Fabrication of Prussian Blue/Multi-Walled Carbon Nanotubes Modified Glassy Carbon Electrode for Electrochemical Detection of Hydrogen Peroxide.

摘要

Prussian blue nanoparticles synthesized from K4[Fe(CN)6]3H2O and Fe(NO3)3.9H2O, werecharacterized by Fourier transform infrared (FT-IR), X-ray diffraction (XRD), Energy dispersivespectroscopy (EDS), Scanning electron microscopy (SEM), and Raman spectroscopy. Prussian bluenanoparticles were modified on a glassy carbon electrode as a mediator of carbon nanotube; threeelectrodes GC-Bare, GC-PB and GC-CNT-PB were fabricated. Cyclic voltammetry were employed tocharacterize electrodes at pH ranges of (3 - 7.4) in 0.1M phosphate buffer solution, in the absence orpresence of 25 M of H2O2. Compared with Prussian blue (PB) modified on glassy carbon electrode(GC-PB), the GC-CNT-PB electrode exhibits much electrochemical stability, much wider pH rangeand high response currents for the reduction of hydrogen peroxide (H2O2).