Photocatalytic Activity, Microstructures and Luminescent Study of Ti-ZS:M Nano-composites Materials

Our main interest in this work is in the synthesis and improvement of the physical properties of TiO 2 -based nanocomposites modified by coupling to Zn 2 SiO 4 :Mn ( ZS:M ) nanoparticles. The micro-structural characterizations carried out by using X-ray diffraction (XRD) and transmission electron microscopy (TEM) techniques of various TiO 2 -ZS:M ( Ti-ZS:M ) samples at different temperatures revealed the formation of the anatase phase. The optical properties of TiO 2 modified by ZS:M nanoparticles shows a shift in absorption band toward UV region reflecting a significant an increase in the energy band gap for anatase phase at 3.36 eV, which is larger than the 3.06 eV found for the Dugussa P25 TiO 2 . In this work, the influence of the annealing temperature on the microstructural, physico-chemical characteristics of the different samples is presented and their correlation with their photoluminescence in the visible spectral region has been investigated.