Investigation on the Particle Growth of Rutile TiO2 Suppressed by Manganese

Abstract

In this paper, we present the results of an investigation on the crystallite growth of rutile TiO2 and the formation of Mn–O–Ti bonds in a TiO2/manganese composition. The effects of manganese loading from 20 wt% to 80 wt%, into TiO2 at a temperature of 1200°C on the structural properties, have been studied. The material’sproperties have been characterized on the basis of the experimental data obtained using X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy and Scanning Electron Microscopy (SEM). It has been found that an increase of the loading by manganese up to 80 wt% leads to a decrease of the rutile crystallites size and an increase of the amount of Mn–O–Ti bonds. The analysis based on the interpretation of both XRD patterns and FTIR spectrum allows one to explain the reduction of the crystallite size of rutile TiO2 by an increase of the manganese loading.