A Novel Ternary Graphene‐based Nanocomposite Modified Electrode for Acetaminophen Detection,Electroanalysis

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A Novel Ternary Graphene‐based Nanocomposite Modified Electrode for Acetaminophen Detection
Electroanalysis ( IF 2.7 ) Pub Date : 2020-03-12 , DOI: 10.1002/elan.201900668
Manorama Singh ₁ , Anjumala Sahu ₁ , Puneet K. Singh ₂ , Fooleswar Verma ₁ , Ankita Rai ₂ , Vijai K. Rai ₁

Affiliation

Herein, design and synthesis of ternary gold nanoparticles@ sulfourea‐functionalized reduced graphene oxide (Gold‐NPs@SFG) is reported. It involves interaction of ‘sulfourea’ to the graphene sheets via amidation of edged carboxyls of graphene oxide with N‐terminals of sulfourea followed by association of Gold‐NPs. Sulfourea not only reduced the graphene oxide but interestingly, it is functionalized to graphene sheets via carbodiimide covalent junctions, which gives it local effect to increase the active surface area and excellent electrocatalytic properties. The prepared nanocomposite was characterized with SEM, TEM, FTIR, Raman, XRD, XPS and CV. Gold‐NPs@SFG was found to be more efficient electrocatalyst for the electrocatalytic oxidation of a drug ‘Acetaminophen’ using differential pulse voltammetry and it was employed as a highly sensitive and selective electrochemical sensor for the quantification of ‘Acetaminophen’ with the detection limit of 0.09 μM in the wide linear range of 1.2 to 300 μM.

中文翻译：

一种用于对乙酰氨基酚的新型基于三元石墨烯的纳米复合修饰电极

本文报道了三元金纳米粒子@硫磺脲官能化的氧化石墨烯（Gold-NPs @ SFG）的设计与合成。它涉及通过将氧化石墨烯的边缘羧基与磺基脲的N末端酰胺化，然后使Gold-NPs结合，使“磺基脲”与石墨烯片相互作用。Sulfourea不仅还原了氧化石墨烯，而且有趣的是，它还可以通过碳二亚胺共价键，使其具有局部作用，以增加活性表面积和出色的电催化性能。用SEM，TEM，FTIR，拉曼，XRD，XPS和CV对制备的纳米复合材料进行了表征。发现Gold-NPs @ SFG是使用差动脉冲伏安法对药物'对乙酰氨基酚'进行电催化氧化的更有效的电催化剂，它被用作高灵敏度和选择性的电化学传感器，用于定量'对乙酰氨基酚'的检测限为在1.2至300μM的宽线性范围内为0.09μM。

更新日期：2020-03-12

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