Immobilization methods are very useful for placing desired photocatalysts on certain surfaces or substances which get a new application after immobilization, for example a photocatalitically active surface. There are a lot of immobilization methods, but the sol-gel method is the most efficient and accessible one. Photocatalysts can be immobilized on various surfaces and materials, even on recycled rubber. The results of an irradiated photocatalyst activity can be used for waste water or waste gas purifying and also for the creation of self-cleaning surfaces. The most used and the most popular photocatalyst is titanium dioxide due to its low cost, non-toxicity and a lot of other characteristics. Photocatalysts can be applied separately and they can be upgraded by various processes (doping, co-doping). Photocatalysis is a process that has a wide range of applications with various materials and effects. The process is based on the irradiation of surfaces with a certain spectrum of radion (mostly the solar spectrum), where the surfaces are coated with certain photocatalyst materials which promote or speed up these reactions, and in the same time make them more efficient. The goal of this paper is to prove the efficiency and accessibility of using the sol-gel method for the immobilization of photocatalysts, in this case titanium dioxide on certain surfaces, i.e., on recycled rubber (polymer material).