Due to the industrial progress during the past decades, two of the most important issues of human life are water recycling and air cleaning. The use of titanium oxide (TiO2) is a promising reactive technique for the removal of pollutants from air or water as self-cleaning surfaces because of the biological and chemical stability, high photoactivity, low toxicity and low cost of TiO2 [1]. On the other hand, ferrites offer two main advantages: the spinel crystal structure with available extra catalytic sites and the band gap capable of absorbing visible light. When combined with TiO2, the TiO2/ferrites composites are expected to show higher efficiency as photocatalysts than the individual ferrite or titania alone. During our study, ZnFe2O4 and ZnFe1.98La0.02O4 nanoparticles were synthesized using a sol-gel autocombustion method. Afterwards, an ultrasound (US) – assisted synthesis was employed, ferrites nanocristals being added in the reaction pot before the titanium source. Pluronic F127 was used as templating agent, which was eliminated during the microwaves assisted calcination, creating mesopores. The properties of the synthesized samples were investigated using various techniques: XRay Diffraction, N2-sorption measurements, SEM Imaging, UV-Vis Diffuse Reflectance Spectroscopy. The photocatalytic efficiency was investigated by UV dye degradation. It was concluded that the TiO2/ferrites composites have the ability to enhance the photocatalytic reaction, by means of efficient charge carrier transfer due to the narrow band gap of ferrites.