Magneto-optical features of Ni-substituted CoFe2O4 nano spinel ferrites and its photocatalytic activity

Authors

  • P. Kalaivani Research Scholar, Department of Chemistry, Bharath Institute of Higher Education and Research, BIST, Chennai -73, Tamil Nadu, India
  • G. Mathubala Professor, Department of Chemistry, Bharath Institute of Higher Education and Research, BIST, Chennai -73, Tamil Nadu, India

Keywords:

microwave combustion, nano spinel ferrites, CoFe2O4, catalytic activity

Abstract

Ni-substituted cobalt ferrite (Co1-xNixFe2O4, x = 0.0 to 1.0) nano spinel ferrites (NSFs) with different particle sizes were created using the microwave combustion process with urea fuel. Powder XRD diffraction was used to characterize the acquired spinel ferrites, and HR-SEM and HR-TEM were used to examine the average size and grain shape. Nitrogen adsorption and desorption isotherms are used to estimate the BET-specific surface area, pore size distribution, and pore volume of Co1-xNixFe2O4 nanomaterials. The room temperature magnetization of Co1-xNixFe2O4 NSFs with various Ni contents (x = 0.2, 0.4, 0.6, 0.8, and 1.0) was measured using VSM (vibrating sample magnetometer). To estimate the catalytic activity of Co1-xNixFe2O4 NSFs, the degradation of 4-NP has been studied with NaBH4 at room temperature. Moreover, reduction reactions are achieved with 2 ×10-5 M of sodium borohydride (NaBH4) and Co1-xNixFe2O4 with NSF catalysts. CoFe2O4 shows zero activity in the reduction reaction. Surprisingly, it has been perceived that the catalytic efficiency is improved with the introduction of Ni content with CoFe2O4 lattice. Among all compositions, Co0.8Ni0.2Fe2O4 shows a maximum rate constant. Different mechanisms are investigated using the acquired results, and their relevance to magnetism and structure is explained.

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Published

2024-09-22

How to Cite

P. Kalaivani, & G. Mathubala. (2024). Magneto-optical features of Ni-substituted CoFe2O4 nano spinel ferrites and its photocatalytic activity. Journal of Computational Analysis and Applications (JoCAAA), 33(08), 416–426. Retrieved from http://eudoxuspress.com/index.php/pub/article/view/1331

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