Synthesis, Properties and Photocatalytic Activity of CaTiO-Based Ceramics Doped with Lanthanum.

The aim of this work is to study the effect of lanthanum doping on the phase formation processes in ceramics based on CaTiO3, as well as to evaluate the effectiveness of the ceramics as photocatalysts for the decomposition of the organic dye Rhodamine B. The methods used were scanning electron microscopy to evaluate the morphological features of the synthesized ceramics, X-ray diffraction to determine the phase composition and structural parameters, and UV-Vis spectroscopy to determine the optical properties of the ceramics. During the experiments it was found that an increase in the lanthanum dopant concentration from 0.

Phase Transformations and Photocatalytic Activity of Nanostructured YO/TiO-YTiO Ceramic Such as Doped with Carbon Nanotubes.

This work is devoted to the study of phase transition processes in nanostructured ceramics of the YO/TiO-YTiO type doped with carbon nanotubes as a result of thermal annealing, as well as to the assessment of the prospects of the effect of phase composition on photocatalytic activity. By the method of X-ray phase analysis, it was found that an increase in the annealing temperature leads to the formation of the orthorhombic phase YTiO, as well as structural ordering. Based on the obtained UV spectra, the band gap was calculated, which varies from 2.