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Electrodeposition of a 3D hierarchical porous flower-like cobalt-MWCNT nanocomposite electrode for non-enzymatic glucose sensing

机译:用于非酶促葡萄糖感测的3D层次多孔花样钴-MWCNT纳米复合电极的电沉积

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摘要

In this work, pure cobalt and a cobalt-MWCNT nanocomposite were electrodeposited on a mild steel substrate using an acetate bath. The surface morphology, elemental composition and the preferred orientation of pure cobalt and the cobalt-MWCNT nanocomposite were characterized using SEM, EDAX and XRD analysis. The SEM images of the Co-MWCNT composite exhibited as nanoflakes which are interconnected to form a 3D hierarchical porous flower-like morphology. MWCNTs are well incorporated into the matrix. XRD also confirmed the composite formation and the presence of CNTs. Cyclic voltammetry and chronoamperometric techniques were employed to characterize the electrocatalytic activity of the modified electrode towards glucose detection. The results revealed that the proposed sensing material synergistically acts as an electrocatalyst for the electrooxidation of glucose with enhanced sensitivity and a lower detection limit. The fast current response signals, wide linear range and higher selectivity make the cobalt-MWCNT nanocomposite electrode a favorable candidate for practical glucose detection applications.
机译:在这项工作中,使用乙酸盐浴将纯钴和钴-MWCNT纳米复合材料电沉积在低碳钢基板上。使用SEM,edax和XRD分析表征了纯钴和钴-MWCNT纳米复合材料的表面形态,元素组成和优选取向。作为纳米薄饼的Co-MWCNT复合材料的SEM图像互连以形成3D层次多孔花样形态。 mwcnts良好地结合到基质中。 XRD还证实了复合形成和CNT的存在。使用循环伏安法和计时率技术,以表征改性电极对葡萄糖检测的电催化活性。结果表明,所提出的传感材料协同作用为具有增强灵敏度和较低检测极限的葡萄糖的电氧化和较低的检测极限。快电流响应信号,宽线性范围和更高的选择性使得Cobalt-MWCNT纳米复合电极成为实际葡萄糖检测应用的有利候选者。

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  • 来源
    《RSC Advances》 |2015年第91期|共7页
  • 作者单位

    CSIR Cent Electrochem Res Inst Electroplating &

    Met Finishing Technol Div Karaikkudi 630006 Tamil Nadu India;

    CSIR Cent Electrochem Res Inst Electroplating &

    Met Finishing Technol Div Karaikkudi 630006 Tamil Nadu India;

    CSIR Cent Electrochem Res Inst Electroplating &

    Met Finishing Technol Div Karaikkudi 630006 Tamil Nadu India;

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