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Poly-Cobalt[tetrakis(o-aminophenyl)porphyrin] Nanowire and Single-Walled Carbon Nanotube for the Analysis of Hydrogen Peroxide

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Abstract:

Nanowires of poly-cobalt[tetrakis(o-aminophenyl)porphyrin] (PCoTAPPNW) were fabricated by electrochemical polymerization by the cyclic voltammetric method in anodic aluminum oxide membranes. A glassy carbon electrode (GCE) modified by PCoTAPPNW and single-walled carbon nanotubes (SWNT) without any binder was investigated with voltammetric methods in phosphate buffer saline (PBS) at pH 7.4. The PCoTAPPNW + SWNT/GCE exhibited strongly enhanced voltammetric and amperometric sensitivity towards hydrogen peroxide (H2O2), which shortened the response time (<5 seconds), showed detection limit of 1.0 M and enhanced the sensitivity for H2O2 detection with 194 A mM−1 cm−2. The PCoTAPPNW +SWNT/GCE can be used to monitor H2O2 at very low concentration in physiological pH as an efficient electrochemical H2O2 sensor.

Keywords: AMPEROMETRY; COBALTPORPHYRIN NANOWIRE; ELECTROCHEMICAL SENSOR; HYDROGEN PEROXIDE; SINGLE-WALLED CARBON NANOTUBES; VOLTAMMETRY

Document Type: Research Article

DOI: https://doi.org/10.1166/jnn.2011.3079

Publication date: 2011-02-01

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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