Abstract
Carbon xerogels synthesized from polycondensation of resorcinol with formaldehyde, having specific surface areas in the range 650 to 990 m 2 g −1 and variable degrees of surface oxidation, are used to prepare TiO 2–carbon xerogel composites by sol–gel methods. These composite materials are used to support Pt nanoparticles (5 wt.%) by the photodeposition technique. After a high temperature reduction treatment at 773 K, the obtained materials were characterized in order to assess the interactions between the phases Pt, TiO 2 and carbon xerogel. It is observed that the carbon xerogel acts as an adhesive agent of the TiO 2 and Pt particles, enhancing the interaction between the metal and the composite support.
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