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Highly efficient non-enzymatic electrochemical glucose sensor based on carbon nanotubes functionalized by molybdenum disulfide and decorated with nickel nanoparticles (GCE/CNT/MoS2/NiNPs)
Sensors and Actuators Reports Pub Date : 2022-12-15 , DOI: 10.1016/j.snr.2022.100136
Balla Fall , Diébel Dado Sall , Miryana Hémadi , Abdou Karim Diagne Diaw , Modou Fall , Hyacinthe Randriamahazaka , Sabu Thomas

Glucose detection using sensing materials has lately received interest due to the increased demand for sensitive and selective glucose sensors in pharmaceutical, clinical, and industrial settings. Carbon nanotubes (CNTs) are used intensively as a specific class of effective electrode substances in electrochemical sensing due to their large surface area and interesting physical and electrochemical characteristics. Nickel is an attractive transition metal for glucose electrooxidation with high catalytic activity. In this study, CNT/MoS2/NiNPs nanocomposites with different CNT/MoS2 ratios have been prepared by a hydrothermal reaction. The CNT/MoS2 nanocomposites were characterized by X-ray diffraction (XRD), Raman spectroscopy and Fourier transform infrared spectroscopy (FTIR), and their morphology and composition were characterized by field emission scanning electron microscopy (FESEM). Electrocatalytic activity of the as-prepared nanomaterials towards glucose oxidation was investigated by cyclic voltammetry and amperometry in alkaline media. An excellent sensitivity value of 1212 μA·mM−1·cm−2 with a wide linear range (0.05–0.65 mM), a low detection threshold of 0.197 μM and a short response time (3 s) were achieved by the hybrid CNT/MoS2/NiNPs sensor. Its superior catalytic activity and low cost make this hybrid very promising for applications in the direct sensing of glucose.



中文翻译:

基于二硫化钼功能化和镍纳米粒子修饰的碳纳米管的高效非酶促电化学葡萄糖传感器(GCE/CNT/MoS2/NiNPs)

由于制药、临床和工业环境中对灵敏和选择性葡萄糖传感器的需求增加,使用传感材料进行葡萄糖检测最近受到了关注。碳纳米管 (CNT) 由于其较大的表面积和有趣的物理和电化学特性,在电化学传感中被广泛用作一类特定的有效电极物质。镍是具有高催化活性的葡萄糖电氧化的有吸引力的过渡金属。在这项研究中,已经通过水热反应制备了具有不同CNT/MoS 2比率的CNT/MoS 2 /NiNPs纳米复合材料。CNT/MoS 2通过X射线衍射(XRD)、拉曼光谱和傅里叶变换红外光谱(FTIR)对纳米复合材料进行了表征,并通过场发射扫描电子显微镜(FESEM)对其形貌和组成进行了表征。通过在碱性介质中循环伏安法和安培法研究了所制备的纳米材料对葡萄糖氧化的电催化活性。杂化 CNT/ 实现了1212 μA·mM −1 ·cm −2的出色灵敏度值和宽线性范围 (0.05–0.65 mM)、0.197 μM 的低检测阈值和短响应时间 (3 s) MoS 2 /NiNPs传感器。其卓越的催化活性和低成本使这种杂化物非常有希望用于直接检测葡萄糖。

更新日期:2022-12-15
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