Molecularly imprinted polymer based potentiometric sensor for the determination of 1-hexyl-3-methylimidazolium cation in aqueous solution

被引:7
作者
Zhuo, Kelei [1 ]
Ma, Xueli [1 ]
Chen, Yujuan [1 ]
Wang, Congyue [1 ]
Li, Aoqi [1 ]
Yan, Changling [1 ]
机构
[1] Henan Normal Univ, Sch Chem & Chem Engn, Collaborat Innovat Ctr Henan Prov Green Mfg Fine, Key Lab Green Chem Media & React,Minist Educ, Xinxiang 453007, Henan, Peoples R China
基金
中国国家自然科学基金;
关键词
Ionic liquid; Molecularly imprinted polymer; PVC membrane; Ion-selective electrode; ION-SELECTIVE ELECTRODES; CARBON-PASTE ELECTRODE; LIQUIDS; TOXICITY; IMIDAZOLIUM; SOLVENTS; CHLORIDE;
D O I
10.1007/s11581-016-1708-z
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
The molecular imprinting technique is powerful to prepare functional materials with molecular recognition properties. In this work, a potentiometric sensor was fabricated by dispersing molecularly imprinted polymers (MIPs) into plasticized PVC matrix and used for the determination of 1-hexyl-3-methylimidazolium cation ([C(6)mim](+)) in aqueous solution. The MIPs were synthesized by precipitation polymerization using 1-hexyl-3-methylimidazolium chloride ([C(6)mim]Cl) as the template molecule, methacrylic acid (MAA) and ethylene glycol dimethacrylat (EGDMA) as the functional monomers, and EGDMA also as the cross-linking agent. The as-prepared electrode exhibited a Nernstian response (58.87 +/- 0.3 mV per decade) to [C(6)mim](+) in a concentration range from 1.0 x 10(-6) to 0.1 mol kg(-1) with a low detection limit of 2.8 x 10(-7) mol kg(-1), high selectivity, and little pH influence. The as-prepared electrode was used for the detection of the [C(6)mim](+) in distilled water, tap water, and river water with a good recovery. It was also successfully applied in the determination of mean activity coefficients of [C(6)mim]Br in fructose + water systems based on the potentiometric method at 298.15 K.
引用
收藏
页码:1947 / 1955
页数:9
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