Preparation and characterisation of chemically-modified perfluorinated cation-exchange platinum-containing membranes

Perfluorinated cation-exchange flat-sheet membranes were treated with ethyl ene diamine (EDA) to investigate the influence of EDA-surface-treatment on the process of platinum deposition on these membranes. Electroless chemical deposition of Pt particles on modified membranes was achieved using the Ta kenaka-Torikai method. Chemical modification of the surface, a profile of p latinum distribution within the membrane, platinum particle size, and chemi cal structure of the membrane were investigated by means of electrical cond uctivity measurements, scanning electron microscopy (SEM), and IR-spectrome try. Dielectric analysis (DEA) was used to investigate the dipole and ion m obility of hydrolysed EDA-treated membranes. (C) 2000 Elsevier Science B.V. All rights reserved.