ICCAS OpenIR
Radiation-induced darkening of ionic liquid [C(4)mim][NTf2] and its decoloration
Yuan, Liyong1; Peng, Jing1; Xu, Ling1,2; Zhai, Maolin1; Li, Jiuqiang1; Wei, Genshuan1
2009-12-01
Source PublicationRADIATION PHYSICS AND CHEMISTRY
ISSN0969-806X
Volume78Issue:12Pages:1133-1136
AbstractThe radiation effect on a hydrophobic room-temperature ionic liquid (RTIL), 1-butyl-3-methylimidazolium bis[(trifluoromethyl)sulfonyl]imide ([C(4)mim][NTf2]), was studied by gamma-irradiation under nitrogen atmosphere. Accompanied by color darkening and increase of light absorbance in a wide wavelength range, a distinct absorption peak at around 290 nm for irradiated [C(4)mim][NTf2] appeared when acetonitrile was used as solvent, and the intensity of the peak enhanced with increasing dose. The spectrophotometric study on the irradiated RTILs containing 1,3-dialkylimidazolium cations associated with different inorganic anions revealed that the peak is ascribed to the radiolysis products of the [C(4)mim](+). And the wavelength of the peak was affected by alkyl chain length on imidazolium cation. while the intensity of the peak was influenced by anions. With incorporating a little amounts of oxidants, such as KMnO4 and HNO3 into irradiated [C(4)mim][NTf2], the intensity of the peak at 290 nm decreased obviously and the decoloration of [C(4)mim][NTf2] occurred, suggesting that the peak at 290 nm is assigned to the colored species and the species can be oxidized. (C) 2009 Elsevier Ltd. All rights reserved.
KeywordRadiation [c(4)Mim][Ntf2] Decoloration Oxidation
DOI10.1016/j.radphyschem.2009.07.003
Indexed BySCI ; ISTP
Language英语
WOS IDWOS:000271337100028
PublisherPERGAMON-ELSEVIER SCIENCE LTD
Citation statistics
Cited Times:34[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/67556
Collection中国科学院化学研究所
Corresponding AuthorZhai, Maolin
Affiliation1.Peking Univ, Beijing Natl Lab Mol Sci, Dept Appl Chem, Coll Chem & Mol Engn, Beijing 100871, Peoples R China
2.Peking Univ, Dept Energy & Resources Engn, Coll Engn, Beijing 100871, Peoples R China
Recommended Citation
GB/T 7714
Yuan, Liyong,Peng, Jing,Xu, Ling,et al. Radiation-induced darkening of ionic liquid [C(4)mim][NTf2] and its decoloration[J]. RADIATION PHYSICS AND CHEMISTRY,2009,78(12):1133-1136.
APA Yuan, Liyong,Peng, Jing,Xu, Ling,Zhai, Maolin,Li, Jiuqiang,&Wei, Genshuan.(2009).Radiation-induced darkening of ionic liquid [C(4)mim][NTf2] and its decoloration.RADIATION PHYSICS AND CHEMISTRY,78(12),1133-1136.
MLA Yuan, Liyong,et al."Radiation-induced darkening of ionic liquid [C(4)mim][NTf2] and its decoloration".RADIATION PHYSICS AND CHEMISTRY 78.12(2009):1133-1136.
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