MYCOSYNTHESIS OF HEMATITE (Α-FE2O3) NANOPARTICLES USING FUNGI AND THEIR PHYSICO-CHEMICAL PARAMETERS AND PHOTOCATALYTIC ACTIVITIES.

Sultan, Mahmoud H.; Kaabo, Hazem Elsayed; Hassan, Saad El‑Din; Mahdy, Hesham M.; Saied, Ebrahim

doi:10.21608/ajps.2024.429942

MYCOSYNTHESIS OF HEMATITE (Α-FE2O3) NANOPARTICLES USING FUNGI AND THEIR PHYSICO-CHEMICAL PARAMETERS AND PHOTOCATALYTIC ACTIVITIES.

Document Type : Original Article

Authors

Department of Botany and Microbiology, Faculty of Science, Al-Azhar University, Nasr City, Cairo, Egypt

10.21608/ajps.2024.429942

Abstract

Green approach for the synthesis of nanoparticles has been reported as the effective technique due to its ecofriendly, safe and applicable at large scale. The present study reports the green approach for hematite nanoparticle synthesis using Aspergillus sydowii using FeSO₄·7H₂O as a precursor. The biosynthesis of hematite is usually accompanied with changing in the color from colorless to yellow color and monitor using UV Vis-spectrophotometer.
The utilization of Aspergillus sydowii biomass filtrate for the biogenesis of hematite nanoparticles is the goal of the current work. The structural and optical properties of the fungal produced nanoparticles were investigated utilizing transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FTIR), x ray diffraction (XRD) and dynamic light scattering (DLS). All of the investigated parameters and their interactions were found to have a significant effect on the crystallite size, according to the results. The average diameter size of the biosynthesized Fe₂O₃-NPs was ranged between 20 -56 nm. The size of the biosynthesized Fe₂O₃-NPs was 28.7 nm, and their crystalline nature was confirmed by XRD, according to characterization results. A surface plasmon resonance spectrum of ferrous nanoparticles were obtained at 370 nm. Under UV light, Ribazol black b, safranin and crystal violet dyes were photo catalytically degraded utilizing biosynthesized Fe₂O₃ nanoparticles (NPs). The highest decolorization percentage of Ribazol black b, safranin and Crystal violet was 92.1% ± 1.2%, 70.1±0.88% and 94.3% ± 0.93%, respectively after 90 and 180 min, for Ribazol black b, safranin and crystal violet of incubation at 50.0 mg/mL^─1 of Fe₂O₃-NPs. Furthermore, Fe₂O₃-NPs were successfully used more than once for biodegradation and that was regarded as its efficacy. hematite nanoparticles were used to remove Cb, Co, Pb, Zn and Cd, with percentages of 99.7 ± 1.2%, 99.1% ± 1.3%, 97.1% ± 1.3%, and 93.8% ± 1.4%, respectively. Finally the biosynthesized hematite nanoparticles were used for heavy metal bioremediation, and photocatalytic activity.

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