title: Imidazolium Ionic Liquid Functionalized Carbon Nanotubes for Improved Interfacial Charge Transfer and Simultaneous Determination of Dihydroxybenzene Isomers.
abstract: In this paper; an imidazolium ionic liquid (IL) is used to functionalize multi-walled carbon nanotubes (MWNTs) by covalent bonding on the MWNT surface. The functionalization not only provides a hydrophilic surface for ion accessibility but also prevents the aggregation of MWNTs. The IL-functionalized MWNTs were then applied for the electrochemical determination of the dihydroxybenzene isomers hydroquinone (HQ); catechol (CC); and resorcinol (RC), exhibiting excellent recognition ability towards the three compounds. The linear calibration ranges for HQ; CC and RC are 0.9-150 μM; 0.9-150 μM and 1.9-145 μM and the detection limits are found to be 0.15 μM for HQ; 0.10 μM for CC and 0.38 μM for RC based on S/N of 3. The proposed electrochemical sensor was also found to be useful for the determination of the dihydroxybenzene isomers in Yellow River water with reliable recovery.
authors.affiliation: Chongqing Key Laboratory for Advanced Materials &amp; Technologies of Clean Energies, Southwest University, Chongqing 400715, China. weihuannwnu@163.com.|Faculty of Materials &amp; Energy, Southwest University, Chongqing 400715, China. weihuannwnu@163.com.
authors.forename: Huan
authors.initials: H
authors.lastname: Wei
authors.affiliation: Chongqing Key Laboratory for Advanced Materials &amp; Technologies of Clean Energies, Southwest University, Chongqing 400715, China. wuxiaoshuai@163.com.|Faculty of Materials &amp; Energy, Southwest University, Chongqing 400715, China. wuxiaoshuai@163.com.
authors.forename: Xiao-Shuai
authors.initials: XS
authors.lastname: Wu
authors.affiliation: Chongqing Key Laboratory for Advanced Materials &amp; Technologies of Clean Energies, Southwest University, Chongqing 400715, China. wenguoyun1027@126.com.|Faculty of Materials &amp; Energy, Southwest University, Chongqing 400715, China. wenguoyun1027@126.com.
authors.forename: Guo-Yun
authors.initials: GY
authors.lastname: Wen
authors.affiliation: Chongqing Key Laboratory for Advanced Materials &amp; Technologies of Clean Energies, Southwest University, Chongqing 400715, China. yanqiao@swu.edu.cn.|Faculty of Materials &amp; Energy, Southwest University, Chongqing 400715, China. yanqiao@swu.edu.cn.
authors.forename: Yan
authors.initials: Y
authors.lastname: Qiao
mesh_terms: D001555:Benzene Derivatives / Q000032:analysis* / Q000737:chemistry; D007093:Imidazoles / Q000737:chemistry*; D052578:Ionic Liquids / Q000737:chemistry*; D007536:Isomerism; D037742:Nanotubes, Carbon / Q000737:chemistry*; D010084:Oxidation-Reduction; D017550:Spectroscopy, Fourier Transform Infrared; D013059:Spectrum Analysis, Raman
chemical_list: D001555:Benzene Derivatives; D007093:Imidazoles; D052578:Ionic Liquids; D037742:Nanotubes, Carbon
keywords: carbon nanotube; dihydroxybenzene isomers; ionic liquids; simultaneous determination