Preparation and study of the effect of pH value on structural, morphological, electrical and magnetic properties of CoFe2O4 nanoparticles prepared by sol-gel precipitation method

Preparation and study of the effect of pH value on structural, morphological, electrical and magnetic properties of CoFe2O4 nanoparticles prepared by sol-gel precipitation method

The present study reports the synthesis of cobalt ferrite nanoparticles (CoFe2O4 NPs) using the sol-gel precipitation process via mixing a stoichiometric ratio of cobalt chloride (1 M) and ferric chloride (2 M). The molar of ferric to cobalt was mentioned (2:1) and then 2 M of sodium hydroxide was a...

Full description

Saved in:
Bibliographic Details
Published in:Ceramics international Vol. 50; no. 17; pp. 31114 - 31123
Main Authors: Jabbar, Rihab, Shahatha, Sara H., Taieh, Nabil Kadhim, Magid, Bushra, Showard, Ansam F.
Format: Journal Article
Language:English
Published: Elsevier Ltd 01-09-2024
Subjects:
CoFe2O4 NPs
Magnetic properties
Nanoparticles
pH value
Sol-gel method
Nanoparticles
pH value
Sol-gel method
CoFe2O4 NPs
Magnetic properties
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The present study reports the synthesis of cobalt ferrite nanoparticles (CoFe2O4 NPs) using the sol-gel precipitation process via mixing a stoichiometric ratio of cobalt chloride (1 M) and ferric chloride (2 M). The molar of ferric to cobalt was mentioned (2:1) and then 2 M of sodium hydroxide was added. The structural and morphological features of the material were assessed using X-ray diffraction (XRD), Scanning electron microscopy (SEM), and atomic force microscopy (AFM). The electrical properties were analyzed using an LCR meter, while the magnetic properties were measured using a vibrating sample magnetometer (VSM). Fourier-transform infrared spectroscopy (FTIR) investigated the material's molecular vibrations. The X-ray diffraction (XRD) analysis revealed that all the samples exhibited a cubic spinal structure, and no additional peak was detected. Interestingly, the average size of the crystallites (D) decreased from 17.74 nm to 16.58 nm as the pH level increased from 7 to 13. This finding provides important insights into the behaviour of the tested samples under different pH conditions. The formation of the ferrite spine was confirmed by FTIR spectroscopy, with the primary detected bands (408.92–470.65 cm−1) attributed to the octahedral complexes and (516.94–588.31 cm−1) assigned to the tetrahedral ones. The dielectric and imaginary part of the dielectric constant decreased with increasing pH values excluding samples prepared at pH = 11. All samples with different pH values exhibit resonance peaks at frequencies up to (1 KHz). The magnetic measurements carried out by the VSM instrument, the result show that the saturation magnetization increases with increasing pH and the higher saturation magnetization is 68 emu. g1.
ISSN:0272-8842
1873-3956
DOI:10.1016/j.ceramint.2024.05.417