Optical and bioelectrochemical characterization of water-miscible ionic liquids based composites of multiwalled carbon nanotubes

被引：30

作者：

Tao, Wenyan

Pan, Dawei

Liu, Qian

Yao, Shouzhuo ^{[1
]}

Nie, Zhou

Han, Buxing

机构：

[1] Hunan Univ, Coll Chem & Chem Engn, State Key Lab Chemobiosensing & Chemometr, Changsha 410082, Peoples R China

[2] Chinese Acad Sci, Inst Chem, Ctr Mol Sci, Beijing 100080, Peoples R China

来源：

ELECTROANALYSIS | 2006年 / 18卷 / 17期

关键词：

heme proteins; multiwalled carbon nanotubes; water-miscible ionic liquids; 1-butyl-3-methylimidazolium tetrafluoroborate; hydrogen peroxide;

D O I：

10.1002/elan.200603560

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Acidic treated multiwalled carbon nanotubes (AMWNTs) were ground with water-miscible room temperature ionic liquids, 1-butyl-3-methylimidazolium tetrafluoroborate ([bmim]BF4), and resulted in AMWNTs-[bmim]BF4 composite. Its electrical-ionic conductivity and optical properties were compared with the other two types of carbon materials-[bmim]BF4 composites: pyrolytic graphite powder (PGP), pristine multiwalled carbon nanotubes (PMWNTs), through the ac impedance technology and Raman spectroscopy. The impedance data show that AMWNTs-[bmim]BF4 composite exhibits the highest conductivity. Raman spectra study exhibits that the [bmim]BF4 can form gel with PMWNTs and AMWNTs but only form a viscous liquid with PGP. AMWNTs-[bmim]BF4 gel modified GC electrode was applied in direct electrochemistry of heme proteins (Hb and HRP) and it catalysis to the reduction of H2O2 was investigated.

引用

页码：1681 / 1688

页数：8

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