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Polyaniline intercalated with Ag1.2V3O8 nanorods based electrochemical sensor
Karunamoorthy Saravanakumar,Vellaichamy Balakumar,Kadarkarai Govindan,Am Jang,Giehyeon Lee,Velluchamy Muthuraj 한국공업화학회 2020 Journal of Industrial and Engineering Chemistry Vol.91 No.-
A sensitive electrochemical based sensor was demonstrated for the determination of uric acid (UA) bypolyaniline (PANI) intercalated with Ag1.2V3O8-PANI (AgV-PANI). In this study, a simple ultrasonicationmethod has been employed to prepare AgV-PANI nanorods and the crystalline structure, surfacetopography, and elemental status of the as-synthesized nanocomposites were investigated using variousanalytical techniques. These analyses revealed the formation of a good crystalline and50 nm diameterwith length of100–300 nm AgV-PANI nanorod-like structure. Distinguishable PANI particles wereapparently placed on the Ag1.2V3O8 surface, and the surface of the nanorods was exceptionally smooth. The incorporation of PANI with Ag1.2V3O8 significantly improved the charge-transfer characteristics andenhanced the peak current in the cyclic voltammogram compared with the case of pristine Ag1.2V3O8nanorods. The lowest threshold of UA detection was observed to be 0.017 mM (S/N = 3), and the detectionrange was wide (0.1–10 mM). Moreover, the AgV-PANI-modified electrode demonstrated excellentselectivity and sensitivity towards UA detection in the existence of other biologically importantinterferents. The present study confirmed that the proposed Ag1.2V3O8-PANI based electrochemicalsensor has good reproducibility and a long shelf life (40 d).