International Journal of Nano Dimension (Int. J. Nano Dimens.) Preparation, characterization and photocatalytic degradation of congo red by ZnZrO3/ZnO/ZrO2 Volume 11 (2020) Issue 1, January 2020 2024 02 07 Preparation, characterization and photocatalytic degradation of congo red by ZnZrO3/ZnO/ZrO2 EN Azadeh Moradzadeh Department of Chemistry, Science and Research Branch, Islamic Azad University, Tehran, Iran. 0000_0002_3964_2938 Ali Reza Mahjoub Department of Chemistry, Faculty of Science, Tarbiat Modares University Tehran, Iran. Moayad Hosaini Sadr Department of Chemistry, Azarbaijan Shahid Madani University, Tabriz, Iran. Nazanin Farhadyar Department of Chemistry, Islamic Azad University, Varamin-Pishva, Iran. Journal Article 2024 02 07 Un-doped and Cd-doped ZnZrO3/ZnO/ZrO2 nano composites (CDZZ-NCPs) (CD0-4) were synthesized by the hydrothermal method. The nano composites were characterized by various techniques such as Fourier Transform Infra-Red spectroscopy (FT-IR), X-ray Diffraction (XRD), Field Emission Scanning Electron Microscopy (FE-SEM) and Energy Dispersive X-Ray Analysis (EDS). The photocatalytic properties of CDZZ-NCPs (CD0-4) were studied by degradation of congo red (CR) dye under sunlight irradiation. The results reveal unique sunlight photocatalytic ability for the degradation of CR. The experimental demonstrated that the 0.03 g of ZnZrO3/ZnO/ZrO2 nano composites can degradate 50 mL of CR solution (10 ppm) during 5 minutes (up to 91.3%).