Electrochemical Impedance Studies on Single and Multi-Walled Carbon Nanotubes--Polymer Nanocomposites for Biosensors Development.
Advances in nanoscience have allowed scientists to incorporate new nanomaterials in biosensing platforms. Carbon nanotubes are nanomaterials that facilitate the charge transfer between the bioelement and the transducer. Electrochemical impedance spectroscopy is a useful technique for the modified surface characterization. In the present approach electrochemical impedance spectroscopy was used to characterize the electrodes modified with different types of carbon nanotubes (single and multi-wall) according to their morphology and electrochemical behavior. By using Nyquist and Bode diagrams it was possible to assign the appropriate circuit considering all possible contributors. The charge transfer resistances as well as the time constants were calculated for all five types of investigated carbon nanotubes.
Mihaela
M
Tertiş
Anca
A
Florea
Bogdan
B
Feier
Iuliu Ovidiu
IO
Marian
Luminţa
L
Silaghi-Dumitrescu
Alexandru
A
Cristea
Robert
R
Săndulescu
Cecilia
C
Cristea
D015374:Biosensing Techniques; D058266:Dielectric Spectroscopy; D004566:Electrodes; D005898:Glass; D008422:Materials Testing; D053761:Nanocomposites / Q000737:chemistry*; D037742:Nanotubes, Carbon / Q000737:chemistry*; D011108:Polymers / Q000737:chemistry*
D037742:Nanotubes, Carbon; D011108:Polymers