Size-Dependent Chlorinated Nitrogen-Doped Carbon Nanotubes: Their Use as Electrochemical Detectors for Catechol and Resorcinol

Figure 7

(a and b) Effect of pH on the anodic peak current and peak potential of CC (0.2 mM) and RS (0.8 mM) in 0.1 M PBS at GCE/chlorinated N-doped CNTs (2 : 1), (c) comparison of DPV curves obtained using pH 2 and 5 buffer solutions in the presence of 0.2 mM CC, and (d) cyclic voltammogram recorded at bare GCE, chlorinated N-doped CNTs (1 : 2)/GCE, chlorinated N-doped CNTs (2 : 1)/GCE at a scan rate of 50 mVs⁻¹ in 0.1 M PBS of pH 2 containing 0.2 mM CC and 0.2 mM RS.

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