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Wuhan University Journal of Natural Sciences

, Volume 24, Issue 5, pp 400–404 | Cite as

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

  • Qing Huang
  • Yang Hu
  • Jiakai Wang
  • Kai Jiang
  • Tian WuEmail author
Chemistry and Physics
  • 3 Downloads

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.

Key words

ionic liquids sulfur dioxide cyclic voltammetry chronoamperometric 

CLC number

O 646.7 

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Copyright information

© Wuhan University and Springer-Verlag GmbH Germany 2019

Authors and Affiliations

  • Qing Huang
    • 1
    • 2
  • Yang Hu
    • 3
  • Jiakai Wang
    • 4
  • Kai Jiang
    • 5
  • Tian Wu
    • 1
    • 2
    Email author
  1. 1.College of Chemistry and Life ScienceHubei University of EducationWuhan, HubeiChina
  2. 2.Institute of Materials Research and Engineering (IMRE)Hubei University of EducationWuhan, HubeiChina
  3. 3.College of Chemistry and Molecular SciencesWuhan UniversityWuhan, HubeiChina
  4. 4.School of Materials Science and EngineeringHubei UniversityWuhan, HubeiChina
  5. 5.School of Materials Science and EngineeringHuazhong University of Science and TechnologyWuhan, HubeiChina

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