The Effect of Calcium Perovskite and Newly Developed Magnetic CaFe2O4/CaTiO3 Perovskite Nanocomposite on Degradation of Toxic Dyes Under UV–Visible Radiation

• Published in: Journal of cluster science Vol. 33; no. 6; pp. 2475 - 2487
• Main Authors: Abdi, Zahra, Maghazeii, Farnaz, Ghanbari, Davood
• Format: Journal Article
• Language: English
• Published: New York Springer US 01.11.2022; Springer Nature B.V
• Subjects: Calcium ferrites; Calcium titanate; Catalysis; Catalytic activity; Chemistry; Chemistry and Materials Science; Crystallography; Current carriers; Degradation; Dyes; Ferromagnetism; Fourier transforms; Initial conditions; Inorganic Chemistry; Magnetic measurement; Magnetic properties; Methods; Microwaves; Morphology; Nanochemistry; Nanocomposites; Nanoparticles; Nanostructure; Original Paper; Outdoor air quality; Perovskites; Photocatalysis; Physical Chemistry; Pollutants; Power; Radiation; Semiconductors; Solvents; Calcium ferrite; Photocatalytic activity; UV–Visible light; Calcium perovskite; Nanocomposite
• ISSN: 1040-7278; 1572-8862
• DOI: 10.1007/s10876-021-02168-4

In this research, we used a fast and simple method for synthesis of calcium titanate (CaTiO 3 ) and calcium ferrite (CaFe 2 O 4 ) nanostructures: microwave assisted co-precipitation method. The effect of time, microwave radiation power and type of solvent on the morphology of magnetic nanoparticles was studied. Calcium ferrite/calcium titanate (CaFe 2 O 4 /CaTiO 3 ) nanocomposite was prepared by the same method. The morphology and particles size of samples were studied by scanning electron microscopy. The porous nanostructure of CaTiO 3 and CaFe 2 O 4 /CaTiO 3 were ideal for photocatalytic behavior. The crystallographic properties of products were analyzed using X-ray diffraction technique. The purity of the samples confirmed by Fourier transform infrared spectroscopy. The magnetic property of CaFe 2 O 4 and CaFe 2 O 4 /CaTiO 3 nanoparticles was determined by vibrating sample magnetometry. Both products had ferromagnetic properties with nanocomposite being a hard ferromagnetic sample. The photocatalytic behavior of CaTiO 3 and prepared nanocomposite was studied by measuring degradation efficiency of three different acidic dyes irradiated under UV–Visible light in different initial conditions. The results confirmed that both products have photocatalytic properties, but the CaFe 2 O 4 /CaTiO 3 has a higher photocatalytic activity due to coupling of two semiconductors, which can be employed for effective charge separation and increase of lifetime in the charge carriers.