中空结构CuO/NiO复合纳米纤维材料的制备及用于葡萄糖检测

Preparation of hollow CuO/NiO composite nanofibers and its application in glucose detection

  • 摘要: 为进一步提升Cu/Ni材料对葡萄糖检测的灵敏度,采用静电纺丝技术制备了硝酸铜/醋酸镍复合聚乙烯吡咯烷酮(Cu(NO3)2/Ni(CH3COO)2/PVP@PVP)纳米纤维膜,经过干燥处理,最后用煅烧方法得到具有中空结构的氧化铜复合氧化镍纳米纤维(CuO/NiO NFs)。通过扫描式电子显微镜、X射线衍射仪器以及X射线光电子能谱分析等对中空结构的CuO/NiO NFs材料表面形貌、组成和结构进行了表征;并探讨了不同比例的中空结构的CuO/NiO NFs对葡萄糖的电催化氧化的影响。结果表明,具有中空结构CuO/NiO NFs所构建的非酶葡萄糖电化学传感器有着极高的灵敏度(778.73 μA mmol/L −1 cm−2)、低的检出限(1.2 μmol/L)和宽的线性范围(10 μmol/L~ 13 mmol/L),并且在选择性、重复性、重现性以及长期稳定性方面也取得了良好的效果。此传感器为复合型无酶葡萄糖传感材料的研究提供了新的设计思路。

     

    Abstract: To further enhance the sensitivity of Cu/Ni materials for glucose detection, copper nitrate/nickel acetate composite polyvinylpyrrolidone (Cu(NO3)2/Ni(CH3COO)2/PVP@PVP) nanofibrous membranes were prepared by electrostatic spinning technique, dried, and finally calcined to obtain copper oxide composite nickel oxide nanofibers (CuO/NiO NFs) with hollow structure. The surface morphology, composition and structure of the hollow-structured CuO/NiO NFs materials were characterized by scanning electron microscopy, X-ray diffraction apparatus and X-ray photoelectron spectroscopy; and the effects of different ratios of hollow-structured CuO/NiO NFs on the electrocatalytic oxidation of glucose were investigated. The results demonstrate that the non-enzymatic glucose electrochemical sensor constructed with hollow-structured CuO/NiO NFs exhibits exceptional sensitivity (778.73 μA mmol/L −1 cm−2), a low detection limit (1.2 μmol/L), and a broad linear range (10 μmol/L to 13 mmol/L). Additionally, the sensor demonstrates satisfactory selectivity, repeatability, reproducibility, and long-term stability. This sensor provides a new design idea for the study of composite enzyme-free glucose sensing materials.

     

/

返回文章
返回