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Keywords:

  • dual tuning;
  • halogens;
  • ionic liquids;
  • sulfur;
  • SO2 capture
Thumbnail image of graphical abstract

You can have your cake and eat it too: A “dual-tuning” strategy for improving the capture of SO2 was developed by introducing electron-withdrawing sites on the anions to produce several kinds of functionalized ionic liquids. Those functionalized with a halogen group exhibited improved performance over their non-halogenated counterparts, leading to highly efficient and reversible capture.