中华医学超声杂志

应用化学 ›› 2011, Vol. 28 ›› Issue (09): 1052-1057.DOI: 10.3724/SP.J.1095.2011.00602

• 研究论文 • 上一篇    下一篇

聚邻氨基苯甲酸-铜复合薄膜修饰电极的制备及其电化学性能

刘玉堂*,潘科学,刘承斌   

  1. (湖南大学化学化工学院 长沙 410082)
  • 收稿日期:2010-10-11 修回日期:2010-11-17 出版日期:2011-09-10 发布日期:2011-09-10
  • 通讯作者: 刘玉堂，副研究员; Tel/Fax:0731-88822499; E-mail:liuyutang@126.com; 研究方向：高分子复合材料，环境功能材料
  • 基金资助:
    湖南省自然科学基金资助项目(10JJ5051)；湖南省科技计划资助项目(2010WK3033)

Preparation of Poly(anthranilic acid)-Copper Particles Modified Electrode and Its Electrochemical Preparation of Poly(anthranilic acid)-Copper Composite Modified Electrode and Its Electrochemical Properties

LIU Yutang*, PAN Kexue, LIU Chengbin   

  1. (College of Chemistry and Chemical Engineering,Hunan University,Changsha 410082)
  • Received:2010-10-11 Revised:2010-11-17 Published:2011-09-10 Online:2011-09-10

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摘要：

利用聚合物官能团对金属离子的配位作用，在电极表面原位制备了金属粒子。 首先在玻碳电极（GCE）表面电沉积聚邻氨基苯甲酸(PoABA)，再化学吸附铜离子(Cu2+),用水合肼还原得到单质铜(Cu0)。 采用扫描电子显微镜和能谱分析表征了聚邻氨基苯甲酸铜(PoABA-Cu0)复合薄膜的表面形貌和元素构成，研究了PoABA-Cu0修饰电极的电化学性能，并以其检测了过氧化氢（H2O2）。 结果表明，电极表面被修饰上了一层PoABA-Cu0复合薄膜；制备的修饰电极对H2O2具有良好的电催化性能，在邻氨基苯甲酸的聚合圈数为10、Cu2+的吸附时间为10 min、工作电压为-0.3 V时，该修饰电极对H2O2表现出了最佳的检测性能，其线性浓度范围为5.0×10-5～1.0×10-2 mol/L，灵敏度为96.3 μA·L/(mmol·cm)，检测限为5.0×10-5 mol/L，且具有较好的稳定性。

关键词: 聚邻氨基苯甲酸, 铜粒子, 玻碳修饰电极, 过氧化氢

Abstract:

The complexation of functional groups of polymers to metal ions was exploited to in situ prepare metal particles on the electrode surface. Poly(anthranilic acid)(PoABA) was first electrodeposited onto a glassy carbon electrode（GCE）. Then copper ions(Cu2+) were chemically adsorbed within the PoABA film, and subsequently reduced by hydrazine hydrate forming copper particles(Cu0). The surface morphology and element composition of PoABA-Cu0 composite film was characterized by scanning electron microscopy and energy-dispersive X-ray ananlysis. The electrochemical properties of the PoABA-Cu0 modified electrode and its application for the detection of H2O2 were studied. The results show that there are well-distributed Cu particles in the PoABA film; the modified electrode exhibits well performance toward H2O2 electrocatalysis. When the number of potential scans for the polymerization of o-aminobenzoic acid is 10, the adsorption time of Cu2+ is 10 min, and the working voltage is -0.3 V, the PoABA-Cu0 modified electrode displays the best electroananlytic performance toward H2O2, where the linear H2O2 concentration range is 5.0×10-5～1.0×10-2 mol/L, the sensitivity is 96.34 μA·L/(mmol·cm), and the detection limit is 5.0×10-5 mol/L. Moreover, the sensing electrode shows a relatively good stability.

Key words: PoABA, Cu, modified glassy carbon electrode, hydrogen peroxide

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