Carbon Nanotube-Based Electrochemical Sensors: Principles and Applications in Biomedical Systems
Figure 12
(a) TEM micrograph of SWNTs in the presence of Pt nanoparticles. Inset: AFM tapping-mode phase image (size, 1 m 1 m; data scale, 20 nm) of one SWNTs in the presence of Pt nanoparticles. (b) Performance of electrode in amperometric detection of low concentrations of hydrogen peroxide at 0.55 V versus AgAgCl (3 M NaCl). The inset (left) shows detection limit of 25 nM with S/N = 3. Inset (right) shows calibration curve for H2O2 concentrations between 25 nM and 10 M. [Adapted with permission from Hrapovic et al. [73], Anal. Chem. , 76, 1083 (2004). Copyright 2004, American Chemical Society.]
