ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Impact of Ce–Cu metal ions on structural, magneto-electrical properties of Co²⁺ based nano ferrites and their application in photo catalytic activity

Shivakumar Yelagandula, Rajasheker Reddy Eragari, A. Ramakrishna Reddy, Laxma Reddy Kotha, and Panasa Reddy Adulla

Department of Chemistry, University College of Science, Osmania University, Hyderabad, India

E-mail: raju.anupati@gmail.com

Received: 2 December 2023  Accepted: 28 March 2024

Abstract:

Cobalt based nanoferrites Co_1−xCu_xCe_yFe_2−yO₄ where x = 0.0 to 0.5 with 0.1 nano-ferrites synthesized through citrate gel auto combustion technique and their structural and topographical studies were inspected through X-ray diffraction technique and field emission scanning electron microscope. The structural analysis confirms the prepared nano-ferrites having single-phase cubic spinel, along Fd3m space group. Crystalline size of the synthesized samples found 20–26 nm calculated by Debey Scherrer formula. The FTIR spectrum reveals prominent absorption bands ʋ₁ and ʋ₂ within the wavenumber range below 1000 cm⁻¹, denoting tetrahedral and octahedral voids. The Raman spectrum of AB₂O₄ exhibits lattice vibrations expressible through 5T_u1 + A_1g + E_g + 3T_2g representations for the Fd₃m space group, predicted via group theory. Electrical properties were measured by LCR meter. The AC conductivity of the materials increased as increasing frequency. Magnetic behavior of the materials measured by a vibrating sample magnetometer, saturation magnetization gradually decreases as increasing Cu and Ce content and found to be 26 to 18 emu/gm. Catalytic activity of the samples confirmed by dye degradation studies of methylene blue and acid red dye degradation. The sample Co_0.9Cu_0.1Ce_0.1Fe_1.9O₄ exhibits the highest catalytic degradation activity for methylene blue and acid red.

Keywords: Citrate-gel method; XRD; FTIR; VSM; Catalytic activity; Dielectric studies

Full paper is available at www.springerlink.com.

DOI: 10.1007/s11696-024-03487-2

Chemical Papers 78 (8) 5131–5150 (2024)