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基于氢氧化钴功能化碳纳米管的非酶电化学葡萄糖传感器的性能评估。

Evaluation of a Non-Enzymatic Electrochemical Sensor Based on Co(OH)-Functionalized Carbon Nanotubes for Glucose Detection.

作者信息

Bolaños-Mendez Diego, Fernández Lenys, Uribe Rafael, Cunalata-Castro Alisson, González Gema, Rojas Isamara, Chico-Proano Andrés, Debut Alexis, Celi Luis Alberto, Espinoza-Montero Patricio

机构信息

Escuela de Ciencias Químicas, Pontificia Universidad Católica del Ecuador, Quito 170525, Ecuador.

Departamento de Ingeniería Química, Escuela Politécnica Nacional, Quito 170525, Ecuador.

出版信息

Sensors (Basel). 2024 Dec 2;24(23):7707. doi: 10.3390/s24237707.

DOI:10.3390/s24237707
PMID:39686245
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11644899/
Abstract

This work reports on the assessment of a non-hydrolytic electrochemical sensor for glucose sensing that is developed using functionalized carbon nanotubes (fCNTs)/Co(OH). The morphology of the nanocomposite was investigated by scanning electron microscopy, which revealed that the CNTs interacted with Co(OH). This content formed a nanocomposite that improved the electrochemical characterizations of the electrode, including the electrochemical active surface area and capacitance, thus improving sensitivity to glucose. In the electrochemical characterization by cyclic voltammetry and chronoamperometry, the increase in catalytic activity by Co(OH) improved the stability and reproducibility of the glucose sensor without the use of enzymes, and its concentration range was between 50 and 700 μmol L. The sensor exhibited good linearity towards glucose with LOD value of 43.200 µmol L, which proved that the Co(OH)-fCNTs composite is judicious for constructing cost effective and feasible sensor for glucose detection.

摘要

这项工作报道了一种用于葡萄糖传感的非水解电化学传感器的评估，该传感器是使用功能化碳纳米管（fCNTs）/Co(OH) 开发的。通过扫描电子显微镜研究了纳米复合材料的形态，结果表明碳纳米管与Co(OH) 相互作用。该成分形成了一种纳米复合材料，改善了电极的电化学特性，包括电化学活性表面积和电容，从而提高了对葡萄糖的灵敏度。在循环伏安法和计时电流法的电化学表征中，Co(OH) 催化活性的提高改善了葡萄糖传感器的稳定性和重现性，且无需使用酶，其浓度范围在50至700 μmol L之间。该传感器对葡萄糖表现出良好的线性关系，检测限为43.200 µmol L，这证明Co(OH)-fCNTs复合材料对于构建用于葡萄糖检测的经济高效且可行的传感器是明智的。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/57e5/11644899/bb36f4af597a/sensors-24-07707-g014.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/57e5/11644899/bc6a3f4f1908/sensors-24-07707-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/57e5/11644899/a88cde73e45c/sensors-24-07707-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/57e5/11644899/90590a0b40e8/sensors-24-07707-g010.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/57e5/11644899/bb36f4af597a/sensors-24-07707-g014.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/57e5/11644899/ca1878b90017/sensors-24-07707-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/57e5/11644899/2c261f67cb08/sensors-24-07707-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/57e5/11644899/4a0fca965ed6/sensors-24-07707-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/57e5/11644899/dc89573b9e36/sensors-24-07707-g004.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/57e5/11644899/33cca76e14ba/sensors-24-07707-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/57e5/11644899/bde20ef3dd4a/sensors-24-07707-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/57e5/11644899/bc6a3f4f1908/sensors-24-07707-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/57e5/11644899/a88cde73e45c/sensors-24-07707-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/57e5/11644899/90590a0b40e8/sensors-24-07707-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/57e5/11644899/d28ffa70d6fb/sensors-24-07707-g011.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/57e5/11644899/bb36f4af597a/sensors-24-07707-g014.jpg

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