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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 30, Number 12
BKCSDE 30(12)
December 20, 2009 

Determination of Hydrogen Peroxide on Modified Glassy Carbon Electrode by Polytetrakis(2-aminophenyl)porphyrin Nanowire
Haesang Jeong, Songmi Kim, Heejin Seol, Jung Min You, Eun Seon Jeong, Seul Ki Kim, Kyung Sik Seo, Seungwon Jeon*
Porphyrin nanowire, Single-walled carbon nanotubes, Hydrogen peroxide, Electrochemical sensor, Amperometry
Nanowires of polytetrakis(o-aminophenyl)porphyrin (PTAPPNW) were fabricated by electrochemical polymerization with the cyclic voltammetric method in anodic aluminum oxide (AAO) membranes. The glassy carbon electrode (GCE) modified by PTAPPNW, single-walled carbon nanotubes (SWNT) and Nafion as a binder was investigated with voltammetric methods in a phosphate buffer saline (PBS) solution at pH 7.4. The PTAPPNW + SWNT + Nafion/GCE exhibited strongly enhanced voltammetric and amperometric sensitivity towards hydrogen peroxide (H2O2), which shortened the response time and enhanced the sensitivity for H2O2 determination at an applied potential of 0.0 V by amperometric method. The PTAPPNW + SWNT + Nafion/GCE can be used to monitor H2O2 at very low concentrations in biological pH as an efficient electrochemical H2O2 sensor.
2979 - 2983
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