A sensor based on graphitic mesoporous carbon/ionic liquids composite film for simultaneous determination of hydroquinone and catechol

被引:51
作者
Hong, Zhouqin
Zhou, Lihui
Li, Jinxia [1 ]
Tang, Jing
机构
[1] E China Univ Sci & Technol, Key Lab Adv Mat, Shanghai 200237, Peoples R China
基金
中国国家自然科学基金;
关键词
Graphitic mesoporous carbon; Ionic liquid; Hydroquinone; Catechol; SENSITIVE SIMULTANEOUS DETERMINATION; MACROPOROUS CARBON; MODIFIED ELECTRODE; ADSORPTION; NANOTUBES; NANOCOMPOSITE; ELECTROCATALYSIS; CHEMISTRY; POLYMERS; PHENOL;
D O I
10.1016/j.electacta.2013.07.177
中图分类号
O646 [电化学、电解、磁化学];
学科分类号
081704 ;
摘要
The graphitic mesoporous carbon (GMC) was synthesized by using SBA-15 as template and ionic liquid as a novel carbon source with the assistance of ferric nitrate. A homogeneous and stable conducting film could be formed with graphitic mesoporous carbon/1-butyl-3-methylimidazolium hexafluorophosphate (GMC/BMIMPF6) composite on the electrode surface, which was particularly useful for preparing modified electrode to determinate the hydroquinone (HQ) and catechol (CC). The cyclic voltammetry (CV) of GMC/BMIMPF6/GC electrode showed two couples of independent well-defined quasi-reversible redox peaks for HQ and CC. The peak current value of cathode was linear with the concentration of HQ in the range of 1 x 10(-7) to 5.0 x 10(-5) mol L-1 in the presence of 5 x 10(-5) mol L-1 CC and with the concentration of CC in the range of 1 x 10(-7) to 5.0 x 10(-5) mol L-1 in the presence of 5 x 10(-5) mol L-1 HQ with detection limits (S/N = 3) of 5 x 10(-8) mol L-1 (HQ) and 6 x 10(-8) mol L-1 (CC), respectively. (C) 2013 Elsevier Ltd. All rights reserved.
引用
收藏
页码:671 / 677
页数:7
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