A Voltammetric Sensor Based on MgFe2O4 Decorated on Reduced Graphene Oxide‐modified Electrode for Sensitive and Simultaneous Determination of Catechol and Hydroquinone,Electroanalysis

当前位置： X-MOL 学术 › Electroanalysis › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

A Voltammetric Sensor Based on MgFe2O4 Decorated on Reduced Graphene Oxide‐modified Electrode for Sensitive and Simultaneous Determination of Catechol and Hydroquinone
Electroanalysis ( IF 2.7 ) Pub Date : 2018-09-04 , DOI: 10.1002/elan.201800357
Miloš Ognjanović ₁ , Dalibor M. Stanković _{1,

2} , Martin Fabián _{1,

3} , Aleksandar Vukadinović ₁ , Željko Prijović ₁ , Biljana Dojčinović ₄ , Bratislav Antić ₁

Affiliation

In this work facile one step synthesis of magnesium ferrite (MgFe₂O₄) nanoparticles decorated on reduced graphene oxide (MgFe@RGO) using a microwave assisted hydrothermal procedure is reported. The synthesized material was characterized with help of several techniques and applied for the modification of glassy carbon electrode. Such prepared electrode was utilized for successive simultaneous detection of structurally similar compounds, 1,2‐ and 1,4‐dihydroxibenzenes (catechol (CC) and hydroquinone (HQ)), using differential pulse voltammetry technique. It was found that oxidation current increases linearly with the concentrations of both investigated compounds. Detection limits for both species are ≤0.31 μM. The best analytical response in the presence of both CC and HQ, taking into account peak shape and peak current, was obtained at pH 5.6 utilizing acetate buffer solution. The often‐presented species in the surface waters as well as gallic acid and caffeine do not interfere with determination of CC and HQ, while ascorbic acid shows high interference. The method is successfully applied for detection of catechol and hydroquinone in real samples analyses.

中文翻译：

氧化还原石墨烯修饰电极上修饰的基于MgFe2O4的伏安传感器，用于灵敏，同时测定邻苯二酚和对苯二酚

在这项工作中，一步合成镁铁氧体（MgFe ₂ O ₄报道了使用微波辅助水热方法在还原的氧化石墨烯（MgFe @ RGO）上修饰的纳米颗粒。借助多种技术对合成材料进行了表征，并将其应用于玻璃碳电极的改性。使用差分脉冲伏安法，将这种准备好的电极用于连续同时检测结构相似的化合物1,2-和1,4-二氢西苯（邻苯二酚（CC）和对苯二酚（HQ））。发现氧化电流随两种所研究化合物的浓度线性增加。两种物质的检出限≤0.31μM。考虑到峰形和峰电流，在使用CC和HQ的情况下，使用乙酸盐缓冲溶液可获得最佳的分析响应。地表水中常见的物种以及没食子酸和咖啡因不会干扰CC和HQ的测定，而抗坏血酸则表现出很高的干扰度。该方法已成功应用于实际样品分析中邻苯二酚和对苯二酚的检测。

更新日期：2018-09-04

点击分享查看原文

点击收藏

阅读更多本刊最新论文本刊介绍/投稿指南11