用于测定维生素 C 的聚硫氨酸/SWCNT 纳米复合涂层电化学传感器

IF 1.4 4区 材料科学 Q4 BIOTECHNOLOGY & APPLIED MICROBIOLOGY Current Nanoscience Pub Date : 2024-02-28 DOI:10.2174/0115734137289697240216070503
Sangeetha Dhanapalan, Vasanth Magesh, Raji Atchudan, Sandeep Arya, Dhanraj Ganapathy, Deepak Nallaswamy, Ashok Sundramoorthy
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引用次数: 0

摘要

背景:电化学传感器可将生物或化学信息(如分析物浓度或生物分子(生化受体)相互作用)转化为电信号。本文介绍了用于抗坏血酸(维生素 C)电化学检测的聚硫氨酸/单壁碳纳米管(P-Th/SWCNT)复合材料的开发情况。方法:为了提高电化学性能,我们尝试在单壁碳纳米管(SWCNT)表面直接电聚合硫氨酸单体(一种重要的化学结构单元)。研究结果场发射扫描电子显微镜(FESEM)和能量色散光谱(EDS)结果表明,P-Th/SWCNT 形成了复杂的结构。证实了碳 (C)、氧 (O)、氮 (N) 和硫 (S) 成分的存在,这表明聚硫氨酸与 SWCNT 有效融合。此外,X 射线衍射(XRD)和傅立叶变换红外光谱(FTIR)也证实了复合材料的形成。利用循环伏安法检测了该复合材料的电化学行为。研究结论P-Th/SWCNT 复合材料对抗坏血酸的氧化具有优异的电催化活性。制备的 P-Th/SWCNT 复合改性传感器可以检测食品、医疗和药品样品中的抗坏血酸。
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Poly-Thionine/ SWCNT Nanocomposite Coated Electrochemical Sensor for Determination of Vitamin C
Background: The electrochemical sensors convert biological or chemical information, such as analyte concentration or a biomolecular (biochemical receptor) interaction, into electrical signals. In this paper, we describe the development of a poly-thionine/ single-walled carbon nanotube (P-Th/SWCNT) composite for the electrochemical detection of ascorbic acid (vitamin C). Methods: To improve electrochemical performance, we attempted to electro-polymerize the thionine monomers, an essential chemical building block, directly on the surface of singlewalled carbon nanotubes (SWCNT). Results: Field Emission Scanning electron microscopy (FESEM) and energy dispersive spectroscopy (EDS) results revealed that a complex structure of the P-Th/SWCNT was formed. The presence of carbon (C), oxygen (O), nitrogen (N), and sulfur (S) components was confirmed, which indicated the effective fusion of poly-thionine onto SWCNT. Moreover, the X-ray diffraction (XRD) and Fourier transform infrared (FTIR) spectroscopy confirmed the composite formation. Utilizing cyclic voltammetry, the composite's electrochemical behavior was examined. Conclusions: Excellent electrocatalytic activity towards the oxidation of ascorbic acid was shown by the P-Th/SWCNT composite. The as-prepared P-Th/SWCNT composite-modified sensor can detect ascorbic acid in food, medical, and pharmaceutical samples.
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来源期刊
Current Nanoscience
Current Nanoscience 工程技术-材料科学:综合
CiteScore
3.50
自引率
6.70%
发文量
83
审稿时长
4.4 months
期刊介绍: Current Nanoscience publishes (a) Authoritative/Mini Reviews, and (b) Original Research and Highlights written by experts covering the most recent advances in nanoscience and nanotechnology. All aspects of the field are represented including nano-structures, nano-bubbles, nano-droplets and nanofluids. Applications of nanoscience in physics, material science, chemistry, synthesis, environmental science, electronics, biomedical nanotechnology, biomedical engineering, biotechnology, medicine and pharmaceuticals are also covered. The journal is essential to all researches involved in nanoscience and its applied and fundamental areas of science, chemistry, physics, material science, engineering and medicine. Current Nanoscience also welcomes submissions on the following topics of Nanoscience and Nanotechnology: Nanoelectronics and photonics Advanced Nanomaterials Nanofabrication and measurement Nanobiotechnology and nanomedicine Nanotechnology for energy Sensors and actuator Computational nanoscience and technology.
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