Novel in situ electrochemical deposition of platinum nanoparticles by sinusoidal voltages on conducting polymer films

Platinum (Pt) nanoparticles were successfully electrodeposited in situ on an organic conductive polymer, poly(3,4-ethylenedioxythiophene) (PEDOT), using for the first time sinusoidal voltages of various frequencies in a chloroplatinic acid solution. The organic PEDOT matrix was electrodeposited on Pt electrode chips. The Pt electrode chips consist of a 150 nm Pt layer deposited on 100-oriented standard 3’’ silicon wafers. The cyclic voltammograms of the PEDOT-Pt-nanoparticles composite material recorded in 0.5 M H2SO4 aqueous solution demonstrated that Pt nanoparticles are electrochemically active. Values of the roughness of the composite materials, measured by optical non-contact 3D profilometry, ranging from 880 nm to 1.6 m were obtained  Corresponding author. Phone: +40 21 4023886; fax: +40 21 3111796 , E-mail address: [email protected] *Manuscript Click here to view linked References ha l-0 06 64 52 0, v er si on 1 30 J an 2 01 2 Author manuscript, published in "Synthetic Metals 162, 1-2 (2012) 193-198"