Synthesis and Characterization of ZnO/GO Photocatalysts


Ant Bursalı E.

4. International Dicle Scientific Research and Innovation Congress, Diyarbakır, Turkey, 18 - 19 April 2023, pp.1

  • Publication Type: Conference Paper / Summary Text
  • City: Diyarbakır
  • Country: Turkey
  • Page Numbers: pp.1
  • Dokuz Eylül University Affiliated: Yes

Abstract

Photocatalysts are semiconductor materials which create a strong oxidizing environment on the surface when exposed to light. They absorb the light and convert it to a high-energy state, transfer this energy to reactive materials and initiate a chemical reaction. Many transition metal complexes such as titanium dioxide (TiO2), tungsten oxide (WO3), iron (III) oxide (Fe2O3), cadmium sulfide (CdS) and zinc oxide (ZnO) are widely used in various environmental processes including organic waste degradation and photochemical or photobiological degradation of different organic pollutants. Graphene oxide (GO) is a material that has a characteristic density and specific heat and is prominent with its excellent mechanical and thermal properties. Graphene oxide is known to enhance the photocatalytic performance of transition metal complexes. In the literature, there are many GO-doped photocatalysts that have been synthesized by different methods, generally in aqueous media, and used as catalysts in various reactions. Especially, photocatalysts containing ZnO attached to GO layers seem to have an excellent advantage in terms of high photocatalytic efficiency and usability in environmental problems. In this study, it was aimed to synthesize ZnO/GO photocatalyst by solid state mechanical mixing followed by calcination instead of wet method using GO, which is synthesized from a very cheap material pencil by Hummer’s method. The obtained photocatalyst was tried to be characterized by methods such as Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD) and scanning electron microscopy (SEM).