Zeynab Salehi - Dep. of Chemistry, Fac. of Science, University of Guilan
Nasim Rahmati - Dep. of Chemistry, Fac. of Science, University of Guilan
Ali Mohammad-khah - Dep. of Chemistry, Fac. of Science, University of Guilan

In this research, magnetic zinc ferrite nanoparticles (ZnFe۲O۴) and graphene oxide (GO) composites were prepared in order to remove methylene blue dye. ZnFe۲O۴ nanoparticles were synthesized through the hydrothermal method. Advanced oxidation processes (AOPs) are one of the most effective methods for the degradation of colored pollutants. Graphene oxide (GO)-based nanocomposites obtained by decorating graphene oxide sheets with nanoparticles (NPs) are of great interest due to their various possible applications [۱]. Methylene blue (MB), a cationic dye, is a harmful pollutant commonly found in wastewater, and chronic exposure to MB can cause adverse effects [۲]. The properties of the prepared nanocomposite were investigated using XRD, FT-IR, and TEM. The effects of changing surface area, pore diameter, and bandgap change are checked using BET and DRS. Also, the effect of different parameters such as pH, dye concentration and, catalyst dosage was investigated. The comparison of the degradation potential of catalysts using a vis light source was studied. Optimum conditions for MB removal in a vis environment were observed at pH ۳, contact time ۱۳۵ minutes, dye concentration ۵ ppm, and catalyst dosage ۰.۰۰۵ g. The rate of degradation in optimal conditions was observed to be ۸۱%.

dye, GO, Nanocomposite, Photocatalyst, Removal, ZnFe۲O۴