Recent studies have shown that the light-absorption and photocatalytic efficiencies of TiO2 can be improved by coupling TiO2 nano-particles with nonmetallic dopants, such as carbon. In this paper, we describe the electrophoretic preparation of a novel TiO2-carbon nano-composite photocatalyst on a glass indium thin oxide (ITO) substrate. The objective is to take better advantage of the (e(-)/h(+)) pair generated by photoexcitation of semiconducting TiO2 particles. The transfer of electrons (e(-)) into adjacent carbon nano-particles promotes reduction of oxygen to produce hydrogen peroxide (H2O2) which, in the presence of iron ions, can subsequently form hydroxyl radicals ((OH)-O-center dot) via the Fenton reaction. At the same time, (OH)-O-center dot is formed from water by the (h(+)) holes in the TiO2. Thus, the (OH)-O-center dot oxidant is produced by two routes. The efficiency of this photolytic-Fenton process was tested with a model organic compound, Orange-II (OG-II) azo dye, which is employed in the textile industry. (C) 2007 Elsevier B.V. All rights reserved.