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A novel hydrogen peroxide sensor based on multiwalled carbon nanotubes/poly(pyrocatechol violet)‐modified glassy carbon electrode
Author(s) -
Fang Bin,
Zhang Na,
Zhang Wei,
Gu Aixia,
Wang Guangfeng
Publication year - 2009
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.29929
Subject(s) - materials science , hydrogen peroxide , cyclic voltammetry , carbon nanotube , electrochemistry , electrode , electrochemical gas sensor , detection limit , catalysis , chemical engineering , nuclear chemistry , nanotechnology , chemistry , organic chemistry , chromatography , engineering
In this work, a new hydrogen peroxide (H 2 O 2 ) sensor was reported based on electropolymerizing pyrocatechol violet (PCV) on a glassy carbon electrode modified with multiwalled carbon nanotubes (MWCNTs). The modified electrode was characterized by cyclic voltammetry (CV) and scanning electron micrography. The result of electrochemical experiments showed a favorable catalytic activity toward the reduction of H 2 O 2 at −0.4 V with a linear response range from 2.0 μ M to 2.4 m M and a detection limit of 0.7 μ M (at a S / N = 3). The well catalytic activity of proposed sensor could be attributed to the poly‐PCV/MWCNTs composite film on the electrocatalytic reduction of H 2 O 2 . In addition, the sensor also exhibited a high sensitivity, good stability, and reproducibility. © 2009 Wiley Periodicals, Inc. J Appl Polym Sci, 2009