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首页> 外文期刊>Nanobiotechnology, IET >Peanut skin extract mediated synthesis of gold nanoparticles, silver nanoparticles and gold–silver bionanocomposites for electrochemical Sudan IV sensing
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Peanut skin extract mediated synthesis of gold nanoparticles, silver nanoparticles and gold–silver bionanocomposites for electrochemical Sudan IV sensing

机译：花生皮提取物介导的金纳米颗粒，银纳米颗粒和金-银仿生纳米复合材料的合成，用于电化学苏丹IV感测

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摘要

Sustainable methods are needed for rapid and efficient detection of environmental and food pollutants. The Sudan group of dyes has been used extensively as adulterants in food and also are found to be polluting the soil and water bodies. There have been several methods for detection of Sudan dyes, but most of them are not practical enough for common use. In this study, the electrochemical detection efficiency and stability of gold nanoparticle (AuNPs), silver NPs and Au–Ag bionanocomposites, synthesised by peanut skin extract, modified glassy carbon electrode has been investigated. The synthesised nanomaterial samples were characterised, for their quality and quantity, using ultra–visible spectroscopy, inductive coupled plasma mass spectrophotometer, Fourier transform infrared spectroscopy, energy-dispersive X-ray spectroscopy, high-resolution transmission electron microscope and field emission scanning electron microscope. The nanomaterial hybrid electrodes showed great efficiency and stability in the detection of Sudan IV compared with the other previous electrodes. The peak current of the Sudan IV oxidation and reduction was found to be proportional to its concentration, in the range of 10–80 µM, with a detection limit of 4 µM. The hybrid electrodes showed 90% stability in detection for 20 cycles.
机译：需要快速有效地检测环境和食品污染物的可持续方法。苏丹染料已被广泛用作食品中的掺假品，并且还污染了土壤和水体。已经有几种检测苏丹染料的方法，但是大多数方法对于实际使用来说不够实用。在这项研究中，研究了花生皮提取物，修饰玻碳电极合成的金纳米粒子（AuNPs），银纳米粒子和Au-Ag纳米复合材料的电化学检测效率和稳定性。使用超可见光谱，电感耦合等离子体质谱仪，傅立叶变换红外光谱仪，能量色散X射线光谱仪，高分辨率透射电子显微镜和场发射扫描电子显微镜表征合成的纳米材料样品的质量和数量。 。与其他以前的电极相比，纳米材料混合电极在苏丹IV的检测中显示出很高的效率和稳定性。发现Sudan IV氧化和还原的峰值电流与其浓度成正比，范围为10–80 µM，检出限为4 µM。混合电极在20个循环的检测中显示90％的稳定性。

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