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Vol. 38 No. 10 (2026): Vol 38, Issue 10, 2026

Copyright (c) 2026 Swapnil A. Bhagat, Kajal A. Gurav, Subhash M. Wani, Pratik S. Patil, Vitthal Vinayak, A.P. Keche, K.M. Jadhav

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Structural, Optical and Magnetic Properties of Samarium Doped Cobalt Ferrite Nanoparticles for Photocatalytic Applications

https://doi.org/10.14233/ajchem.2026.36688
Swapnil A. Bhagat
Department of Physics, Deogiri College, Chhatrapati Sambhajinagar-431001, India
https://orcid.org/0009-0000-5178-398X
Kajal A. Gurav
Department of Physics, Deogiri College, Chhatrapati Sambhajinagar-431001, India
https://orcid.org/0009-0002-8368-1026
Subhash M. Wani
Department of Physics, R.G. Bagdia Arts, S.B. Lakhotia Commerce and R. Bezonji Science College, Jalna-431203, India
https://orcid.org/0009-0009-0834-264X
Pratik S. Patil
Department of Physics, Dr. Babasaheb Ambedkar Marathwada University, Chhatrapati Sambhajinagar-431004, India
https://orcid.org/0009-0001-1445-9483
Vitthal Vinayak
Department of Industrial Chemistry, Shri. Chhatrapati Shivaji College, Omerga-413606, India
A.P. Keche
Department of Physics, R.B. Attal Arts, Science and Commerce, Georai, Beed-431127, India
https://orcid.org/0000-0002-2515-2073
K.M. Jadhav
Department of Physics, Dr. Babasaheb Ambedkar Marathwada University, Chhatrapati Sambhajinagar-431004, India; Department of Physics, School of Basic and Applied Sciences, MGM University, Chhatrapati Sambhajinagar-431001, India
https://orcid.org/0000-0001-9911-411X

Corresponding Author(s) : Swapnil A. Bhagat

swapniilbhagat@gmail.com

Asian Journal of Chemistry, Vol. 38 No. 10 (2026): Vol 38, Issue 10, 2026

Abstract

In the present work, Sm3+ doped spinel cobalt ferrite (CoFe2O4) nanoparticles [CoFe2-xSmxO4 (x = 0.00 to 0.10, with an increment of 0.02)] were fabricated using glycine assisted sol-gel self-ignition method, to understand the effect of Sm3+. The single phase, cubic spinel ferrite phase of the prepared NPs was characterized with the X-ray diffraction (XRD). FTIR spectra confirm the appearance of absorption bands at 554-550 cm–1 and 401-389 cm–1. FE-SEM and HR-TEM observations revealed nearly uniform nanoparticles with slight changes in particle morphology upon Sm3+ incorporation. Elemental diffraction spectra (EDS) show the elements of cobalt (Co), ferric (Fe), samarium (Sm) and oxygen (O) ions with varying intensity. BET analysis demonstrated variation in the specific surface area associated with particle growth. Optical measurements showed a gradual decrease in band gap energy with increasing Sm3+ incorporation. Magnetic measurements confirmed the ferrimagnetic behavior of all samples. The saturation magnetization (Ms) decreased from 77.32 to 60.17 emu g–1, while the coercivity (Hc) increased from 1279.0 to 1752.7 Oe. These changes indicate that Sm3+ substitution influences the magnetic response of CoFe2-xSmxO4 nanoparticles. Sm3+ doping at x = 0.10 improved the photocatalytic efficiency from 86.6% to 88.2%. The changes in structural, optical and magnetic characteristics with Sm3+ substitution were accompanied by improved photocatalytic performance, which support the suitability of CoFe2-xSmxO4 nanoparticles for photocatalytic applications.

Keywords

Cobalt ferrite Samarium Doping Sol-gel Photocatalysis
(1)
Bhagat, S. A.; Gurav, K. A.; Wani, S. M.; Patil, P. S.; Vinayak, V.; Keche, A.; Jadhav, K. Structural, Optical and Magnetic Properties of Samarium Doped Cobalt Ferrite Nanoparticles for Photocatalytic Applications. ajc 2026, 38, 2779-2788.
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