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碳纳米管沉积铂修饰电极的制备和分析应用 被引量：1

Preparation and analytical properties of a glassy carbon electrode modified with platinum-decorated carbon nanotubes.
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摘要 制作了碳纳米管沉积铂修饰玻碳电极(CNT-Pt/GCE),以半胱氨酸为样品研究了该修饰电极的分析性能.该电极在硫酸溶液中具有显著电催化氧化作用,当pH值小于2时,CNT-Pt/GCE在0.55V左右得到半胱氨酸的氧化峰,峰电位比Pt电极(0.7V)负移,而且峰电流密度明显增加,大约是Pt电极的3倍.研究了多种实验条件对峰电流的影响,并探讨了半胱氨酸在CNT-Pt/GCE上的催化氧化机理.结果表明,CNT-Pt/GCE具有优良的分析性能,有可能为提高电化学分析灵敏度做出贡献. A glassy carbon electrode modified with platinum-decorated carbon nanotubes (CNT-Pt/GCE) was prepared. The analytical properties of the electrode were studied in determining a sample of cysteine. The CNT-Pt/GCE showed highly catalytic activity for electro-oxidation in hydrogen sulfate solution (pH≤2). The peak potential is moved negatively from 0.7 V to 0.55 V comparing with a normal Pt electrode, and the peak current at CNT-Pt/GCE is three times of that at Pt electrode. The effect of experimental conditions on peak current was examined and the electrocatalytic oxidation mechanism of cysteine at CNT-Pt/GCE was explored. The CNT-Pt/GCE showed excellent analytical properties in the experiment. It is possible to improve the sensitivity in electroanalysis at CNT-Pt/GCE.
作者 朱玉奴 彭图治 李建平
机构地区 浙江大学化学系
出处 《浙江大学学报（理学版）》 CAS CSCD 2004年第3期300-305,共6页 Journal of Zhejiang University（Science Edition）
基金 国家自然科学基金资助项目(29975024) 国家自然科学基金资助项目(20275034) 浙江省科技计划项目(2003C21024).
关键词 碳纳米管 纳米铂 半胱氨酸 铂修饰电极 制备 nanoplatinum carbon nanotubes electroanalysis cysteine
分类号 O646.54 [理学—物理化学] TB383 [一般工业技术—材料科学与工程]
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参考文献18

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共引文献110

同被引文献13

  • 1朱玉奴,彭图治,李建平.碳纳米管负载纳米铂修饰电极及电催化氧化H_2O_2的研究[J].高等学校化学学报,2004,25(9):1637-1641. 被引量：21
  • 2王广凤,李茂国,阚显文,高迎春,方宾.纳米银/半胱氨酸修饰金电极的制备及对苯二酚的测定[J].应用化学,2005,22(2):168-171. 被引量：17
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浙江大学学报（理学版）
2004年 第3期

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