Simultaneous voltammetric determination of dopamine and uric acid using screen printed carbon electrode modified with quercetin functionalized-iron oxide nanoparticles

IF 5.3 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Research Bulletin Pub Date : 2025-01-14 DOI:10.1016/j.materresbull.2025.113317

Abdul Niaz , Muhammad Balal Arain , Mustafa Soylak

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引用次数: 0

Abstract

Due to close oxidation potential values of dopamine (Dop) and uric acid (Uric), their simultaneous electrochemical detection in biological fliuds has always been a great problem of contineous research work. To address this issue magnetic iron oxide (Fe₃O₄) nanoparticles are promising eletrode materials owing to their high catalytic activity, easy synthesis procedure, lower cost and non toxic nature. Therefore, in the present work, we have investigated, a novel electrochemical sensor which is based on a screen printed carbon electrode (SPCE) modified with quercetin (Qr) functionalized-iron oxide nanoparticles (Qr-Fe₃O₄/SPCE) for the simultaneous voltammetric detection of Dop and Uric. The SEM analysis confirmed the porous morphology with nanosize distribution and XRD revealed the cystalline strucutre. The average size of the bare Fe₃O₄ and Qr-Fe₃O₄ nanoparticles were estimated to be 11.7 and 9.1 nm, respectively. The FT-IR analysis confirmed the successful functionalization of quercetin on the surface Fe₃O₄ nanoparticles. The cyclic voltammetric and electrochemical impedance spectroscopic techniques were used to characterize the electrical properties of the electrodes. The Qr-Fe₃O₄ sensor greatly improved the peak current signals towards the oxidation of Dop and Uric which was found to be due to the synergistic electrocatalytic effect of Qr and Fe₃O₄ nanoparticles on the electrode surface. The fabricated sensor presented linear peak current responses as a funtion of Dop and Uric concentrations in the ranges from 0.2 – 50 µM and 0.2 – 25 µM, with detection limits of 0.07 and 0.08 µM, respectively. Moreover, the Qr-Fe₂O₃/SPCE based sensor showed good repeatability with RSD of 1.7% for Dop and 2.8% for Uric and displayed good discrimination ability over the common interferents. The successful application of the sensor to the spike urine samples enabled the determinations with good recoveries without matrix effect from urine sample. Thus the developed electrochemical sensor could be a suitable sensing device for Dop and Uric with a large peak potential separation ability due to its easy preparation procedure, ecofriendly nature, lower cost and good sensitivity and selectivity.

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来源期刊

Materials Research Bulletin 工程技术-材料科学：综合

CiteScore

9.80

自引率

5.60%

发文量

372

审稿时长

42 days

期刊介绍： Materials Research Bulletin is an international journal reporting high-impact research on processing-structure-property relationships in functional materials and nanomaterials with interesting electronic, magnetic, optical, thermal, mechanical or catalytic properties. Papers purely on thermodynamics or theoretical calculations (e.g., density functional theory) do not fall within the scope of the journal unless they also demonstrate a clear link to physical properties. Topics covered include functional materials (e.g., dielectrics, pyroelectrics, piezoelectrics, ferroelectrics, relaxors, thermoelectrics, etc.); electrochemistry and solid-state ionics (e.g., photovoltaics, batteries, sensors, and fuel cells); nanomaterials, graphene, and nanocomposites; luminescence and photocatalysis; crystal-structure and defect-structure analysis; novel electronics; non-crystalline solids; flexible electronics; protein-material interactions; and polymeric ion-exchange membranes.