Background: Iron oxide nanocomposites have received a great attention for their application in va... more Background: Iron oxide nanocomposites have received a great attention for their application in various fields like physics, medicine, biology, and material science etc., due to their unique properties, such as magnetism, electrical properties, small size, biocompatibility and low toxicity. Methods: Fe 3 O 4 /Ag 3 PO 4 @WO 3 nanocomposites with different weight percent of Ag 3 PO 4 were successfully prepared through fabricated Ag 3 PO 4 /Fe 3 O 4 with WO 3 via in situ fabrication method, electrospinning involved precursor solution preparation and spinning to enhance photocatalyst performance under simulated sunlight for the degradation of methylene blue (MB) and antibacterial activity against Staphylococcus aureus (S. aureus). Results: The photocatalytic degradation of methylene blue (MB) under simulated light irradiation indicated that the nanocomposite with 0.25 mg of Ag 3 PO 4 has the best activity. An additional advantage of these photocatalysts is magnetic recoverability, using external magnetic field and photocatalytic stability of the nanocomposites was evaluated for three cycles. In addition, using different scavengers, holes (h +) and superoxide radical (O 2 •−) radicals and hydroxide radical (• OH) were identified the main oxidative species in the degradation reaction of methylene blue. Conclusions: The results reveal that Fe 3 O 4 /Ag 3 PO 4 @WO 3-0.25 nanocomposites have photocatalytic and antibacterial activity against S. aureus. The photocatalyst and mechanism based on the enhancement of electron transfer processes between Ag 3 PO 4 and WO 3 nanoparticles.
In situ fabrication of graphene-based Ag3PO4@AgBr composite with enhanced photocatalytic activity... more In situ fabrication of graphene-based Ag3PO4@AgBr composite with enhanced photocatalytic activity under simulated sunlight, Journal of Environmental Chemical Engineering http://dx.
Antibacterial activity of iron oxide nanoparticles, an employing B. aegyptiaca oil (L.) Del., was... more Antibacterial activity of iron oxide nanoparticles, an employing B. aegyptiaca oil (L.) Del., was used as natural stabilizer by modifying a co-precipitation method. In this work, we chose B. aegyptiaca oil as the new surfactant coating agent, and synthesized B. aegyptiaca oil coating with iron oxide na-noparticles which were characterized with a variety of methods, including Gas Chromatography (GC) to determine the fatty acids composition of the seeds oil, Fourier Transform-Infrared Spec-troscopy (FTIR), Transmission Electron Microscopy (TEM) equipped with Energy Dispersive Spec-troscopy (EDS), X-ray Powder Diffractometer (XRD) and Vibrating Sample Magnetometer (VSM). In antibacterial studies, disk diffusion susceptibility test was used to measure efficacy of iron oxide nanoparticles against Gram-positive bacteria Staphylococcus aureus (S. aureus), Bacillus subtilis (B. subtilis) and Gram-negative bacteria Escherichia coli (E. coli) in terms of zone inhibition. The B. ae-gyptiaca coated on the surface of iron oxide nanoparticles; its particle size was found to be nanos-cale below 50 nm, and the magnetization (ᵟs) was 16.975 emu g −1. Antibacterial activity was measured. Efficacy of iron oxide nanoparticles against bacterial strains was found in Escherichia coli (E. coli). All these findings suggest that the nanoparticles synthesized from B. aegyptiaca oil may be a promising reagent for a wide variety of applications in biological fields as well as in nanomedicine.
Background: Iron oxide nanocomposites have received a great attention for their application in va... more Background: Iron oxide nanocomposites have received a great attention for their application in various fields like physics, medicine, biology, and material science etc., due to their unique properties, such as magnetism, electrical properties, small size, biocompatibility and low toxicity. Methods: Fe 3 O 4 /Ag 3 PO 4 @WO 3 nanocomposites with different weight percent of Ag 3 PO 4 were successfully prepared through fabricated Ag 3 PO 4 /Fe 3 O 4 with WO 3 via in situ fabrication method, electrospinning involved precursor solution preparation and spinning to enhance photocatalyst performance under simulated sunlight for the degradation of methylene blue (MB) and antibacterial activity against Staphylococcus aureus (S. aureus). Results: The photocatalytic degradation of methylene blue (MB) under simulated light irradiation indicated that the nanocomposite with 0.25 mg of Ag 3 PO 4 has the best activity. An additional advantage of these photocatalysts is magnetic recoverability, using external magnetic field and photocatalytic stability of the nanocomposites was evaluated for three cycles. In addition, using different scavengers, holes (h +) and superoxide radical (O 2 •−) radicals and hydroxide radical (• OH) were identified the main oxidative species in the degradation reaction of methylene blue. Conclusions: The results reveal that Fe 3 O 4 /Ag 3 PO 4 @WO 3-0.25 nanocomposites have photocatalytic and antibacterial activity against S. aureus. The photocatalyst and mechanism based on the enhancement of electron transfer processes between Ag 3 PO 4 and WO 3 nanoparticles.
In situ fabrication of graphene-based Ag3PO4@AgBr composite with enhanced photocatalytic activity... more In situ fabrication of graphene-based Ag3PO4@AgBr composite with enhanced photocatalytic activity under simulated sunlight, Journal of Environmental Chemical Engineering http://dx.
Antibacterial activity of iron oxide nanoparticles, an employing B. aegyptiaca oil (L.) Del., was... more Antibacterial activity of iron oxide nanoparticles, an employing B. aegyptiaca oil (L.) Del., was used as natural stabilizer by modifying a co-precipitation method. In this work, we chose B. aegyptiaca oil as the new surfactant coating agent, and synthesized B. aegyptiaca oil coating with iron oxide na-noparticles which were characterized with a variety of methods, including Gas Chromatography (GC) to determine the fatty acids composition of the seeds oil, Fourier Transform-Infrared Spec-troscopy (FTIR), Transmission Electron Microscopy (TEM) equipped with Energy Dispersive Spec-troscopy (EDS), X-ray Powder Diffractometer (XRD) and Vibrating Sample Magnetometer (VSM). In antibacterial studies, disk diffusion susceptibility test was used to measure efficacy of iron oxide nanoparticles against Gram-positive bacteria Staphylococcus aureus (S. aureus), Bacillus subtilis (B. subtilis) and Gram-negative bacteria Escherichia coli (E. coli) in terms of zone inhibition. The B. ae-gyptiaca coated on the surface of iron oxide nanoparticles; its particle size was found to be nanos-cale below 50 nm, and the magnetization (ᵟs) was 16.975 emu g −1. Antibacterial activity was measured. Efficacy of iron oxide nanoparticles against bacterial strains was found in Escherichia coli (E. coli). All these findings suggest that the nanoparticles synthesized from B. aegyptiaca oil may be a promising reagent for a wide variety of applications in biological fields as well as in nanomedicine.
Uploads