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<p>The current study used curry leaves as a reducing agent and a simple laboratory reflux process to synthesize the rGO/CeFe<sub>2</sub>O<sub>4</sub> (rGO/CFO) nanocomposite. Under UV light irradiation, the rGO/CFO hybrid exhibited remarkable photocatalytic activity, degrading Orange G (OG) dye by 89.24% within 90&#xa0;min. The rGO/CFO electrode’s improved proton diffusion coefficient (1.62 × 10<sup>− 16</sup>&#xa0;m²/s) and electron transfer resistance resulted in larger anodic and cathodic peak currents, indicating its electrochemical sensitivity. The prepared electrode demonstrated a specific capacitance of 236.08&#xa0;F/g and 93% stability after 1000 cycles at a current density of 1&#xa0;A/g, respectively. The electrochemical sensing investigation of rGO/CFO revealed that the limits of detection and quantification for neurotransmitters like dopamine (DA) and CFO were 21.78 mM and 86.75 mM, and 34.61 mM and 104.89 mM, respectively. As a result, the findings suggested that the nanocomposite is a promising candidate for energy-related and environmental remediation applications.</p>

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Fabrication of rGO/CeFe2O4 nanohybrid for photodegradation, energy storage, and dopamine detection

  • 期刊论文

  • 发表日期：

    2025年12月17日

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  • Firdous Nayeem,
  • Basavaraj Angadi,
  • Mylarappa M,
  • S. Chandruvasan

摘要

The current study used curry leaves as a reducing agent and a simple laboratory reflux process to synthesize the rGO/CeFe2O4 (rGO/CFO) nanocomposite. Under UV light irradiation, the rGO/CFO hybrid exhibited remarkable photocatalytic activity, degrading Orange G (OG) dye by 89.24% within 90 min. The rGO/CFO electrode’s improved proton diffusion coefficient (1.62 × 10− 16 m²/s) and electron transfer resistance resulted in larger anodic and cathodic peak currents, indicating its electrochemical sensitivity. The prepared electrode demonstrated a specific capacitance of 236.08 F/g and 93% stability after 1000 cycles at a current density of 1 A/g, respectively. The electrochemical sensing investigation of rGO/CFO revealed that the limits of detection and quantification for neurotransmitters like dopamine (DA) and CFO were 21.78 mM and 86.75 mM, and 34.61 mM and 104.89 mM, respectively. As a result, the findings suggested that the nanocomposite is a promising candidate for energy-related and environmental remediation applications.