Title of article :
Strategies for the optimization of carbon nanotube/polymer ratio in composite materials: Applications as voltammetric sensors
Author/Authors :
Olivé-Monllau، نويسنده , , Rosa and Esplandiu، نويسنده , , Ma José and Bartrolي، نويسنده , , Jordi and Baeza، نويسنده , , Mireia and Céspedes، نويسنده , , Francisco، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2010
Pages :
8
From page :
353
To page :
360
Abstract :
Multiwall carbon nanotubes and resin epoxy have been used to fabricate a composite electrode for electroanalytical purposes. The optimum composite proportions for high electrode sensitivity, low limit of detection and fast response were investigated. Compositions were characterized by percolation theory, electrochemical impedance spectroscopy, cyclic voltammetry, scanning electron microscopy, atomic force microscopy and chronoamperometry. We found that around the optimum composite proportion, the electrode performance is less affected by small variations in the composition of the composite. These composite electrodes provide easy surface renewal, low background current, an efficient mass transport and are suitable for chemical modification. The potentiality of this approach in terms of electroanalytical response is demonstrated by means of the amperometric detection of ascorbic acid in water solution.
Keywords :
Voltammetric sensor , Characterization techniques , Carbon nanotubes composite , Electrochemical impedance spectroscopy
Journal title :
Sensors and Actuators B: Chemical
Serial Year :
2010
Journal title :
Sensors and Actuators B: Chemical
Record number :
1438187
Link To Document :
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