Shabbir Syeda Ammara, Tariq Sana, Ashiq M Gul Bahar, Khan Waqar A
Department of Physics, Forman Christian College (A Chartered University), Lahore 54600, Pakistan
Department of Physics, Forman Christian College (A Chartered University), Lahore 54600, Pakistan.
Biosci Rep. 2019 Jun 25;39(6). doi: 10.1042/BSR20181983. Print 2019 Jun 28.
Diabetes mellitus is a debilitating disease that affects each and every organ of human body. Hence it is important to continuously monitor the glucose level throughout the day and night. Glucose sensors are in great demand due to a rapid increase in diabetic community. A strategy has been implemented here to fabricate silver nanoparticles (AgNPs) with the support of functionalized carbon nanotubes (f-CNTs). Silver/carbon nanotubes (Ag/CNTs) nanocomposite electrode have been prepared by electrochemical process on Fluorine doped tin oxide (FTO) glass, by varying silver (Ag) concentrations for non-enzymatic glucose sensor. The variable Ag concentration in the morphology of Ag/CNTs nanocomposite has influenced the electrical conductivity, oxidation and reduction potential and electrochemical activity of glucose. Highest current density and good electrocatalytic activity for electrodes are obtained at 70 mM concentration of silver in Ag/CNTs composite. The present study indicates that the Ag/CNTs electrode is a possible substitute of the expensive glassy carbon electrode for enzyme-free glucose sensors.
糖尿病是一种使人衰弱的疾病，会影响人体的各个器官。因此，昼夜持续监测血糖水平很重要。由于糖尿病患者群体迅速增加，对葡萄糖传感器的需求很大。本文实施了一种策略，在功能化碳纳米管（f-CNTs）的支持下制备银纳米颗粒（AgNPs）。通过电化学方法在氟掺杂氧化锡（FTO）玻璃上制备了银/碳纳米管（Ag/CNTs）纳米复合电极，用于非酶葡萄糖传感器，其中银（Ag）浓度有所变化。Ag/CNTs纳米复合材料形态中银浓度的变化影响了葡萄糖的电导率、氧化还原电位和电化学活性。在Ag/CNTs复合材料中银浓度为70 mM时，电极获得了最高电流密度和良好的电催化活性。本研究表明，Ag/CNTs电极可能是用于无酶葡萄糖传感器的昂贵玻碳电极的替代品。
