Somaye Khammarnia - Chemistry Department, Payame Noor University, Tehran ۱۹۳۹۵-۴۶۹۷, Iran
jilla saffari - Department of Chemistry, Zahedan Branch, Islamic AzadUniversity, P.O. Box ۹۸۱۳۵-۹۷۸, Zahedan, Iran
Mehri-Saddat Ekrami-Kakhki - Esfarayen University of Technology, Esfarayen, North Khorasan, Iran

In this work, La۲MnFe۲O۷ and La۲CuFe۲O۷ photocatalysts were synthesized using a co-precipitation method. The surface morphology, structure, crystalline phase and magnetic behavior of the catalysts were investigated by TEM, FT-IR, XRD, DRS, and VSM. The photocatalytic activity of the La۲MnFe۲O۷ and La۲CuFe۲O۷ nanocomposites were appraised using the optical decomposition of malachite green oxalate (MG), methyl violet (MV), and Eriochrome Black T (EBT) beneath ultraviolet (UV) beam irradiance at different factors like the solution pH, dyes’ concentration, catalysts’ amount, temperature and time of UV light radiation. This research provided the synthesis of new composite magnetic photocatalysts and the study of their effectual in the field of photodegradation of dye pollutants.

Photocatalysts, Malachite green oxalate, Methyl violet, Eriochrome Black T, Co-precipitation