| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1440848 | Synthetic Metals | 2014 | 7 Pages |
•V2O5@PANI nanohybrid was synthesized by oxidative polymerization method.•V2O5@PANI exhibits enhanced dopamine sensing property.•Enhanced activity is due to the synergetic effect of V2O5 and PANI and plausible mechanism has been proposed.•The proposed sensor showed good sensitivity, stability and repeatability.
In the present study, V2O5@polyaniline (V2O5@PANI) nanohybrid was prepared by oxidative polymerization approach in presence of colloidal V2O5. X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), UV-Visible spectroscopy, scanning electron microscopy (SEM) and transmission electron microscopy (TEM) reveal that there is an interaction happened between V2O5 and PANI. Plausible explanation for the formation of V2O5@PANI nanohybrid has been explained. The electrochemical oxidation of DA was examined by cyclic voltammetry (CV) and chronoamperometry (CA). The V2O5@PANI modified GC electrode (V2O5@PANI/GCE) showed electrocatalytic oxidation of DA in the linear range from 6.6 × 10−6 M to 1.1 × 10−4 M with the detection limit of 3.9 × 10−5 M. The proposed sensor method showed good sensitivity, stability and repeatability.
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