
  • 4CHEN W X,ZHAO J,LEE J Y,et al.Microwave heated polyol synthesis of carbon nanotubes supported Pt nanoparticles for methanol electrooxidation[J].Mater Chem Phys,2005,(91):124-129.
  • 5CHOI J H,PARK K W,LEE H K,et al.Nano-composite of PtRu alloy electrocatalyst and electronically conducting polymer for use as the anode in a direct methanol fuel cell[J].Electrochim Acta,2003,(48):2 781-2 789.
  • 6KUA J,GODDARD W A.Oxidation of methanol on 2nd and 3rd row group Ⅶ transition metals (Pt,Ir,Pd,Rh and Ru):application to direct methanol fuel cells[J].J Am Chem Soc,1999,121(47):10 928-10 941.
  • 7KAWAGUCHI T,SUGIMOTO W,MURAKAMI Y,et al.Temperature dependence of the oxidation of carbon monoxide on carbon supported Pt,Ru,and PtRu[J].Electrochem Commun,2004,(6):480-483.
  • 8DEIVARAJ T C,LEE J Y.Preparation of carbon-supported PtRu nanoparticles for direct methanol fuel cell applications-a comparative study[J].J Power Sources 2005,(142):43-49.
  • 9DINH H N,REN X M,GARZON F H,et al.Electrocatalysis in direct methanol fuel cells:in-situ probing of PtRu anode catalyst surfaces[J].J Electroanal Chem,2000,(419):222-233.
  • 10TAKASU Y,KAWAGUCHI T,SUGIMOTO W,et al.Effects of the surface area of carbon support on the characteristics of highly-dispersed Pt/Ru particles as catalysts for methanol oxidation[J].Electrochim Acta,2003,(48):3 861-3 868.

共引文献26

同被引文献54

  • 1胡风平,沈培康.乙醇在碳修饰的二氧化钛纳米管负载的钯电催化剂上的催化氧化[J].催化学报,2007,28(1):80-84. 被引量:12
  • 2高风仙,袁若,柴雅琴,张凌燕,陈时洪,黎雪莲,王娜.基于聚硫堇和纳米金共修饰的过氧化氢生物传感器的研究[J].分析测试学报,2007,26(1):81-84. 被引量:19
  • 3TSIONSKY M,GUN G,GLEZER V,et al.Sol-gel derived ceramic carbon composite electrodes:introduction and scope of applications[J].Anal Chem,1994,66(10):1747-1753.
  • 4CORDUNEANU O,DICULESCU V C,CHIORCEA-PAQUIM A M,et al.Shape controlled palladium nanowires and nanoparticles electrodeposited on carbon electrodes[J].J Electroanal Chem,2008,624(1/2):97-108.
  • 5WHITE S F,TURNER A P F,SCHMID R D.Investigations of platinized and rhodinized carbon electrodes for use in glucose sensors[J].Electroanalysis,1994,6(8):625-632.
  • 6FANG Cheng,FAN Yi,KONG Jinming,et al.DNA-templated preparation of palladium nanoparticles and their application[J].Sens Actuators:B,2007,126(2):684-690.
  • 7YANG C C,KUMAR A S,ZEN J M.Electrocatalytic reduction and determination of dissolved oxygen at a preanodized screen-printed carbon electrode modified with palladium nanoparticles[J].Electroanalysis,2006,18(1):64-69.
  • 8WANG Baoxing,LI Xiaoyuan.Electrocatalytic properties of nitrous oxide and its voltammetric detection at palladium electrodeposited on a glassy carbon electrode[J].Anal Chem,1998,70(10):2181-2187.
  • 9Decher, Fuzzy G. Science[J]. 1997, 277:1232.
  • 10Pastoriza-Santos I, Koktysh D S, Mamedov A A et al. Langmuir[J]. 2000, 16:2731.

引证文献3

二级引证文献9

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部