Preparation and characterization of V2O5 and V2O5/PANI nanocomposite by laser ablation technique in liquid

In this work, nanocomposite formed by vanadium pentoxide and polyaniline (V2O5/PANI) was synthesized by laser ablation in water. The V2O5 materials shown interlayer spacing shift from 7.95 to 13.6 Å due to polyaniline intercalation indicating a substitution of water molecules for polyaniline chains. Also, it was observed altering morphology samples according to the presence of H2O2 during the ablation process. The polymer growth is oriented parallel to V2O5 lamellae in the V2O5/PANI samples while fibers was observed in V2O5(H2O2)/PANI. The Raman analysis showed vibrational modes of V2O5 and a characteristic shift in the signal that correspond to the interaction of two layers units VO4− in composite PANI/V2O5. Cyclic voltammetry measurements disclose a displacement of redox pairs of polyaniline as an indication that V2O5 and polyaniline are interacting tightly and exhibit most intense current peak. This behavior is also observed in the XRD and UV visible absorption measurements.