OICC Press International Journal of Nano Dimension 2228-5059 5 2 2024 02 29 Photo catalytic property of ZnO and Mn-ZnO nanoparticles in removal of Cibacet Turquoise blue G from aquatic solution 10.7508/ijnd.2014.02.007 EN N. Assi 1Department of Chemistry, Science and Research Branch, Islamic Azad University, Tehran, Iran A.A. Mehrdad Sharif Department of Chemistry, Faculty of Chemistry, North Tehran Branch, Islamic Azad University, Tehran, Iran H. Bakhtiari Department of Chemistry, Azad University, Tehran North Branch, Tehran, Iran Q. S. Manuchehri Naeini Department of Chemistry, Faculty of Chemistry, North Tehran Branch, Islamic Azad University, Tehran, Iran Journal Article 2024 02 29 ZnO and Mn-ZnO nano powders were prepared by the sol-gel auto combustion method. The products were characterized by X-ray diffraction (XRD), energy dispersive analysis of X-ray (EDX) and scanning electron microscopy (SEM). Structural and morphological properties of nano particles were investigated and the average crystalline size of ZnO and Mn-doped ZnO was obtained 44 and 51 nm, respectively. Also, photo catalytic removal of Cibacen Turquoise Blue G dye from aqueous solution by using nano scale ZnO and Mn-ZnO powders under UV light irradiation was studied. The effect of initial dye concentrations and dosage of photo catalysts, were investigated in the photo destructive process. This is 57% of dye degraded by 0.02 mg of ZnO in 70 minutes. The degradation rate increase to 84% in the presence of 0.02 mg of Mn-ZnO in the same time.