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Molecules 2016, 21(5), 617; doi:10.3390/molecules21050617

Imidazolium Ionic Liquid Functionalized Carbon Nanotubes for Improved Interfacial Charge Transfer and Simultaneous Determination of Dihydroxybenzene Isomers

1,2
,
1,2
,
1,2
and
1,2,*
1
Chongqing Key Laboratory for Advanced Materials & Technologies of Clean Energies, Southwest University, Chongqing 400715, China
2
Faculty of Materials & Energy, Southwest University, Chongqing 400715, China
*
Author to whom correspondence should be addressed.
Academic Editor: Saikat Talapatra
Received: 10 March 2016 / Revised: 21 April 2016 / Accepted: 5 May 2016 / Published: 14 May 2016
(This article belongs to the Special Issue Carbon Nanotubes: Advances and Applications)
View Full-Text   |   Download PDF [3986 KB, uploaded 14 May 2016]   |  

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. View Full-Text
Keywords: carbon nanotube; ionic liquids; dihydroxybenzene isomers; simultaneous determination carbon nanotube; ionic liquids; dihydroxybenzene isomers; simultaneous determination
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Wei, H.; Wu, X.-S.; Wen, G.-Y.; Qiao, Y. Imidazolium Ionic Liquid Functionalized Carbon Nanotubes for Improved Interfacial Charge Transfer and Simultaneous Determination of Dihydroxybenzene Isomers. Molecules 2016, 21, 617.

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