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<p>The current work reports the synthesis of cobalt ferrite (CoFe<sub>2</sub>O<sub>4</sub>) and clay doped CoFe<sub>2</sub>O<sub>4</sub> (CFO) nanocomposite using solution combustion and reflux method. The clay/CFO was confirmed by using XRD, FTIR, HRTEM, EDAX and UV–Visible spectroscopy. In photocatalysis study, malachite green (MG) dye was successfully degraded effectively using clay (81.3%), CFO (62.3%) and clay/CFO (98.2%) at 120&#xa0;min with following first-order kinetics. The antioxidant property of nanocomposite was enhanced significantly against 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical with IC<sub>50</sub> value 2714.01&#xa0;mg/mL. Electrochemically, lower reversibility combined with higher diffusion coefficient and impedance values resulted in enhanced electrochemical properties. The supercapacitance values of CFO (307.69 F/g) and clay/CFO (555.55 F/g) were estimated at 2 A/g using galvanostatic charge–discharge (GCD) analysis. The produced electrodes were utilized to detect Cr<sup>+6</sup> and Hg<sup>+2</sup> sensors using cyclic voltammetry (CV) and differential pulse voltammetry (DPV) techniques. Cr<sup>+6</sup> and Hg<sup>+2</sup> ion concentrations ranged from 0 to 150&#xa0;mM, with low detection limits of 21.76&#xa0;mM for Cr<sup>+6</sup> and 25.76&#xa0;mM for Hg<sup>+2</sup>. These produced electrodes demonstrated remarkable electrochemical detection of Cr<sup>+6</sup> and Hg<sup>+2</sup> ions.</p>

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Synthesis, characterization and multifunctional studies of clay doped CoFe2O4 nanocomposite using neem leaves

  • 期刊论文

  • 发表日期：

    2025年3月18日

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  • Madhu H.,
  • Rajendra prasad S.,
  • Mylarappa M.,
  • Chandruvasan S.

摘要

The current work reports the synthesis of cobalt ferrite (CoFe2O4) and clay doped CoFe2O4 (CFO) nanocomposite using solution combustion and reflux method. The clay/CFO was confirmed by using XRD, FTIR, HRTEM, EDAX and UV–Visible spectroscopy. In photocatalysis study, malachite green (MG) dye was successfully degraded effectively using clay (81.3%), CFO (62.3%) and clay/CFO (98.2%) at 120 min with following first-order kinetics. The antioxidant property of nanocomposite was enhanced significantly against 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical with IC50 value 2714.01 mg/mL. Electrochemically, lower reversibility combined with higher diffusion coefficient and impedance values resulted in enhanced electrochemical properties. The supercapacitance values of CFO (307.69 F/g) and clay/CFO (555.55 F/g) were estimated at 2 A/g using galvanostatic charge–discharge (GCD) analysis. The produced electrodes were utilized to detect Cr+6 and Hg+2 sensors using cyclic voltammetry (CV) and differential pulse voltammetry (DPV) techniques. Cr+6 and Hg+2 ion concentrations ranged from 0 to 150 mM, with low detection limits of 21.76 mM for Cr+6 and 25.76 mM for Hg+2. These produced electrodes demonstrated remarkable electrochemical detection of Cr+6 and Hg+2 ions.