Highly efficient non-enzymatic electrochemical glucose sensor based on carbon nanotubes functionalized by molybdenum disulfide and decorated with nickel nanoparticles (GCE/CNT/MoS2/NiNPs)

IF 6.5 Q1 BIOTECHNOLOGY & APPLIED MICROBIOLOGY

Sensors and Actuators Reports Pub Date : 2023-06-01 DOI:10.1016/j.snr.2022.100136

Balla Fall , Diébel Dado Sall , Miryana Hémadi , Abdou Karim Diagne Diaw , Modou Fall , Hyacinthe Randriamahazaka , Sabu Thomas

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引用次数: 14

Abstract

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.

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基于二硫化钼功能化碳纳米管和纳米镍修饰(GCE/CNT/MoS2/NiNPs)的高效无酶电化学葡萄糖传感器

由于制药、临床和工业环境对敏感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人们的关注。碳纳米管(Carbon nanotubes, CNTs)由于其大表面积和有趣的物理和电化学特性，作为一类特殊的有效电极物质在电化学传感中得到了广泛的应用。镍具有较高的催化活性，是一种有吸引力的葡萄糖电氧化过渡金属。本研究通过水热反应制备了不同碳纳米管/MoS2/NiNPs比例的纳米复合材料。采用x射线衍射(XRD)、拉曼光谱(Raman spectroscopy)和傅里叶变换红外光谱(FTIR)对CNT/MoS2纳米复合材料进行了表征，并用场发射扫描电镜(FESEM)对其形貌和组成进行了表征。用循环伏安法和安培法研究了制备的纳米材料在碱性介质中对葡萄糖氧化的电催化活性。该传感器的灵敏度为1212 μA·mM−1·cm−2，线性范围宽(0.05 ~ 0.65 mM)，检测阈值低(0.197 μM)，响应时间短(3 s)。其优异的催化活性和低廉的成本使其在葡萄糖的直接传感中具有很大的应用前景。

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来源期刊

Sensors and Actuators Reports Multiple-

CiteScore

9.60

自引率

0.00%

发文量

审稿时长

49 days

期刊介绍： Sensors and Actuators Reports is a peer-reviewed open access journal launched out from the Sensors and Actuators journal family. Sensors and Actuators Reports is dedicated to publishing new and original works in the field of all type of sensors and actuators, including bio-, chemical-, physical-, and nano- sensors and actuators, which demonstrates significant progress beyond the current state of the art. The journal regularly publishes original research papers, reviews, and short communications. For research papers and short communications, the journal aims to publish the new and original work supported by experimental results and as such purely theoretical works are not accepted.