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化学学报
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化学学报 ›› 2011, Vol. 69 ›› Issue (13): 1575-1581. 上一篇    下一篇

研究论文

含氧酸根及4-硝基苯酚在氧化钨/聚苯胺修饰电极上的电催化还原

邹本雪1,2, 边立君1, 王岩2, 李欣洁1, 刘晓霞*,1   

  1. (1东北大学化学系中国-爱尔兰功能材料与传感器研究中心 沈阳 110819)
    (2辽东学院化学工程系 丹东 118000)
  • 投稿日期:2010-12-10 修回日期:2011-02-16 发布日期:2011-03-18
  • 通讯作者: 刘晓霞 E-mail:xxliu@mail.neu.edu.cn
  • 基金资助:

    基于有机-无机原位电化学杂化的聚苯胺一维生长控制及传感性能研究

Electrocatalytic Reduction of Bromate, Chlorate, Nitrite and 4-Nitrophenol at WO3/PANI Modified Electrode

Zou Benxue1,2; Bian Lijun1; Wang Yan2; Li Xinjie1; Liu Xiaoxia*,1   

  1. (1 China-Ireland Center for Advanced Materials and Sensor Development, Department of Chemistry, Northeastern University, Shenyang 110819)
    (2 Department of Chemical Engineering, Liaodong University, Dandong 118000)
  • Received:2010-12-10 Revised:2011-02-16 Published:2011-03-18

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被引次数

1

采用循环伏安(CV)、方波脉冲伏安(SWV)和计时电流(CA)技术研究了含氧酸根离子 , , 和4-硝基苯酚(4-NP)在WO3/PANI修饰电极上的电催化还原. 实验结果表明, WO3/PANI对 , , 以及4-NP电化学还原都具有良好的催化活性. 恒电位时, WO3/PANI对相应底物有快速的电流响应, 在40 mmol/L～1.2 mmol/L ( ), 0.12～20 mmol/L ( ), 40 mmol/L～2.50 mmol/L ( ), 50～400 mmol/L (4-NP)浓度范围内, 响应电流与底物浓度呈线性关系, 检测灵敏度及检测限(S/N＝3)分别为0.202 mA/(mmol/L), 4.8 mmol/L ( )|0.035 mA/(mmol/L), 23 mmol/L ( )|0.120 mA/(mmol/L), 5.9 mmol/L ( )|0.443 mA/(mmol/L), 8.8 mmol/L (4-NP).

关键词: 三氧化钨, 聚苯胺, 电化学催化, 溴酸根离子, 氯酸根离子, 亚硝酸离子, 4-硝基苯酚

Cyclic voltammetry (CV), chronoamperometry (CA) and square wave voltammetry (SWV) were used to investigate electrocatalytic reductions of , , and 4-nitrophenol on carbon cloth modified by composite film of tungsten oxide (WO3) and polyaniline (PANI). Results of amperometric experiments on WO3/PANI modified electrode revealed good linear relationship between response currents of the electrode and concentration of , , and 4-nitrophenol in the range of 40 mmol/L～1.2 mmol/L, 0.12～20 mmol/L, 40 mmol/L～2.50 mmol/L and 50～400 mmol/L, respectively. The sensitivity and the detection limit (S/N＝3) for these species are 0.202 mA/(mmol/L), 4.8 mmol/L ( )|0.035 mA/(mmol/L), 23 mmol/L ( )|0.120 mA/(mmol/L), 5.9 mmol/L ( ) and 0.443 mA/(mmol/L), 8.8 mmol/L (4-nitrophenol).

Key words: tungsten oxide, polyaniline, electrocatalytic reduction, bromate, chlorate, nitrite, 4-nitrophenol