Physical characterization and dielectric properties of chitosan incorporated by zinc oxide and graphene oxide nanoparticles prepared via laser ablation route

Abstract

Zinc oxide and graphene oxide nanoparticles have been inserted into chitosan using a one-step laser ablation technique. Physical analysis of the prepared samples was carried out using various techniques. XRD patterns demonstrate the semicrystalline nature of Cs, with three hump peaks at 2θ = 11.52°, 2θ = 18.19°, and 2θ = 22.41° that were reduced when loaded with ZnO/GO nanoparticles at different laser ablation periods. The Fourier transform infrared (FTIR) spectra revealed a difference in the intensity of several bands when compared to the intensity of chitosan bands pure polymer. For this reason, it is possible that ZnO/GO nanoparticles interacted and bonded with Cs in semicrystalline regions. The optical energy gap was computed using UV–Vis measurements. The distribution of ZnO/GO NPs in the host polymer (chitosan) has manifested as white spots on the surfaces of the films, as shown by FE-SEM images. The A.C electrical conductivity, dielectric constant, and dielectric loss of Cs/ZnO/GO improved as the concentration of ZnO/GO NPs in the films increased. According to the studies, chitosan/zinc oxide nanoparticles have good optical properties, which could be employed in the development of novel energy devices.

Keywords

• FESEM
• Zinc oxide
• Graphene oxide
• Laser ablation
• FTIR
• AC conductivity