Efficient Precipitation of Dyes from Dilute Aqueous Solutions of Ionic Liquids

ALI Maroof, SARKAR Abhra, PANDEY Mrituanjay D., PANDEY Siddharth

doi:10.2116/analsci.22.1051

Efficient Precipitation of Dyes from Dilute Aqueous Solutions of Ionic Liquids

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ALI Maroof

Department of Chemistry, Indian Institute of Technology Delhi
SARKAR Abhra

Department of Chemistry, Indian Institute of Technology Delhi
PANDEY Mrituanjay D.

Department of Chemistry, Indian Institute of Technology Delhi
PANDEY Siddharth

Department of Chemistry, Indian Institute of Technology Delhi

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The addition of only ∼1.7 wt% (∼0.06 M) ionic liquid 1-butyl-3-methylimidazolium hexafluorophosphate to aqueous solutions of six popular cationic dyes resulted in the precipitation of almost all of the dye from the solution.