Green Synthesis of Reduced Graphene Oxide Decorated with Silver Nanoparticles Using Onosma bracteosa Leaf Extract for Efficient Electrochemical Detection of Hydrogen Peroxide

IF 2.7 4区化学 Q3 CHEMISTRY, PHYSICAL

Electrocatalysis Pub Date : 2024-12-02 DOI:10.1007/s12678-024-00918-2

Ersan Turunc, Ahmet Soner Ulger, Riza Binzet

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Abstract

In this study, a simple, cost-effective and eco-friendly method was performed for the production of silver nanoparticle decorated reduced graphene oxide (rGO-Ag) nanocomposite using Onosma bracteosa leaf extract as reducing and stabilizing agent. The structure of the synthesized rGO-Ag nanocomposite was characterized by UV–Vis, XRD, SEM, TEM, EDX, and XPS. The synthesized rGO-Ag nanocomposite was used to fabricate an electrochemical sensor (rGO-Ag@GCE) for the determination of hydrogen peroxide. Electrochemical reduction of hydrogen peroxide was performed using DPV on rGO-Ag@GCE in 0.1 M PBS. The rGO-Ag@GCE exhibited good response in the linear concentration range of 25 µM to 800 µM, with a LOD of 0.11 µM. Amperometric measurements showed that the prepared sensor did not have a significant response to interfering species. Moreover, analysis of real samples demonstrated the potential of rGO-Ag@GCE as an electrochemical sensor for detecting hydrogen peroxide in commercial milk samples.

Graphical Abstract

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利用小苞草叶提取物绿色合成修饰银纳米粒子的还原性氧化石墨烯用于过氧化氢的高效电化学检测

本研究采用一种简单、经济、环保的方法，以小榄叶提取物为还原剂和稳定剂，制备纳米银修饰的还原性氧化石墨烯（rGO-Ag）纳米复合材料。采用UV-Vis、XRD、SEM、TEM、EDX和XPS对合成的氧化石墨烯-银纳米复合材料进行了结构表征。将合成的氧化石墨烯-银纳米复合材料用于制备过氧化氢的电化学传感器（rGO-Ag@GCE）。在0.1 M PBS中，利用DPV在rGO-Ag@GCE上进行了过氧化氢的电化学还原。rGO-Ag@GCE在25µM ~ 800µM的线性浓度范围内表现出良好的响应，LOD为0.11µM。安培测量结果表明，所制备的传感器对干扰物质的响应不显著。此外，对实际样品的分析表明rGO-Ag@GCE作为一种电化学传感器在商业牛奶样品中检测过氧化氢的潜力。图形抽象

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来源期刊

Electrocatalysis CHEMISTRY, PHYSICAL-ELECTROCHEMISTRY

CiteScore

4.80

自引率

6.50%

发文量

审稿时长

>12 weeks

期刊介绍： Electrocatalysis is cross-disciplinary in nature, and attracts the interest of chemists, physicists, biochemists, surface and materials scientists, and engineers. Electrocatalysis provides the unique international forum solely dedicated to the exchange of novel ideas in electrocatalysis for academic, government, and industrial researchers. Quick publication of new results, concepts, and inventions made involving Electrocatalysis stimulates scientific discoveries and breakthroughs, promotes the scientific and engineering concepts that are critical to the development of novel electrochemical technologies. Electrocatalysis publishes original submissions in the form of letters, research papers, review articles, book reviews, and educational papers. Letters are preliminary reports that communicate new and important findings. Regular research papers are complete reports of new results, and their analysis and discussion. Review articles critically and constructively examine development in areas of electrocatalysis that are of broad interest and importance. Educational papers discuss important concepts whose understanding is vital to advances in theoretical and experimental aspects of electrochemical reactions.