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Issue 14, 2014
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α-Radiolysis of ionic liquid irradiated with helium ion beam and the influence of radiolytic products on Dy3+ extraction

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Abstract

Helium ion (He+) beam produced by a heavy ion linear accelerator was used to simulate α-rays for studying the radiation effect on 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ionic liquid ([C4mim][NTf2]). The water-soluble radiolytic products of [C4mim][NTf2] under He+ beam irradiation were analysed, and it was found that they were similar to those by γ-ray irradiation, but their amount was much less than that by γ-ray irradiation, which was attributed to the recombination of [C4mim][NTf2] radical cations in track by high linear energy transfer (LET) radiations of the He+ beam. The extracting behaviour of Dy3+ using irradiated [C4mim][NTf2] in combination with alkylated bis-triazinyl-pyridine (CA-BTP) was assessed, and found that the influence of He+ beam on the extraction was less than that of γ-ray irradiation. In addition, radiolytic products have a different influence on Dy3+ extraction at different doses; Dy3+ partitioning decreases at 50 kGy due to the protonation of CA-BTP and the inhibition of cation exchange mechanism by radiation-formed hydrogen ions. The abnormal increase of Dy3+ partitioning at 100 kGy is mainly attributed to the precipitation formed between Dy3+ and radiolytic products (F and SO32−).

Graphical abstract: α-Radiolysis of ionic liquid irradiated with helium ion beam and the influence of radiolytic products on Dy3+ extraction

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Publication details

The article was received on 22 Nov 2013, accepted on 13 Jan 2014 and first published on 13 Jan 2014


Article type: Paper
DOI: 10.1039/C3DT53297F
Citation: Dalton Trans., 2014,43, 5580-5585
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    α-Radiolysis of ionic liquid irradiated with helium ion beam and the influence of radiolytic products on Dy3+ extraction

    Y. Ao, H. Zhou, W. Yuan, S. Wang, J. Peng, M. Zhai, J. Wang, Z. Zhao, L. Zhao and Y. Wei, Dalton Trans., 2014, 43, 5580
    DOI: 10.1039/C3DT53297F

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