被还原氧化石墨烯包裹的硫化钴锰纳米颗粒:作为高效电化学传感平台测定香兰素的神奇纳米复合材料

IF 5.2 Q1 FOOD SCIENCE & TECHNOLOGY
Peihong Deng , Chuanqin Zhou , Hui Sun , Aiting Chen , Yanping Wei , Nana Tang , Shuting Shi , Jinsong Zuo , Junhua Li , Quanguo He
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引用次数: 0

摘要

在这项工作中,通过一种简便的水热辅助电化学还原方法,成功地在玻璃碳电极(GCE)表面合成了一种迷人的纳米复合材料,该复合材料基于电化学还原氧化石墨烯(ERGO)包裹的硫化锰钴(MnS/Co3S4)。通过扫描电子显微镜、循环伏安法和电化学阻抗谱对修饰电极进行了全面表征。形态学结果表明,MnS/Co3S4 嵌入 ERGO 层中,形成了粗糙的表面和三维(3D)微观结构。与 ERGO/GCE 和 MnS/Co3S4/GCE 相比,合成的 MnS/Co3S4-ERGO/GCE 对香兰素氧化的电催化活性明显增强。因此,MnS/Co3S4-ERGO/GCE 可用作灵敏测定香兰素的有效电化学传感平台,所制备的传感器线性范围宽(0.02-1.00 μmol/L 和 1.0-40.0 μmol/L),检出限低(4.0 nmol/L),回收率在 98.0% 至 102.8% 之间。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Manganese cobalt sulfide nanoparticles wrapped by reduced graphene oxide: a fascinating nanocomposite as an efficient electrochemical sensing platform for vanillin determination

Manganese cobalt sulfide nanoparticles wrapped by reduced graphene oxide: a fascinating nanocomposite as an efficient electrochemical sensing platform for vanillin determination

In this work, a fascinating nanocomposite based on manganese-cobalt sulfide (MnS/Co3S4) wrapped by electrochemically reduced graphene oxide (ERGO) has been successfully synthesized on the surface of a glassy carbon electrode (GCE) by a facile hydrothermal assisted electrochemical reduction method. The modified electrode was fully characterized by scanning electron microscopy, cyclic voltammetry and electrochemical impedance spectroscopy. The morphological results illustrate that MnS/Co3S4 are embedded in the ERGO layers, resulting in a rough surface and three-dimensional (3D) microstructure. The as-synthesized MnS/Co3S4-ERGO/GCE displays distinctly enhanced electrocatalytic activity for vanillin oxidation in comparison with that of the ERGO/GCE and MnS/Co3S4/GCE. Therefore, the MnS/Co3S4-ERGO/GCE can be used as an effective electrochemical sensing platform for the sensitive determination of vanillin, and the fabricated sensor displays a wide linear range of 0.02−1.00 μmol/L and 1.0−40.0 μmol/L, low detection limit of 4.0 nmol/L and satisfactory recoveries between 98.0% and 102.8%.

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CiteScore
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