Because of the extremely great specific surface area of various morphology nanostructures TiO2 has become one of the most widely studied photocatalysts for environmental and energy problems solving. Precious metals doping of TiO2 nanostructures allows to achieve a significantly higher photocatalytic activity. However, it is impossible to compare literature data for a variety of precious metal modified TiO2 nanostructures as methods of synthesis, post-processing and photocatalytic activity measurements differs. In this research synthesis of Au, Pt, Ag and Pd modified TiO2 nanotubes, nanopores and nanofibers were done. For assessment of photocatalytical activity of modified TiO2 photocatalysts MB degradation method under UV radiation were used. Titanium dioxide nanotubes, nanopores and nanofibres were obtained by using anodization, plasma electrolytic oxidation and microwave-assisted synthesis method respectively. The highest photocatalytic activity shows nanofiber sample containing with 1% Au. Photocatalytic activity depending on the precious metal dopant increases the following order: Ag <Pd <Pt <Au.