Premium
One‐Step Electrodeposited Carbon Nanotube/Zirconia/Myoglobin Film for Direct Electron Transfer and Electrocatalysis
Author(s) -
Qu Song,
Pei SuPeng,
Zhou ShiLin,
Gu YingYing
Publication year - 2009
Publication title -
journal of the chinese chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.329
H-Index - 45
eISSN - 2192-6549
pISSN - 0009-4536
DOI - 10.1002/jccs.200900121
Subject(s) - myoglobin , chemistry , electron transfer , detection limit , electrocatalyst , carbon nanotube , biosensor , electrode , electrochemistry , cubic zirconia , linear range , nanotechnology , nanotube , chemical engineering , materials science , organic chemistry , chromatography , ceramic , biochemistry , engineering
A nanobiocomposite film consisted of zirconia, multiwalled carbon nanotubes (MWNTs) and Myoglobin (Mb) was electrochemically deposited on the electrode. Direct electron transfer for the immobilized Mb was realized and high electrocatalytic efficiency toward H 2 O 2 was observed. The proposed biosensor via a simple one‐step electrodeposition method displayed a broader linear range and a lower detection limit for H 2 O 2 , as compared with those CNT or ZrO 2 based biosensor. The linear range is from 2 × 10 −6 M to 1 × 10 −3 M with the detection limit of 6 × 10 −7 M. The present strategy provides a simple and effective method to assemble CNT, ZrO 2 and enzyme nanohybrid on the electrode and expands the scope of CNT‐based electrochemical devices.