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首页> 外文期刊>RSC Advances >Electropolymerization of cobalt tetraaminophthalocyanine at reduced graphene oxide for electrochemical determination of cysteine and hydrazine
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Electropolymerization of cobalt tetraaminophthalocyanine at reduced graphene oxide for electrochemical determination of cysteine and hydrazine

机译：石墨烯钴四氨基酞菁的电聚合电化学测定半胱氨酸和肼

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摘要

We describe a simple and elegant electropolymerization method to prepare highly stable tetraamino functionalized cobalt phthalocyanine (pTACoPc) at electrochemically reduced graphene oxide (RGO). The described method efficiently bridges the excellent physicochemical properties of RGO with the rich redox chemistry of TACoPc. Graphene oxide was electrochemically reduced to RGO at the electrode surface along with concominent electropolymerization of TACoPc. The electrochemical studies showed that RGO on pTACoP/GCE increased effective surface area, reduced charge transfer resistance and enhanced electrochemical signal. The RGO-pTACoPc film modified electrode exhibits excellent electrocatalytic ability to oxidize cysteine and hydrazine. To determine cysteine, the RGO-pTACoPc sensor displayed a linear concentration range of 50 nM to 2.0 mM, detection limit of 18.5 nM and sensitivity of 10.19 nA nM(-1) cm(-2). Besides, the sensor displayed a linear concentration range of 50 nM to 2.6 mM, detection limit of 10 nM and sensitivity of 1.62 nA nM(-1) cm(-2) to determine hydrazine. The electrocatalytic ability of RGO-pTACoPc shows better performance over other cobalt phthalocyanine derivatives. Furthermore, the described sensor exhibited long-term storage stability, good repeatability and reproducibility. The practical applicability of the sensor has been assessed in biological and water samples.
机译：我们描述了一种简单而优雅的电聚合方法，在电化学还原的石墨烯（RGO）下制备高度稳定的四氨基官能化钴酞菁（PTACOPC）。所描述的方法有效地桥接RGO的优异物理化学特性，TACOPC的富氧化还原化学。将石化氧化物在电极表面上电化学减少到RGO，随着TACOPC的结合电气聚合。电化学研究表明，PTACOP / GCE的RGO增加了有效表面积，降低电荷转移电阻和增强的电化学信号。 rgo-ptacopc膜改性电极具有出色的电催化能力，可氧化半胱氨酸和肼。为了测定半胱氨酸，RGO-PTACOPC传感器显示为50nm至2.0mm的线性浓度范围，检测限为18.5nm的18.5nm和10.19 na nm（-1）cm（-2）的灵敏度。此外，传感器显示为50nm至2.6mm的线性浓度范围，检测极限为10nm，敏感性为1.62纳nm（-1）cm（-2）以确定肼。 Rgo-Ptacopc的电催化能力显示出对其他钴酞菁衍生物的性能更好。此外，所描述的传感器表现出长期存储稳定性，良好的重复性和再现性。在生物和水样中评估了传感器的实际适用性。

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  • 来源
    《RSC Advances》 |2016年第44期|共7页
  • 作者

    Mani Veerappan; Huang Sheng-Tung; Devasenathipathy Rajkumar; Yang Thomas C. K.;

  • 作者单位

    Natl Taipei Univ Technol Dept Chem Engn &

    Biotechnol Taipei 10608 Taiwan;

    Natl Taipei Univ Technol Dept Chem Engn &

    Biotechnol Taipei 10608 Taiwan;

    Natl Taipei Univ Technol Dept Mat &

    Mineral Resources Engn Taipei 10608 Taiwan;

    Natl Taipei Univ Technol Dept Chem Engn &

    Biotechnol Taipei 10608 Taiwan;

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  • 正文语种 eng
  • 中图分类 化学;
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