Research Article

Hematite Nanoparticles-Modified Electrode Based Electrochemical Sensing Platform for Dopamine

Figure 7

Cyclic voltammograms recorded at (a) bare GC and (b) α-Fe2O3 nanoparticle-modified electrode for 1 × 10−3 M of K3[Fe(CN)6] in 0.1 M KCl at different scan rates: 5–200 mVs−1. The plots of the anodic peak current versus scan rate1/2 obtained for the (c) bare GC and (d) α-Fe2O3 nanoparticle-modified electrodes.
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(a)
396135.fig.007b
(b)
396135.fig.007c
(c)
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(d)