Green Synthesis of Zinc Oxide Nanoparticles from (Punica granatum L) Pomegranate Aqueous Peel Extract

Abstract

<jats:p>The biosynthesis of Zinc oxide nanoparticles (ZnONPs) was done under alkaline conditions (pH 12) and temperature ≥ 80 ◦C. Mixing 10% of aqueous pomegranate peel extract (PPE) with 0.1 molar of zinc nitrate [Zn (NO3)2.6H2O], mixture was stirred at 70-80 ◦C for 15 minute and then left at room temperature overnight. The result was separated and centrifuged at 4000 rpm for 10 minutes. This process was repeated three times then the precipitate was collected and dried for using. ZnONPs were characterized by visual observation of color changes, estimate duration of synthesis compared to weight of ZnONPs was the result, UV-visible analysis, Fourier transform infrared (FT-IR), X- ray diffraction (XRD) and Scanning electron microscope (SEM). The results of this line, investigate the proper condition for ZnONPs synthesis. Result of FT-IR showed functional group related to Zn-O at (613.38 to 580.59 cm_1), whereas the result of X-RD at 2 theta diagnose the type of oxide formation as ZnO and determined particle size were found in range (20 - 30 nm). Finally, SEM image was shown crystals shape of ZnO nanoparticles. In conclusion, PPE acts as reducing agent used in synthesis of ZnO in Nano-scale size via easy and simple method.</jats:p>

Pomegranate Peel Extract-Mediated Green Synthesis of ZnO-NPs: Extract Concentration-Dependent Structure, Optical, and Antibacterial Activity

“…ese bands were highly overlapped with C-C absorbance around 1590 cm −1 and being almost invisible in the spectra of Z20 and Z30, possibly due to their sourced low contents. Absorption at 1590, 1591, and 1551 cm −1 in Z20, Z30, and Z40, respectively, is associated with C-C stretching band and its high intensity may indicate its abundance due to reduction of alkenes involved in the production of ZnO-NPs [24,25]. Besides, the bands at 1396 and 1336 cm −1 may characterize C-N stretching or CH and OH bending vibrations of aromatic structures.…”

Mathematical modeling and statistical approach in tannery wastewater treatment

“…The peaks at 1694 cm −1 aromatic ring, 3045 cm −1 for C‐H and weak peaks at 3850 cm −1 for H‐H stretching indicated the functional groups of green synthesized zinc oxide nanoparticles (William, 2013). The metal‐oxygen (ZnO) formation is observed between 500 and 900 cm –1 , and their stretching vibration was attributed to peak at 1621.42 and 596 cm −1 (Husain et al, 2019). Polyphenols and flavonoids of plant extract are not only involved in the oxidation of metal into metal oxide nanoparticles but also involved in the stabilization of synthesized nanoparticles (Figure 2).…”

The Use of Bio-Manufactured Nano-Zinc from Bacillus cereus in the Control of Dreshslera oryzae Fungus

“…The surface phenotype of nano zinc oxide manufactured from green tea by scanning electron microscopy (SEM). These particles were under different magnification forces, irregular and polymorphous among rectangular, spherical, radial, and cylindrical structures and the average size was between 29 -55 nm, As for [15], the result of the SEM was that most of the nanoparticles were hexagonal, and so was the result obtained by [16], most of them were hexagonal form of ZnO-NPs made from the extract of pomegranate peels.It was also found [3], that the sizes of nano zinc oxide ZnO-NPs manufactured from Lactobacillus Plantarum are spherical groups, and their sizes are less than 70 nm. The surface structure of bio-zinc oxide nanoparticles made from Bacillus cereus was confirmed by atomic force microscopy (AFM).…”