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  11. Electrochemical Sensing Of Caffeic Acid On Natural Biomass-pyrrole-functionalized Magnetic Biochar (pfmb) As Promising Spe Material

Electrochemical sensing of caffeic acid on natural biomass-pyrrole-functionalized magnetic biochar (PFMB) as promising SPE material

Imen Abidli1, Mohamed Bououdina2, Latifa Latrous3,4

  • 1Laboratoire de Chimie Minérale Appliquée (LR19ES02), Faculté Des Sciences de Tunis, Université de Tunis El Manar, Campus Universitaire El Manar I, 2092, Tunis, Tunisia.

Mikrochimica Acta
|March 19, 2025

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View abstract on PubMed

Summary
This summary is machine-generated.

A novel sensor using peanut shell-derived magnetic biochar detects caffeic acid (CA) in saliva. This cost-effective biosensor offers sensitive and reliable CA analysis for various applications.

Area of Science:

  • Materials Science
  • Electrochemistry
  • Biomedical Engineering

Background:

  • Caffeic acid (CA) is a significant biomarker.
  • Accurate CA detection in saliva is crucial for health monitoring.
  • Developing cost-effective and sensitive sensors is essential.

Purpose of the Study:

  • To develop a peanut shell-modified screen-printed carbon electrode (SPE) for caffeic acid (CA) sensing.
  • To fabricate magnetic biochar (MB) and pyrrole-functionalized magnetic biochar (PFMB) from peanut shells.
  • To investigate the electrochemical properties and sensing performance of the PFMB-modified SPE.

Main Methods:

  • Fabrication of magnetic biochar (MB) and pyrrole-functionalized magnetic biochar (PFMB) via hydrothermal process.
  • Characterization of PFMB using XRD, FTIR, Raman, SEM, and VSM.
Keywords:
BiocharCaffeic acidDifferential pulse voltammetry (DPV)Electrochemical sensor

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  • Electrochemical analysis using cyclic voltammetry and differential pulse voltammetry.
  • Quantum chemical modeling for structure-activity relationship analysis.

    • Main Results:

    • The PFMB-modified SPE exhibited excellent electrocatalytic activity towards CA.
    • A wide linear detection range of 10–600 μM and a low limit of detection (0.08 μM) were achieved.
    • The sensor demonstrated successful real-time detection of CA in various samples.
    • Synergistic effects of PFMB and Fe3O4 enhanced the electrocatalytic response.

    Conclusions:

    • The developed PFMB-modified SPE is a highly effective sensor for caffeic acid detection in saliva.
    • The sensor offers a low-cost, sensitive, and reliable method for CA analysis.
    • This approach utilizes abundant biomass waste for advanced electrochemical sensing applications.
    Screen-printed electrode (SPE)