Comparative Study of the Ethanolic and Aqueous Avicennia marina Mangrove Extracts on the Biosynthesis of AgCl@TiO۲ Nanocomposite

The biosynthesis of nanomaterials is an important aspect of nanotechnology due to its cost-effective and eco-friendly procedure. The present study was carried out to fabricate AgCl@TiO۲ nanocomposite using the aqueous and ethanolic leaf extracts of Avicennia marina mangrove plant as a reducing and stabilizing agent (RSA). The effect of aqueous and ethanolic leaf extracts with different concentrations on the biosynthesis of AgCl@TiO۲ NanoParticles (NPs) was systematically studied by X-Ray Diffraction (XRD), field emission scanning electron microscopy (FE-SEM), Energy Dispersive Spectroscopy (EDS), UV-visible diffuse reflectance spectroscopy (UV-visible DRS), and Fourier Transform InfraRed (FT-IR) spectrometer. The results illustrated the successful synthesis of AgCl@TiO۲ nanocomposite without any impurity phase using the aqueous extract. AgCl NPs were uniformly distributed on the surface of TiO۲. The absorption intensity of AgCl@TiO۲ with a band gap energy of ۲.۹۵ was improved both in the UV and VL region and displayed stronger absorption compared with pure TiO۲. FT-IR analysis confirmed that the biosynthesized AgCl@TiO۲ by using aqueous leaf extract was not just an easy physical mixture of Ag and TiO۲ species but it was a molecular-level combining of Ti–O and Ag–O domains in the nanocomposite.

کلیدواژه ها:

Biosynthesis ، AgCl@TiO۲ ، Nanocomposite ، Avicennia marina ، Aqueous extract