The metallic nanoparticles are considered as the most promising compounds as they contain remarkable antibacterial properties due to their large surface area to volume ratio. There are many interest for researchers in this area due to the growing microbial resistance against metal ions, antibiotics and the development of resistant strains [1]. Among the all novel metal nanoparticles, silver nanoparticles are the arch products from the field of nanotechnology which have gained boundless interests because of their unique properties such as antibacterial and antifungal activity as well as their catalytic properties [2]. In the present study, pAni@Ag nanocomposites with Ag concentration were synthesized by polymerization techniques using Ammonium persulfate as an oxidising agent. Aniline and Ammonium persulfate were prepared in 1M HCL. For the synthesis of pAni@Ag nanoparticles, silver ions were loaded onto the surface of the modified polyaniline and reduced to silver nanoparticles by addition NaBH4. For the synthesise of pAni@Mo, complex MoO2(acac)2 was loaded onto the surface of modified polyaniline nanoparticles. Antimicrobial effects of pAni@Ag and pAni@Mo samples were tested against Bacillus subtilis and Pseudomonas syringae to evaluate their antibacterial activity and also against Fusarium graminearum and Rhizoctonia solani for assessment of their antifungal activity. The obtained biological results showed that, both nanocomposite have shown excellent antibacterial and antifungal activity against abovementioned organisms.The structure and properties of pAni@Ag and pAni@Mo nonocomposites were assessed by XRD, FT-IR, ICP, CHNOS and TGA.

Keywords