Fotokatalyticky aktivní nanokompozity pro stavební hmoty

Abstract

The composites of silicon oxide/TiO2 and phyllosilicate / TiO2 were prepared within the frame of this dissertation. For the preparation of the composites, the titanylsulphate was used as the TiO2 precursor. The as synthesized composites were subsequently thermally treated at the given temperatures. Obtained samples were characterized using the selected methods of the chemical and phase analysis, their photodegradation activity was also evaluated. Selected composites were then used as the admixtures in the cement pastes ant their effect on the mechanical strength of hardened pastes was also tested. For the selected cement pastes the self-cleaning ability was tested using Rhodamine B, which was deposited on the surface of the tested samples, the photodegradation ability of the selected samples towards NO was also tested. The comparison of the samples showed that the most promising material is the calcined composite kaoline/TiO2.