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Polypyrrole/tannin biobased nanocomposite with enhanced electrochemical and physical properties

机译:聚吡咯/单宁Biobased纳米复合材料,具有增强的电化学和物理性质

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摘要

In this research, tannin (TA) extracted from Acacia mangium and a cationic surfactant, cetyltrimethylammonium bromide (CTAB), were used to modify and enhance the physical and electrochemical properties of a polypyrrole (PPy) composite. Brunauer-Emmett-Teller (BET) analysis presented a higher degree of surface area and porosity for the PPy/TA/CTAB nanocomposite. A highly porous and rod like structure with a lumpy surface was observed for PPy/TA prepared in the presence of CTAB by Field Emission Scanning Electron Microscopy (FESEM) and Transmission Electron Microscopy (TEM). Cyclic voltammograms of the modified SPE electrode using PPy/TA/CTAB displayed an enhanced current response compared to the electrode modified with only PPy or PPy/TA. Electrochemical Impedance Spectroscopy (EIS) exhibited a lower value of charge transfer resistance (Rct) and higher electron transfer for the modified electrode, making the nanocomposite a promising candidate for biosensor application.
机译:在该研究中,使用从金合欢曼尼利和阳离子表面活性剂,甲酰基三甲基溴化铵(CTAB)中提取的单宁(TA)来改变和增强聚吡咯(PPY)复合材料的物理和电化学性质。 Brunauer-Emmett-Teller(BET)分析呈现了PPY / TA / CTAB纳米复合材料的较高程度的表面积和孔隙率。 通过现场发射扫描电子显微镜(FESEM)和透射电子显微镜(TEM),观察到在CTAB存在下制备的PPY / TA具有块状表面的高度多孔和棒状结构。 与仅用PPY或PPY / TA改性的电极相比,使用PPY / TA / CTAB的改进的SPE电极的循环伏安图显示了增强的电流响应。 电化学阻抗光谱(EIS)表现出较低的电荷转移电阻值(RCT)和改性电极更高的电子转移,使纳米复合材料成为生物传感器应用的有希望的候选者。

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  • 来源
    《RSC Advances》 |2018年第6期|共8页
  • 作者单位

    Shiraz Univ Dept Chem Engn Shiraz 7134851154 Iran;

    Univ Putra Malaysia Fac Sci Dept Chem Upm Serdang 43400 Selangor Malaysia;

    Univ Putra Malaysia Fac Sci Dept Chem Upm Serdang 43400 Selangor Malaysia;

    Univ Putra Malaysia Inst Trop Forestry &

    Forest Prod Upm Serdang 43400 Selangor Malaysia;

    Shiraz Univ Dept Chem Engn Shiraz 7134851154 Iran;

    Malaysian Timber Ind Board Fiber Dev Ctr Banting Selangor Malaysia;

    Shiraz Univ Dept Chem Engn Shiraz 7134851154 Iran;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
  • 关键词

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