An iron(III)-containing ionic liquid: characterization,magnetic property and electrocatalysis |
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| Authors: | Ke Fei Wang Lan Zhang Rui Rui Zhuang Fang Fang Jian |
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| Institution: | (1) New Materials and Function Coordination Chemistry Laboratory, Qingdao University of Science and Technology, Qingdao, 266042, Shandong, People’s Republic of China;(2) Department of Environmental Engineering and Chemistry, Luoyang Institute of Science and Technology, Luoyang, 471023, Henan Province, People’s Republic of China; |
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| Abstract: | 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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