Biosynthesis of Titanium Dioxide Nanoparticles by the Aqueous Extract of <i>Juglans regia</i> Green Husk

Abstract

A straightforward, non-toxic, economical, and environmentally safe method for nanoparticle (NP) synthesis is NP biosynthesis. An aqueous extract of the green husk of Juglans regia (J. regia) was used to produce titanium dioxide NPs (TiO2 NPs) in this study. The green husk of walnuts is an agricultural waste that may contain valuable compounds. Numerous studies have demonstrated the potential of this inexpensive natural material as a source of phenolic compounds with antiradical and antimicrobial properties. The NPs were characterized using UV-Vis spectroscopy, X-ray diffraction, FT–IR spectroscopy, DLS, and FE-SEM. The UV–Vis spectrum displayed a significant peak at 334 nm. The as-fabricated TiO2 NPs had two distinct phases that ranged in size from 19 to 23 nm on average. FT-IR analysis revealed the Ti-O bond. FE-SEM and EDX were used to characterize the spherical surface morphology and the Ti and O elemental configuration of the NPs, respectively. TiO2 NPs are viewed as incredibly important nanomaterials as a result of their security, high strength, and photocatalytic properties. Accordingly, TiO2 NPs are valuable in beauty-care products, substance detection, wastewater treatment, antimicrobial applications, hydrogen creation, and lithium-ion batteries.

Keywords

• biosynthesis
• green synthesis
• titanium dioxide
• <i>Juglans regia</i> green husk
• anatase