Because of its unique properties, Titanium dioxide is one of the best candidates for use as photocatalys, but due to inherent properties of the titanium dioxide, light absorbsion is only take place in the UV range. While the sun as a huge source of energy without the cost and biocompatibility, only about 3-5 percent of its light is in the range of UV light and the rest is in the range of visible light and IR radiation. So, it must be activated by visible light, The main purpose of this thesis is to solve thses problems. In this thesis, Two general approaches have been used for this purpose, in the first step titanium dioxide nanotubes were prepared by anodizing , and then to improve their photocatalytic performance in the visible region, sulfide semiconductors of CuS, CdS and Ag2S were doped by SILAR method. The dyes degradation results showed that nano-photocatalytic CuS/TiO2-3 has the destructive power of about 96 percent which is the best performance in degradation process. As well as dye degradation test after repeated 5 times in about 90% of its initial performance is maintained and the overall performance of photocatalytic titanium dioxide nanotubes showed 58 times. In the second approach nanotubes composite FeTiO2 were prepared by in situ anodizing and then sulfide semiconductors CuS, CdS and Ag2S were doped by SILAR method. The results showed that nano-photocatalytic composite CdS/FeTiO2-2 with dye degradation is about 95 percent, the best performance, and by repeating six times dye degradation tests, the initial performance 92% destruction was able to maintain its dye. The morphology, structure and optical properties of nano-photocatalytic produced in this thesis were examined by FE-SEM, XRD, EDX and UV-Visible techniques. The results showed that nanotubes composite FeTiO2 without any doped, have better photocatalytic performance than doped titanium dioxide nanotubes and by doping the nanotube composites, photocatalytic performance of nanotubes in the best sample reach 99.8% against nanotube composite-titanium dioxide. Generally, the results also showed that the range of performance of nano-photocatalyst composites prepared well from the ultraviolet to visible light has changed and on the other hand anodizing and in situ anodizing methods for the production of these nanotubes can be an easy and low-cost method and this method now used in the industry. The method which were used for doping these nanotubes is a very simple technique and without the need for complicated equipments, producing of these materials in large quantities and in industrial scale is capable. So the nano-photocatalysts prepared in this thesis are readily produced on a large and industrial scale.