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Abstract <p>Yttrium-doped cadmium sulfide (<b>Y-CdS</b>) nanocrystals were synthesized by a co-precipitation method. The electrochemical behavior of the modified electrode, Y-CdS/glassy carbon electrode, was explored by voltammetric and electrochemical impedance studies. The electrochemical performance of the modified electrode demonstrated a remarkable enhancement in peak current for the oxidation of dopamine and was also used for the simultaneous determination of dopamine, uric acid, xanthine, and hypoxanthine, which exhibit a linear response for all these biomolecules. The modified electrode also demonstrated long-term stability, good reproducibility and successfully applied to the determination of dopamine in real samples, enabling rapid detection in practical applications.</p>

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Facile Synthesis of Yttrium-Doped Cadmium Sulfide Nanocrystals for the Simultaneous Electrochemical Sensing of Dopamine, Uric Acid, Xanthine, and Hypoxanthine

  • 期刊论文

  • 发表日期：

    2025年4月1日

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  • Vinay Gopalappa,
  • Ashwini Gulaganahalli Ramadasaiah,
  • Nagaraju Kottam,
  • Shivaraj Yellappa

摘要

Abstract

Yttrium-doped cadmium sulfide (Y-CdS) nanocrystals were synthesized by a co-precipitation method. The electrochemical behavior of the modified electrode, Y-CdS/glassy carbon electrode, was explored by voltammetric and electrochemical impedance studies. The electrochemical performance of the modified electrode demonstrated a remarkable enhancement in peak current for the oxidation of dopamine and was also used for the simultaneous determination of dopamine, uric acid, xanthine, and hypoxanthine, which exhibit a linear response for all these biomolecules. The modified electrode also demonstrated long-term stability, good reproducibility and successfully applied to the determination of dopamine in real samples, enabling rapid detection in practical applications.