The effect of pH on preparation of single phase zinc stannate nanoparticles

Abstract

In present work, we report the synthesis of Zn2SnO4 by the co-precipitation method. We have focused on the effect of the pH values on the phase, optical and photoluminescence properties. The structural and optical properties of the prepared material were investigated by powder X-ray diffraction (XRD), Raman Spectroscopy, UV-Visible spectroscopy and Photoluminescence spectroscopy. X-Ray diffraction pattern indicates that synthesized Zn2SnO4 exhibit the face centered cubic crystal structure. Raman spectrum exhibits two characteristic mode of spinel zinc stannate at the higher annealing temperature, which confirmed the XRD results. Photoluminescence of sample annealed at higher temperature and the lower pH values show the three peaks due to strain and oxygen vacancies with band gap around 3.78eV.