INVESTIGATION OF STRUCTURAL, MORPHOLOGY AND OPTICAL PROPERTIES OF GO@METAL OXIDE THIN FILMS PREPARED BY SPRAY PYROLYSIS TECHNIQUE

In this study, spray pyrolysis was used to deposit Graphene Oxide (GO), GO@Ag, GO@Zn, GO@SnO2, GO@TiO2, and GO@SiO2 thin films. Various characterization methods including X-Ray Diffraction (XRD), and Field emission scanning electron microscopy (FESEM), were used to investigate the structural and morphological properties of the prepared thin films. XRD test verify the successfully fabrication of the samples. As seen in the FESEM images, the morphology of the nanocomposites was completely different, which is yet another indication that the nanocomposites were synthesized. In order to study the optical properties of thin films, Photoluminescence (PL) and UV-Visible spectroscopies were used. Among the samples, the one containing TiO2 nanoparticles showed the best performance in PL and UV-Visible analysis. The reason behind the high photocatalytic activity of GO@TiO2 nanocomposite is that the titanium ions act as trappings centers, which are beneficial for inhibition of the recombination electron-hole pairs.