Premium
Optical and Bioelectrochemical Characterization of Water‐Miscible Ionic Liquids Based Composites of Multiwalled Carbon Nanotubes
Author(s) -
Tao Wenyan,
Pan Dawei,
Liu Qian,
Yao Shouzhuo,
Nie Zhou,
Han Buxing
Publication year - 2006
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.200603560
Subject(s) - ionic liquid , pyrolytic carbon , raman spectroscopy , tetrafluoroborate , materials science , dielectric spectroscopy , carbon nanotube , electrochemistry , conductivity , composite number , graphite , cyclic voltammetry , catalysis , chemical engineering , carbon fibers , inorganic chemistry , electrode , composite material , organic chemistry , chemistry , pyrolysis , physics , optics , engineering
Acidic treated multiwalled carbon nanotubes (AMWNTs) were ground with water‐miscible room temperature ionic liquids, 1‐butyl‐3‐methylimidazolium tetrafluoroborate ([bmim]BF 4 ), and resulted in AMWNTs‐[bmim]BF 4 composite. Its electrical‐ionic conductivity and optical properties were compared with the other two types of carbon materials‐[bmim]BF 4 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]BF 4 composite exhibits the highest conductivity. Raman spectra study exhibits that the [bmim]BF 4 can form gel with PMWNTs and AMWNTs but only form a viscous liquid with PGP. AMWNTs‐[bmim]BF 4 gel modified GC electrode was applied in direct electrochemistry of heme proteins (Hb and HRP) and it catalysis to the reduction of H 2 O 2 was investigated.