| (NH_4)_(42)[Mo_(132)O_(372)(CH_3COO)_(30)(H_2O)_(72)]膜修饰电极的构筑和电化学性质的研究 |
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| 引用本文： | 钟惠萍,冯珍鸽,王力.(NH_4)_(42)[Mo_(132)O_(372)(CH_3COO)_(30)(H_2O)_(72)]膜修饰电极的构筑和电化学性质的研究[J].化学研究与应用,2010,22(3). |
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| 作者姓名： | 钟惠萍 冯珍鸽 王力 |
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| 作者单位： | 集美大学生物工程学院,福建,厦门,361021 |
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| 基金项目： | 国家自然科学基金项目资助 |
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| 摘 要： | 由于过渡金属替代的多金属氧酸盐(polyoxometalates)的催化、磁性、电化学等性质,越来越受到人们的关注~(1-7]).
目前世界上约有10亿人生活在缺碘地区,碘的缺乏严重影响人类健康.对食物、生物临床、环境及工业中碘含量检测很有实际意义.
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| 关 键 词： | 多金属氧酸盐 化学传感器 电化学性质 |
Study on the synthesis and electrochemical behaviors of (NH_4)_(42)[Mo_(132)O_(372)(CH_3COO)_(30)(H_2O)_(72)] films modified electrode |
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| Zhong Hui-ping,Feng Zhen-ge,Wang Li.Study on the synthesis and electrochemical behaviors of (NH_4)_(42)[Mo_(132)O_(372)(CH_3COO)_(30)(H_2O)_(72)] films modified electrode[J].Chemical Research and Application,2010,22(3). |
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| Authors: | Zhong Hui-ping Feng Zhen-ge Wang Li |
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| Abstract: | A polyoxometalate (NH_4)_(42)Mo_(132)O_(372)(CH_3 COO)_(30)(H_2O)_(72)] was synthesized by electrochemical method. The polyoxometalate film was gown on a glassy carbon by the electrodepositing method. Its electrochemical behaviors were studied by cyclic vohammetry and amperometry. This film electrode exhibited a high catalytic activity for iodate reduction. By determining the steady-state current of iodate with constant potential amperometry, the optimal detection potential was obtained, which was 0.2V. Amperometry revealed a good linear relationship between peak current and the concentration of iodate in the range of 1×10~(-6) and 2 × 10~(-4) mol/L and the detection limit of 5 × 10~(-7) mol/L. The diffusion coefficient of 4.45 × 10~(-7)cm~2/s for iodate was calculated. As a result,it is much promising for the polynxometalate film modified electrode to be used as an electrochemical sensor for detecting the reduction of iodate. |
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| Keywords: | polyoxometalate electrochemical sensor electrochemical behavior |
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