Fabrication of an interpenetrated network of carbon nanotubes and

D.F. ACEVEDO; S. REISBERG; B. PIRO; D.O. PERALTA; M.C. MIRAS; M.C. PHAM; C.A. BARBERO,

ELECTROCHIMICA ACTA

pergamon

Lugar: cambridge; Año: 2008 vol. 53 p. 4001 - 4006

0013-4686

Layers of multiwall carbon nanotubes (MWNT), with different thickness, are built by sequential drop coating of a MWNT-Nafion® dispersion in ethanol. The layers act as a 3 D conductive networks towards the electrochemical reactions of soluble redox couples (Fe+3/+2) in aqueous solutions. They are also used to electropolymerize different hydroxynaphtoquinones in acetonitrile. The electropolymerization produces an interpenetrated network which is electroactive in nonaqueous and aqueous media. The effective area could be increased by up to 19 times, improving the sensitivity of biosensors.