Carbon nanotube-epoxy composites for electrochemical sensing

Martin Pumera; Arben Merkoçi; Salvador Alegret

doi:10.1016/j.snb.2005.07.010

Carbon nanotube-epoxy composites for electrochemical sensing

Martin Pumera, Arben Merkoçi, Salvador Alegret

Department of Chemical and Biomolecular Engineering

Research output: Contribution to journal › Article › peer-review

67 Citations (Scopus)

Abstract

Rigid and conductive carbon nanotube-epoxy composite (CNTEC) electrodes were constructed from two kinds of multiwall carbon nanotubes differing in the length (0.5-2 and 0.5-200 μm) mixed with epoxy resin. The electrochemical behavior of CNTEC electrodes was characterized by using cyclic voltammetry of ferricyanide, NADH and hydrogen peroxide. The behavior of CNTEC electrodes prepared with different percentages of CNT has been compared with that of graphite-epoxy composite (GEC) electrode. It was found that long-carbon nanotube (0.5-200 μm) based epoxy composite electrodes show strong electrocatalytic activity towards NADH and hydrogen peroxide while short-carbon nanotube (0.5-2 μm) based epoxy composites show similar oxidation potential as graphite-epoxy composite electrode for the both NADH and H ₂O ₂. In all cases, CNTEC electrodes provide better reversibility, peak shape, sensitivity and stability compared with GEC electrode. The obtained experimental results demonstrate remarkable electrochemical and mechanical advantages of carbon nanotube composites compared to graphite composites for sensor applications.

Original language	English
Pages (from-to)	617-622
Number of pages	6
Journal	Sensors and Actuators, B: Chemical
Volume	113
Issue number	2
DOIs	https://doi.org/10.1016/j.snb.2005.07.010
Publication status	Published - 2006 Feb 27

Bibliographical note

Funding Information:
This work was financially supported by (1) Ministry of Education and Culture (MEC) of Spain (Projects BIO2004-02776, MAT2004-05164 and the grant MEC 2003-022 given to Dr. M. Pumera,); (2) Spanish foundation Ramón Areces (project ‘Bionanosensores’); (3) “Ramón y Cajal” program of MEC (Spain) that supports Dr. A. Merkoçi. Authors acknowledge the efficient technical assistance of Mr. Francesc Bohils for SEM images.

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Instrumentation
Condensed Matter Physics
Surfaces, Coatings and Films
Metals and Alloys
Electrical and Electronic Engineering
Materials Chemistry

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10.1016/j.snb.2005.07.010

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title = "Carbon nanotube-epoxy composites for electrochemical sensing",

abstract = "Rigid and conductive carbon nanotube-epoxy composite (CNTEC) electrodes were constructed from two kinds of multiwall carbon nanotubes differing in the length (0.5-2 and 0.5-200 μm) mixed with epoxy resin. The electrochemical behavior of CNTEC electrodes was characterized by using cyclic voltammetry of ferricyanide, NADH and hydrogen peroxide. The behavior of CNTEC electrodes prepared with different percentages of CNT has been compared with that of graphite-epoxy composite (GEC) electrode. It was found that long-carbon nanotube (0.5-200 μm) based epoxy composite electrodes show strong electrocatalytic activity towards NADH and hydrogen peroxide while short-carbon nanotube (0.5-2 μm) based epoxy composites show similar oxidation potential as graphite-epoxy composite electrode for the both NADH and H 2O 2. In all cases, CNTEC electrodes provide better reversibility, peak shape, sensitivity and stability compared with GEC electrode. The obtained experimental results demonstrate remarkable electrochemical and mechanical advantages of carbon nanotube composites compared to graphite composites for sensor applications.",

author = "Martin Pumera and Arben Merko{\c c}i and Salvador Alegret",

note = "Funding Information: This work was financially supported by (1) Ministry of Education and Culture (MEC) of Spain (Projects BIO2004-02776, MAT2004-05164 and the grant MEC 2003-022 given to Dr. M. Pumera,); (2) Spanish foundation Ram{\'o}n Areces (project {\textquoteleft}Bionanosensores{\textquoteright}); (3) “Ram{\'o}n y Cajal” program of MEC (Spain) that supports Dr. A. Merko{\c c}i. Authors acknowledge the efficient technical assistance of Mr. Francesc Bohils for SEM images. ",

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AU - Merkoçi, Arben

AU - Alegret, Salvador

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Y1 - 2006/2/27

N2 - Rigid and conductive carbon nanotube-epoxy composite (CNTEC) electrodes were constructed from two kinds of multiwall carbon nanotubes differing in the length (0.5-2 and 0.5-200 μm) mixed with epoxy resin. The electrochemical behavior of CNTEC electrodes was characterized by using cyclic voltammetry of ferricyanide, NADH and hydrogen peroxide. The behavior of CNTEC electrodes prepared with different percentages of CNT has been compared with that of graphite-epoxy composite (GEC) electrode. It was found that long-carbon nanotube (0.5-200 μm) based epoxy composite electrodes show strong electrocatalytic activity towards NADH and hydrogen peroxide while short-carbon nanotube (0.5-2 μm) based epoxy composites show similar oxidation potential as graphite-epoxy composite electrode for the both NADH and H 2O 2. In all cases, CNTEC electrodes provide better reversibility, peak shape, sensitivity and stability compared with GEC electrode. The obtained experimental results demonstrate remarkable electrochemical and mechanical advantages of carbon nanotube composites compared to graphite composites for sensor applications.

AB - Rigid and conductive carbon nanotube-epoxy composite (CNTEC) electrodes were constructed from two kinds of multiwall carbon nanotubes differing in the length (0.5-2 and 0.5-200 μm) mixed with epoxy resin. The electrochemical behavior of CNTEC electrodes was characterized by using cyclic voltammetry of ferricyanide, NADH and hydrogen peroxide. The behavior of CNTEC electrodes prepared with different percentages of CNT has been compared with that of graphite-epoxy composite (GEC) electrode. It was found that long-carbon nanotube (0.5-200 μm) based epoxy composite electrodes show strong electrocatalytic activity towards NADH and hydrogen peroxide while short-carbon nanotube (0.5-2 μm) based epoxy composites show similar oxidation potential as graphite-epoxy composite electrode for the both NADH and H 2O 2. In all cases, CNTEC electrodes provide better reversibility, peak shape, sensitivity and stability compared with GEC electrode. The obtained experimental results demonstrate remarkable electrochemical and mechanical advantages of carbon nanotube composites compared to graphite composites for sensor applications.

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Carbon nanotube-epoxy composites for electrochemical sensing

Abstract

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