Determination of 4-nitrophenol at Iron Phthalocyanine Decorated Graphene Nanosheets Film Modified Electrode

Rajkumar Devasenathipathy; Veerappan Mani; Shen-Ming Chen; Kesavan Manibalan; Sheng-Tung Huang

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Determination of 4-nitrophenol at Iron Phthalocyanine Decorated Graphene Nanosheets Film Modified Electrode

机译：铁酞菁修饰石墨烯纳米片薄膜修饰电极的测定4-硝基苯酚

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We described a sensitive electrochemical sensor for the determination of 4-nitro phenol (4-NP) atgraphene nanosheets (GNS) decorated iron phthalocyanine (FePc) film modified electrode. GNSsupported FePc composite was prepared by simple chemical reduction method and its formation wasconfirmed by scanning electron microscopy and energy-dispersive X-ray spectroscopy methods. GNS- FePc composite film modified glassy carbon electrode (GCE) has been prepared which exhibitedexcellent electrocatalytic ability towards electrochemical reduction of 4-NP in terms of lessoverpotential and enhanced peak currents. The influence of pH of the supporting electrolyte to thereduction of 4-NP has been investigated. Different scan rate studies has revealed that the reduction of4-NP occurring at the GNS-FePc/GCE is diffusion controlled process. The GNS-FePc film modifiedGCE exhibited excellent electrocatalytic parameters such as wide linear range, high sensitivity and lowdetection limit. Practical feasibility of the sensor has been assessed in human urine samples. Moreover,the sensor has shown excellent stability, repeatability and reproducibility.

机译：我们描述了一种灵敏的电化学传感器，用于测定4-硝基苯酚（4-NP）石墨烯纳米片（GNS）装饰的酞菁铁（FePc）膜修饰电极。采用简单的化学还原法制备了GNS负载的FePc复合材料，并通过扫描电子显微镜和能谱X射线能谱法证实了其形成。已制备出GNS-FePc复合膜修饰玻碳电极（GCE），该电极在降低过电位和增加峰值电流方面表现出优异的对4-NP电化学还原的电催化能力。已经研究了支持电解质的pH值对4-NP还原的影响。不同的扫描速率研究表明，GNS-FePc / GCE处4-NP的减少是扩散控制过程。 GNS-FePc膜修饰的GCE表现出优异的电催化参数，例如宽线性范围，高灵敏度和低检测限。该传感器的实际可行性已在人体尿液样本中进行了评估。此外，该传感器还具有出色的稳定性，可重复性和可重复性。

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《International Journal of Electrochemical Science》 |2015年第2期|共9页
作者
Rajkumar Devasenathipathy; Veerappan Mani; Shen-Ming Chen; Kesavan Manibalan; Sheng-Tung Huang;
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Determination of 4-nitrophenol at Iron Phthalocyanine Decorated Graphene Nanosheets Film Modified Electrode

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