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<p>A sustainable carbon paste electrode (SCP) on a fabric substrate (SCP/Fabric) was successfully fabricated via a stencil printing method using activated carbon, beeswax, and virgin coconut oil. The electrode surface was subsequently modified with silver nanoparticles (AgNPs) synthesized through a green method. The formation of AgNPs was confirmed by ultraviolet-visible (UV-Vis) spectroscopy, X-ray diffraction (XRD), and particle size analysis using transmission electron microscopy (TEM). Surface modification of SCP/Fabric with AgNPs significantly enhanced the electrode’s electrochemical performance for uric acid (UA) detection, increasing its effective surface area by 21%. The AgNPs/SCP/Fabric electrode exhibited two linear response ranges: 0.010–1.00 mM (sensitivity: 33.329 <InlineEquation ID="IEq1"> <EquationSource Format="TEX">\(\mu {\text{A~mM}}^{{ - {\text{1}}}}\)</EquationSource> </InlineEquation>, detection limit: 1.13 µM) and 1.00–5.00 mM (sensitivity: 5.021 <InlineEquation ID="IEq2"> <EquationSource Format="TEX">\(\mu {\text{A~mM}}^{{ - {\text{1}}}}\)</EquationSource> </InlineEquation>, detection limit: 7.47 µM). The electrochemical biosensor showed good reproducibility, acceptable repeatability over 30 cycles, and tolerance to common interferents including glucose, urea, ascorbic acid, lactic acid, and ethanol, with current response deviations under 8%. These findings demonstrate that the AgNPs/SCP/Fabric electrode is promising as a cost-effective, eco-friendly, and reliable platform for UA detection in artificial biofluids.</p> Graphical abstract <p></p>

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Green-synthesized silver nanoparticles on sustainable screen-printed fabric electrode for enhanced uric acid detection

  • 期刊论文

  • 发表日期：

    2026年1月14日

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  • Yuan Alfinsyah Sihombing,
  • Dhewa Edikresnha,
  • Isa Anshori,
  • Dian Ahmad Hapidin,
  • Khairurrijal Khairurrijal

摘要

A sustainable carbon paste electrode (SCP) on a fabric substrate (SCP/Fabric) was successfully fabricated via a stencil printing method using activated carbon, beeswax, and virgin coconut oil. The electrode surface was subsequently modified with silver nanoparticles (AgNPs) synthesized through a green method. The formation of AgNPs was confirmed by ultraviolet-visible (UV-Vis) spectroscopy, X-ray diffraction (XRD), and particle size analysis using transmission electron microscopy (TEM). Surface modification of SCP/Fabric with AgNPs significantly enhanced the electrode’s electrochemical performance for uric acid (UA) detection, increasing its effective surface area by 21%. The AgNPs/SCP/Fabric electrode exhibited two linear response ranges: 0.010–1.00 mM (sensitivity: 33.329 \(\mu {\text{A~mM}}^{{ - {\text{1}}}}\) , detection limit: 1.13 µM) and 1.00–5.00 mM (sensitivity: 5.021 \(\mu {\text{A~mM}}^{{ - {\text{1}}}}\) , detection limit: 7.47 µM). The electrochemical biosensor showed good reproducibility, acceptable repeatability over 30 cycles, and tolerance to common interferents including glucose, urea, ascorbic acid, lactic acid, and ethanol, with current response deviations under 8%. These findings demonstrate that the AgNPs/SCP/Fabric electrode is promising as a cost-effective, eco-friendly, and reliable platform for UA detection in artificial biofluids.

Graphical abstract