Multifunctional Eco-Friendly Synthesis of ZnO Nanoparticles in Biomedical Applications

Abstract

This study describes an eco-friendly synthesis of ZnO nanoparticles using aqueous oat extract. The advanced electrochemical and optical features of green synthesized ZnONPs displayed excellent antibacterial activity, and exhibited an important role in pharmaceutical determinations. The formation of nanoscale ZnO was confirmed using various spectroscopic and microscopic investigations. The formed nanoparticles were found to be around 100 nm. The as-prepared ZnONPs were monitored for their antibacterial potential against different bacterial strains. The inhibition zones for ZnONPs were found as E. coli (16 mm), P. aeruginosa (17 mm), S. aureus (12 mm) and B. subtilis (11 mm) using 30 µg mL-1 sample concentration. Also, ZnONPs exhibited significant antioxidant effects 58 to 67 % with an average IC50 value of 0.88 ± 0.03 scavenging activity and 53 to 71 % (IC50 value 0.73 ± 0.05) against the DPPH and ABTS scavenging free radicals, respectively. The photocatalytic potential of ZnONPs for Rhodamine B dye degradation dye under UV irradiation was performed. The photodegradation process was carried out as a function of time-dependent and the complete degradation (nearly 98 %) with color removal after 120 min. Conclusively, the synthesized ZnONPs using oat biomass might provide a great promise in the future for biomedical applications.

Modern metal-catalyzed and organocatalytic methods for synthesis of coumarin derivatives: a review

“…Low cost, low waste, environmental friendliness, low corrosion, and catalyst recycling ability are the advantages of these catalytic reactions which have developed a cascade of innovative advancements in this area. 149,150…”

Green Synthesis by Zygophyllum Coccineum Leaves Extract for Preparing ZnO Nanoparticles, and Characteristics Study.

“…A perfect estimation of E important in predicting the photophysical and photochemical characteristics of semiconductor materials [28]. E g was been calculated by different methods: using an equation of energy as [29]: Eg= h. C/ ‫ג‬ -- ------------( Al-Wadi and Al-Mammar _____________________________________________________________________________________________________________ ________________________________________________ later in the fabrics industry to increase ultraviolet as used in various industries such as solar [11], electronics [12] antifungal, [13] concrete, [14], and photocatalysis [15], in the last years it was used as a food product additive to -NPs are odorsolid powders of zinc blende, hexagonal wurtzite crystals, and cubic crystals rock salt [18]. It has a wide band gap energy (~3.3 e.V) [19].…”

“…The semiconductor substances are distinguished by the presence of band gap energy Eg, which explained the energy required to excite the electron and move it from the valence band towards the conduction [27]. A perfect estimation of E g is important in predicting the photophysical and photochemical characteristics of semiconductor was been calculated by different methods: using an equation of energy as [29]: In this method Zygophyllum coccineum plant was used to synthesis zinc oxide nanoparticles. Zygophyllum coccineum plant was collected from the Shatrah city.…”