Titanium dioxide (TiO2) is an interesting semiconductor mate-rial, especially due to its application in photo assisted reactions for the reduction or elimination of water contaminants, auto cleaning(anti-bacterial, anti-soot), and more recently for the treatment ofc ontaminant gases present in the air and in medicine [1,2].In the last years, novel nanostructures (nanotubes and nanoparticles) derived from TiO2have been employed in photocatalysis [3].These structures have been synthesized due to their high specific surface area, ion-exchange and photocatalytic abilities