Figure 41.

Non-enzymatic glucose sensor based on Ag nanoparticles (NPs) on functionalized CNTs. (a) Scheme for the preparation of Ag NPs on metformin functionalized MWCNTs. (b) Amperometric response of the sensor to successive addition of different concentration of glucose in 0.1 M NaOH at a working potential of 0.70 V. Inset shows the plot of electrocatalytic peak current vs. concentration of glucose from 1.0 nM to 500 nM. (c) Amperometric response to a) 100 µM glucose and 400 µM of b) acetic acid, c) ethanol, d) ascorbic acid, e) uric acid, f) dopamine, g) L-Dopa, h) epinephrine, and i) L-tyrosine. Reproduced with permission from Ref. ⁵⁸⁸. Copyright 2016, Elsevier.