Abstract
We demonstrated a complete decomposition method for ionic liquids (ILs; organic cation part: butyl-methyl or ethyl-methyl imidazolium, and inorganic anion part: PF −6 , BF4 − or Br−) in aqueous media by combining a hydrothermal mineralization method with a photocatalytic decomposition (PD) method. As a result, the hydrothermal treatment with Ca(OH)2 mineralizer could effectively remove the inorganic anion part, such as PF6 − or BF4 − and the PD could decompose the organic cation part effectively. Therefore, the detoxification of ILs in aqueous media was accomplished by the present method.
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Acknowledgments
The authors would like to thank the Mitsubishi Chemical Group Science and Technology Research Center, Inc. for the precious contribution to experimental work.
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Itakura, T., Hirata, K., Aoki, M. et al. Decomposition and removal of ionic liquid in aqueous solution by hydrothermal and photocatalytic treatment. Environ Chem Lett 7, 343–345 (2009). https://doi.org/10.1007/s10311-008-0177-7
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DOI: https://doi.org/10.1007/s10311-008-0177-7