A Comparative Study on Electrochemical Properties of Nanocomposite Films

Obtained by Co-Deposition of Conducting Polymers and Carbon Nanotubes

Viorel Branzoi1, Luisa Pilan1, Florina Branzoi2 1Department of Applied Physical Chemistry and Electrochemistry, University Politehnica

of Bucharest, Calea Griviţei 132, 010737, Romania 2Institute of Physical Chemistry, 202 Splaiul Independenţei, 060021, district 6,

Bucharest, Romania

Composite films of carbon nanotubes with polypyrrole (PPy), polyaniline (Pani) and

poly[o-phenylenediamine] (PoPD) were prepared via electrochemical co-deposition from

solutions containing poly(m-aminobenzenesulfonic acid) functionalized single-walled

carbon nanotubes and the corresponding monomer.

The synthetic, morphological and electrochemical properties of PPy/SWNT-PABS,

Pani/SWNT-PABS and PoPD/SWNT-PABS nanocomposites films were compared.

Characterization was performed by electrochemical impedance spectroscopy (EIS),

cyclic voltammetry (CV) and scanning electron microscopy (SEM) techniques.

The as-prepared nanocomposite electrodes also showed excellent electrocatalytic

activities towards hydrogen peroxide. The catalytic activities toward H2O2 may be further

exploited for construction of oxidase-based biosensors with a good reproducibility and

high stability, as well as minimized interference.

References

[1] M. Hughes, G.Z. Chen, M.S.P. Shaffer, D.J. Fray, A.H. Windle, Chem. Mater. 2002,

14 (4), 1610.

[2] G. Han, J. Yuan, G. Shi, F. Wei, Thin Solid Films 2005, 474,64.

[3] C. Peng, J. Jin, G. Z. Chen, Electrochim. Acta 2007, 53, 525.

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