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Abstract <p>This study is directed to the electrochemical synthesis, characterization, and non-enzymatic cholesterol sensor application of Cr<sub>2</sub>O<sub>3</sub>/reduced graphene oxide (rGO) nanostructures (Cr<sub>2</sub>O<sub>3</sub>/rGO) on pencil graphite electrodes (PGE). For this purpose, Cr<sub>2</sub>O<sub>3</sub>/rGO nanostructures were synthesized using a one-pot electrochemical deposition technique from the electrolyte medium containing Cr<sup>3+</sup> ions and graphene oxide (GO). Different methods, such as XPS, Raman, SEM, and EDS, were used to characterize the prepared nanostructures. The electrode material, whose structural and morphological characterization was completed, was used for the non-enzymatic determination of cholesterol. The detection limit was determined as 0.0048 mM in the linear concentration range of 0.05–5 mM. Both voltammetric and amperometric studies showed that the synthesized Cr<sub>2</sub>O<sub>3</sub>/reduced graphene oxide nanostructures can be used as cholesterol sensors.</p>

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Non-Enzymatic Cholesterol Sensor Based on Electrofabricated Cr2O3/Reduced Graphene Oxide Modified Electrodes

  • 期刊论文

  • 发表日期：

    2025年8月1日

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  • Hülya Öztürk Doğan,
  • Ahmet Recep Korkmaz,
  • Emir Çepni,
  • Tuba Öznülüer Özer

摘要

Abstract

This study is directed to the electrochemical synthesis, characterization, and non-enzymatic cholesterol sensor application of Cr2O3/reduced graphene oxide (rGO) nanostructures (Cr2O3/rGO) on pencil graphite electrodes (PGE). For this purpose, Cr2O3/rGO nanostructures were synthesized using a one-pot electrochemical deposition technique from the electrolyte medium containing Cr3+ ions and graphene oxide (GO). Different methods, such as XPS, Raman, SEM, and EDS, were used to characterize the prepared nanostructures. The electrode material, whose structural and morphological characterization was completed, was used for the non-enzymatic determination of cholesterol. The detection limit was determined as 0.0048 mM in the linear concentration range of 0.05–5 mM. Both voltammetric and amperometric studies showed that the synthesized Cr2O3/reduced graphene oxide nanostructures can be used as cholesterol sensors.