Covalent Bonded Graphene/Neutral Red Nanocomposite Prepared by One‐step Electrochemical Method and its Electrocatalytic Properties Toward Uric Acid,Electroanalysis

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Covalent Bonded Graphene/Neutral Red Nanocomposite Prepared by One‐step Electrochemical Method and its Electrocatalytic Properties Toward Uric Acid
Electroanalysis ( IF 2.7 ) Pub Date : 2018-02-20 , DOI: 10.1002/elan.201700817
Chang Liu ₁ , Zhikun Xu ₂ , Ling Liu ₃

Affiliation

A nanocomposite Graphene/Neutral Red (GNR) was fabricated via a facile electrochemical method by reducing graphene oxide (GO) and covalent bonding with NR on glassy carbon electrode (GCE) in one step. The bond between NR and graphene was characterized and demonstrated by X‐Ray Diffraction (XRD), X‐ray Photoelectron Spectroscopy (XPS), UV‐vis, Fourier Transform Infrared (FT‐IR). Electrochemical data revealed that the GNR resulted in a sensitivity enhancement of uric acid (UA) oxidation and CV curve shown that the catalytic oxidation current is linearly dependent on UA concentration in the range of 0.5–50 μM and 50 μM⁻² mM with a detection limit of 0.076 μM (S/N=3). The existing ions and physiological interferents were tested and they were nearly negligible or have a very small influence. Moreover, 2 weeks stability was obtained. By compared with other UA sensor, the present method is simple than previous report and the performance is better.

中文翻译：

一步电化学法制备的共价键合石墨烯/中性红纳米复合材料及其对尿酸的电催化性能

通过一种简便的电化学方法，通过还原氧化石墨烯（GO）并与NR在玻璃碳电极（GCE）上共价键合，制备了一种纳米复合石墨烯/中性红（GNR）。NR和石墨烯之间的键由X射线衍射（XRD），X射线光电子能谱（XPS），UV可见，傅立叶变换红外（FT-IR）表征和证明。电化学数据表明，GNR导致尿酸（UA）氧化的敏感性增强，CV曲线表明，催化氧化电流在0.5–50μM和50μM ^-2的范围内线性依赖于UA浓度检测限为0.076μM（S / N = 3）的mM。测试了现有的离子和生理干扰物，它们几乎可以忽略不计或影响很小。此外，获得了2周的稳定性。与其他UA传感器相比，该方法比以前的报告简单，性能更好。

更新日期：2018-02-20

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