New photocatalytic materials prepared by dispersing graphene oxide (GO (x) ) into UV-curable epoxy resin can be classified as semiconductors and thanks to this behavior it can be used in order to activate photoxidative process in a similar way as it happens with the well-known TiO2. The activity of these new photocatalytic materials was evaluated in aqueous phase; photoactivity was determined by following the photodegradation of phenol during irradiation in the presence of epoxy crosslinked films containing GO (x) .