Journal ArticleDOI
Microstructural, morphological behavior and removal of Cr(VI) and Se(IV) from aqueous solutions by magnetite nanoparticles/PVA and cellulose acetate nanofibers
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In this article, different contents of magnetite nanoparticles (MNPs)/graphene (G) nanosheets were incorporated into polyvinyl alcohol (PVA) and cellulose acetate (CA) electrospun nanofibers.Abstract:
Different contents of magnetite nanoparticles (MNPs)/graphene (G) nanosheets were incorporated into polyvinyl alcohol (PVA) and cellulose acetate (CA) electrospun nanofibers. The obtained compositions were investigated using XRD, TEM, FTIR and FESEM. The microstructural investigation displayed that nanofibers were formed with diameters around 120 nm up to 900 nm in the case of the composition at 0.1MNPs-G/PVA, while morphological features illustrated that the composition at 0.0MNPs-G/PVA fibers was formed with diameters 0.2 µm up to 0.6 µm, besides G, which was scattered through the fibers with dimensions around 17 µm. The removal efficiency of Se(IV) and Cr(VI) from aqueous solutions was evaluated and the optimum trend was obtained for the composition of 0.05MNPs-G@PVA. The high porous nanofibers may be suggested for more investigations for heavy metal removal.read more
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Silver and copper oxide nanoparticles-decorated graphene oxide via pulsed laser ablation technique: Preparation, characterization, and photoactivated antibacterial activity
A.A. Menazea,M.K. Ahmed +1 more
TL;DR: Graphene oxide, silver and copper oxide nanoparticles display photo-activated antibacterial behavior owing to their ability to generate charge carriers via light exposure as mentioned in this paper, which suggests that GO could be a great platform for different kinds of photo activated antibacterial to be recommended for versatile biomedical applications.
Journal ArticleDOI
Synthesis and antibacterial activity of graphene oxide decorated by silver and copper oxide nanoparticles
A.A. Menazea,M.K. Ahmed +1 more
TL;DR: In this paper, a decoration of graphene oxide by silver and copper oxide nanoparticles via a chemical method in order to enhance the antibacterial activity was presented. But the results revealed that the synthesized GO, GO/AgNPs and GO/CuONPs had enormous potential for application in a wide variety of biomedical utilizes.
Journal ArticleDOI
Polyvinyl Alcohol/Silver nanoparticles film prepared via pulsed laser ablation: An eco-friendly nano-catalyst for 4-nitrophenol degradation
Ayman M. Mostafa,A.A. Menazea +1 more
TL;DR: In this paper, an eco-friendly nano-catalyst PVA/AgNPs portable film for 4-nitrophenol degradation was introduced, which was synthesized via onepotential pulsed laser ablation in liquids (PLAL) technique.
Journal ArticleDOI
Blend biopolymeric nanofibrous scaffolds of cellulose acetate/ε-polycaprolactone containing metallic nanoparticles prepared by laser ablation for wound disinfection applications.
TL;DR: The ratio of viable cells displays that compositions are biocompatible, while the antibacterial activity of both AgNPs and CuONPs showed an inhibition zone around 11.2.
Journal ArticleDOI
Wound healing activity of Chitosan/Polyvinyl Alcohol embedded by gold nanoparticles prepared by nanosecond laser ablation
A.A. Menazea,M.K. Ahmed +1 more
TL;DR: In this article, gold nanoparticles (AuNPs) synthesized via laser ablation technique were incorporated into polymeric blend of Chitosan (CS)/Polyvinyl Alcohol (PVA) in different contents via controlling the time of ablation.
References
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Adsorption of Cd(II) and Pb(II) from aqueous solutions on activated alumina
TL;DR: The ability of activated alumina as synthetic adsorbent was investigated for adsorptive removal of Cd (II) and Pb(II) ions from aqueous solutions and showed the suitability ofactivated alumina in waste water treatment plant operation.
Journal ArticleDOI
Crystal structure and magnetic properties of the BaFe12−xInxO19 (x=0.1–1.2) solid solutions
An.V. Trukhanov,V. O. Turchenko,Ivan A. Bobrikov,Sergei V. Trukhanov,I. S. Kazakevich,Anatoly M. Balagurov +5 more
TL;DR: In this paper, the Curie temperature and change of total magnetic moment per formula unit have been defined for all the compositions of the barium hexaferrites BaFe 12− x In x O 19 ( x = 0.1−1.2) solid solutions.
Journal ArticleDOI
Correlation Between Composition and Electrodynamics Properties in Nanocomposites Based on Hard/Soft Ferrimagnetics with Strong Exchange Coupling
Munirah Abdullah Almessiere,Alex Trukhanov,Yassine Slimani,Kok Yeow You,Sergei V. Trukhanov,E.L. Trukhanova,Fahmiruddin Bin Esa,A. Sadaqat,Kashif Chaudhary,Maxim V. Zdorovets,Abdulhadi Baykal +10 more
TL;DR: Frequency dependencies of the microwave characteristics (MW) were investigated using a co-axial method and the non-linear behavior of the MW with the composition transformation may be due to different degrees of Fe ion oxidation on the spinel/hexaferrite grain boundaries and strong exchange coupling during the hard and soft phases.
Journal ArticleDOI
Porous Fe2O3 microcubes derived from metal organic frameworks for efficient elimination of organic pollutants and heavy metal ions
Xing Li,Yang Liu,Chenlu Zhang,Tao Wen,Li Zhuang,Xiangxue Wang,Xiangxue Wang,Gang Song,Diyun Chen,Yuejie Ai,Tasawar Hayat,Xiangke Wang,Xiangke Wang +12 more
TL;DR: In this paper, porous Fe2O3 microcubes composed of fine Fe 2O3 nanoparticles (NPs) were facilely synthesized through the simultaneous oxidative decomposition of Prussian blue (PB), and the results indicated that the enrichment of Pb(II) was mainly attributed to the chemical binding between the electron donating oxygen ions of P-Fe2O 3 surface and Pb (II), while the large available positive charge density could facilitate the effective adsorption of Cr(VI) due to ion exchange and electrostatic attraction.
Journal ArticleDOI
Aminated-Fe3O4 nanoparticles filled chitosan/PVA/PES dual layers nanofibrous membrane for the removal of Cr(VI) and Pb(II) ions from aqueous solutions in adsorption and membrane processes
Shahnaz Koushkbaghi,Amirabbas Zakialamdari,Mohammad Pishnamazi,Hossein Fasih Ramandi,Majid Aliabadi,Mohammad Irani +5 more
TL;DR: In this article, dual layers mixed matrix membranes (MMMs) were prepared by incorporating aminated-Fe3O4 nanoparticles into the chitosan/polyvinyl alcohol nanofibers over the polyethersulfone (PES) membrane for the removal of Cr(VI) and Pb(II) ions in batch adsorption and membrane processes.