TY - JOUR ID - 134768 TI - α-Fe2O3 Nanoparticles: Synthesis, Characterization, Magnetic Properties and Photocatalytic Degradation of Methyl Orange JO - Advanced Journal of Chemistry, Section A JA - AJCA LA - en SN - 2645-7768 AU - Dehno Khalaji, Aliakbar AU - Machek, Pavel AU - Jarosova, Marketa AD - Department of Chemistry, Faculty of Science, Golestan University, Gorgan, Iran AD - Institute of Physic of the Czech Academy of Sciences, Na Slovance 2, 182 21 Prague, Czech Republic Y1 - 2021 PY - 2021 VL - 4 IS - 4 SP - 317 EP - 326 KW - α-Fe2O3 KW - Magnetic nanoparticles KW - photocatalyst KW - degradation DO - 10.22034/ajca.2021.292396.1268 N2 - α-Fe2O3 magnetic nanoparticles (MNPs) (Fe-1, Fe-2 and Fe-3) were prepared by a simple wet chemical precipitation route and characterized by Fourier transform infrared spectroscopy (FT‑IR), X‑ray diffraction (XRD) and transmission electron microscopy (TEM). The magnetic behaviors of the as‑prepared Fe3O4 nanoparticles were done using vibrating sample magnetometer (VSM). In addition, the as‑prepared α‑Fe2O3 nanoparticles were used as photocatalyst for degradation and removal of methyl orange (MO) dye under visible light irradiation from aqueous solution. The influence of various parameters such as contact time and dosage of catalyst have been examined and discussed. The studies revealed that the degradation of MO reached to 95% (Fe‑1), 88% (Fe‑2) and 62% (Fe‑3) within 120 min by increasing of catalyst dosage from 0.02 g to 0.06 g.  Degradation rates of MO by Fe‑1, Fe‑2 and Fe‑3 were 0.0249, 0.0177 and 0.0081 min‑1, respectively, indicating that the degradation depends on the crystalline size and morphology of the α‑Fe2O3 magnetic nanoparticles. UR - http://www.ajchem-a.com/article_134768.html L1 - http://www.ajchem-a.com/article_134768_71a22417e136425b019f013ec066d0db.pdf ER -