Investigations of structural, optical, dielectric and antimicrobial properties of Zirconia-Vanadia nanocomposite

Abstract

Zirconia-Vanadia nanocomposite synthesized by coprecipitation-calcination technique was prepared. XRD plots confirmed the presence of both materials in the composite. SEM and TEM pictures showed the formation of spherical and needle shaped structures. EDX spectrum confirms the presence of both elements. A.C conductivity plots show a linear variation with frequency. Impedance analysis suggested a decrease in impedance with increase in temperature. Modulus analysis showed a temperature dependent relaxation process. The material has a high dielectric constant of about 2500, making it suitable for use as a gate dielectric. Antimicrobial activity analysis suggested the efficacy of the composite against three types of bacteria.

Keywords

• Nanocomposite
• TEM
• Dielectric properties
• Impedance studies
• Electric modulus