Abstract
In this study, a novel poly(o-toluidine)V(III)molybdate (POT-V(III)MoO4) nanocomposite was prepared using a simple sol–gel strategy. The in situ polymerization of ortho-toluidine in the V(III)MoO4 framework was achieved by oxidation with ammonium persulfate. The material obtained was characterized by various techniques comprising scanning electron microscopy, Fourier transform-infrared spectroscopy, thermogravimetric analysis, X-ray diffraction, and X-ray photoelectron spectroscopy. Dielectric and AC conductivity studies were conducted to determine the physicochemical state of POT-V(III)MoO4. The dielectric parameters ε′, ε″, tanδ, and σAC change with the capacity. The relationships between the dielectric properties ε′, ε″, tan δ, and AC conductivity (σAC) with the recurrence showed that the scattering was due to the Maxwell–Wagner type of interfacial polarization. Antibacterial tests of POT-V(III)MoO4 were performed using Gram-positive (Enterococcus faecalis) and Gram-negative (Serratia marcescens) bacteria, and the results indicated its excellent antimicrobial activity against both bacterial strains. Assessments of the antimicrobial activities in a liquid medium and on the solid surface of growth medium showed that a bacterial inhibition zone developed, and POT-V(III)MoO4 was more effective compared with the standard drug amoxicillin.
Preparation of the composite. [Display omitted]
•POT-V(III)MoO4 nanocomposite synthesized using facile method.•Strong antibacterial effects on Gram-positive and Gram-negative bacteria.•POT-V(III)MoO4 more effective than amoxicillin.•POT-V(III)MoO4 composite has high AC conductivity and optical properties.•Useful composite for applications in biological signaling devices.