An iron(III)-containing ionic liquid: characterization, magnetic property and electrocatalysis

被引:0
|
作者
Ke Fei Wang
Lan Zhang
Rui Rui Zhuang
Fang Fang Jian
机构
[1] Qingdao University of Science and Technology,New Materials and Function Coordination Chemistry Laboratory
[2] Luoyang Institute of Science and Technology,Department of Environmental Engineering and Chemistry
来源
Transition Metal Chemistry | 2011年 / 36卷
关键词
Ionic Liquid; Benzimidazolium; Bromate; Cathodic Peak Potential; Benzimidazole Ring;
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中图分类号
学科分类号
摘要
The present work reports on the synthesis, characterization and performance of a new iron(III)-containing ionic liquid [(C4H9)2-bim][FeCl4] (Fe-IL, bim = benzimidazolium) as an electrocatalyst for nitrite and bromate reduction. The melting point of Fe-IL is 70 °C. Thermal behavior of the Fe-IL was studied by differential scanning calorimetry and thermalgravimetry. The value of magnetic moment and its temperature dependence were measured. A conductive carbon paste electrode (Fe-IL/CPE) comprised of Fe-IL and carbon powder was fabricated by the direct mixing method. The Fe-IL has double functions—a binder and an electrocatalyst. The electrochemical behavior and electrocatalysis of Fe-IL/CPE have been studied by cyclic voltammetry. The Fe-IL/CPE shows excellent electrocatalytic activities toward nitrite and bromate reduction. The detection limit and the sensitivity are 0.01 μM and 100.58 μA μM−1 for nitrite, and 0.01 μM and 83.11 μA μM−1 for bromate detection, respectively. This work demonstrates that the Fe-IL may become a new kind of functional material in constructing chemicals and biosensors.
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页码:785 / 791
页数:6
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