Low-temperature synthesis of nano-TiO2 anatase on nafion membrane for using on DMFC

Abstract

Low-temperature synthesis of 60-70°C of anatase nanocrystalline titanium dioxide TiO2 using sol-gel technique on Nafion membrane is investigated and characterized. Titan tetraisopropoxide (TTIP) is used as precursor and ethanol as the solvent. The best precursor to solvent weight ratio has been used for the synthesis of nano-TiO2 particles. The X-ray diffractograms and TEM images show the formation of anatase structure of nanocrystalline TiO2 at low temperatures as shown with average particle size below 12 nm. The films deposited by spin coating technique using these nanoparticles show the crystalline and porous nature of the films. The nano-TiO2 film as shown can be used to reduce the cross-over permeation of methanol through the PEM and increase electric power of the DMFC. © 2009 IOP Publishing Ltd.