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The Principle of Detect SO2 Concentration by Using the Electrochemical Method in Ionic Liquid

  • Chemistry and Physics
  • Published:
Wuhan University Journal of Natural Sciences

Abstract

The reduction of SO2 with different concentrations at a platinum microelectrode was investigated by cyclic voltammetry (CV) in 1-(butyl)-3-methylimidazolium hexafluorophosphate ([Bmim]PF6). We speculated that the reaction mechanism of reduction may form a macromolecular complex, and the higher the concentration of SO2, the larger the molecular weight of the complex. The higher the concentration of SO2, the greater the diffusion coefficient of SO2 in [Bmim]PF6. There is a good quadratic function relationship between the reduction peak current and SO2 concentrations in the range from 2% to 100%, which promises a kind of ionic liquid electrolyte for the detection of SO2 gas with a wide range of concentrations.

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Authors and Affiliations

  1. College of Chemistry and Life Science, Hubei University of Education, Wuhan, Hubei, 430205, China

    Qing Huang & Tian Wu

  2. Institute of Materials Research and Engineering (IMRE), Hubei University of Education, Wuhan, Hubei, 430205, China

    Qing Huang & Tian Wu

  3. College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei, 430072, China

    Yang Hu

  4. School of Materials Science and Engineering, Hubei University, Wuhan, Hubei, 430062, China

    Jiakai Wang

  5. School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan, Hubei, 430074, China

    Kai Jiang

Authors
  1. Qing Huang
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  2. Yang Hu
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  3. Jiakai Wang
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  4. Kai Jiang
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  5. Tian Wu
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Corresponding author

Correspondence to Tian Wu.

Additional information

Foundation item: Supported by the Natural Science Foundation of Hubei Province (2018CFC827) and College Outstanding Young Scientific and Technological Innovation Team of Hubei Province (T201620)

Biography: HUANG Qing, female, Lecturer, Ph. D., research direction: electrochemistry in ionic liquids.

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Huang, Q., Hu, Y., Wang, J. et al. The Principle of Detect SO2 Concentration by Using the Electrochemical Method in Ionic Liquid. Wuhan Univ. J. Nat. Sci. 24, 400–404 (2019). https://doi.org/10.1007/s11859-019-1412-8

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  • DOI: https://doi.org/10.1007/s11859-019-1412-8

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