Degradation of methylene blue and rhodamine B by hollow ZnO microspheres formed of radially oriented nanorods

Authors : Hasan ESKALEN, Mustafa KAVGACI

Pages : 998-1006

Doi:10.28948/ngumuh.1225826

View : 67 | Download : 121

Publication Date : 2023-07-15

Article Type : Research Paper

Abstract :It is crucial to find effective solutions to environmental contamination that are also ecologically friendly. Zinc oxide insert ignore into journalissuearticles values(ZnO); is well-known as a promising photocatalyst. In this work, ZnO microspheres were synthesized using the solvothermal technique. X-ray diffraction insert ignore into journalissuearticles values(XRD);, UV-Vis, and scanning electron microscopy insert ignore into journalissuearticles values(SEM); were used to evaluate the structural, optical, and morphological features of ZnO microspheres. The hexagonal structure of ZnO was determined using XRD analysis. The crystal size of ZnO was calculated using XRD patterns and was found to be 44.27 nm by the Debye-Scherrer equation, 32.39 nm by using the Williamson Hall model, and 9.92 nm by the Modified Scherrer formula. The SEM pictures of the manufactured ZnO revealed that it has a shape in the form of microspheres formed by the conjunction of hexagonal nanorods. The average diameter of these microspheres is 5.16 μm. ZnO has a band gap energy of 3.1 eV. The photocatalytic activities of ZnO microspheres against methylene blue and Rhodamine B dyes were examined. Under sunlight, photocatalytic removal rates for methylene blue after 90 minutes and Rhodamine B after 120 minutes were 98.95% and 98.62%, respectively.
Keywords : ZnO, Mikroküreler, Metilen mavisi, Rhodamine B, Fotokatalitik