Facile synthesis route for chitosan nanoparticles doped with various concentrations of the biosynthesized copper oxide nanoparticles: Electrical conductivity and antibacterial properties

Abstract

Green and sustainable synthesis has proven a significant efficiency for the fabrication of nanoparticles. Herein, guava leaves extract rich in carbohydrates, polyphenols, and other natural components were used to prepare copper oxide nanoparticles (CuONPs) without harsh conditions. Then CuONPs with different concentrations were blended with as-prepared ion tropically chitosan nanoparticles (CHNPs). The findings demonstrated the successful preparation of CuONPs in small spherical size, implying that guava leaves extract can act as a potential power for such preparation. In addition, CHNPs acted as a stabilizing agent for CuONPs, enhancing the stability and preventing the agglomeration of these nanoparticles to cluster particles. As the frequency increased, the dielectric constant and dielectric loss activity decreased. When the contents of CuONPs grew, the electrical conductivity increased. The antibacterial of the nanocomposites was hard against two pathogenic microbes, Escherichia coli and Pseudomonas aeruginosa. Thus, CuONPs-doped CHNPs may indeed be produced using this approach without needing organic solvents, costly raw ingredients, or complex equipment to enhance the electrical conductivity and antibacterial features of CHNPs. Apart from its simplicity, this approach produces nanoparticles with ease, flexibility, cost-effectiveness, and without contaminations or pollution.