PMID- 21802910
OWN - NLM
STAT- MEDLINE
DCOM- 20120105
LR  - 20161125
IS  - 1873-4367 (Electronic)
IS  - 0927-7765 (Linking)
VI  - 88
IP  - 1
DP  - 2011 Nov 1
TI  - A sensor based on the carbon nanotubes-ionic liquid composite for simultaneous 
      determination of hydroquinone and catechol.
PG  - 292-6
LID - 10.1016/j.colsurfb.2011.07.004 [doi]
AB  - MWNTs-IL-Gel/GCE, a glassy carbon electrode modified with multiwalled carbon 
      nanotubes (MWNTs) and ionic liquids (IL), was developed to serve as a sensor for 
      simultaneous determination of Hydroquinone (HQ) and catechol (CC) in this paper. 
      The modified GCE showed two well-defined redox waves for HQ and CC in both CV and 
      DPV with a peak potential separation of ca. 0.1 V, which was large enough for 
      simultaneous detection. The results revealed that the oxidation of HQ and CC with 
      the enhancement of the redox peak current and the decrease of the peak-to-peak 
      separation exhibit excellent electrocatalytic behaviors. A high sensitivity of 
      1.8x10(-7)M with detection limits of 6.7x10(-8)M and 6.0x10(-8)M (S/N=3) for HQ 
      and CC were obtained. Moreover, the constants of apparent electron transfer rate 
      of HQ and CC at MWNTs-IL-Gel/GCE were calculated as 7.402 s(-1) and 8.179 s(-1), 
      respectively, and the adsorption quantity of HQ and CC was 1.408x10(-6) mol 
      cm(-2) with chronocoulometry. The developed sensor can be applied to determinate 
      directly of HQ and CC in aqueous solution.
CI  - Copyright (c) 2011 Elsevier B.V. All rights reserved.
FAU - Bu, Caihong
AU  - Bu C
AD  - Key Laboratory Bioelectrochemistry & Enviromental Analysis of Gansu Province, 
      College of Chemistry & Chemical Engineering, Northwest Normal University, 
      Lanzhou, PR China.
FAU - Liu, Xiuhui
AU  - Liu X
FAU - Zhang, Yijun
AU  - Zhang Y
FAU - Li, Li
AU  - Li L
FAU - Zhou, Xibin
AU  - Zhou X
FAU - Lu, Xiaoquan
AU  - Lu X
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20110712
PL  - Netherlands
TA  - Colloids Surf B Biointerfaces
JT  - Colloids and surfaces. B, Biointerfaces
JID - 9315133
RN  - 0 (Catechols)
RN  - 0 (Hydroquinones)
RN  - 0 (Ionic Liquids)
RN  - 0 (Nanotubes, Carbon)
RN  - LF3AJ089DQ (catechol)
RN  - XV74C1N1AE (hydroquinone)
SB  - IM
MH  - Catechols/*analysis
MH  - Electrochemistry/methods
MH  - Hydroquinones/*analysis
MH  - Ionic Liquids/*chemistry
MH  - Nanocomposites/*chemistry
MH  - Nanotubes, Carbon/*chemistry
EDAT- 2011/08/02 06:00
MHDA- 2012/01/06 06:00
CRDT- 2011/08/02 06:00
PHST- 2011/02/24 00:00 [received]
PHST- 2011/06/29 00:00 [revised]
PHST- 2011/07/04 00:00 [accepted]
PHST- 2011/08/02 06:00 [entrez]
PHST- 2011/08/02 06:00 [pubmed]
PHST- 2012/01/06 06:00 [medline]
AID - S0927-7765(11)00395-X [pii]
AID - 10.1016/j.colsurfb.2011.07.004 [doi]
PST - ppublish
SO  - Colloids Surf B Biointerfaces. 2011 Nov 1;88(1):292-6. doi: 
      10.1016/j.colsurfb.2011.07.004. Epub 2011 Jul 12.