ahmedabudief

Dr. Ahmed Mohammed Abu-Dief Mohammed

Assistant Professor - Assistant professor of Inorganic and Physical Chemistry

Faculty of science

Address: Behind hospital of Sohag University - Ali Ebn Abi Taleb Street

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Publications Which contain the keyword: TEM


Disposal of Heavy Transition Cd(II) ions from Aqueous Solution utilizing Nano Sized Flamboyant Pod (Delonix regia)
The absorption of toxic heavy metal by natural adsorbents from water were indicated by investigation the effect of nano sized (_Delonix regia _(DR)) and (CADR) citric acid_ Delonix regia_ chemically modified adsorbent for removing the Cd2+ ions. Different techniques were employed for characterizing the adsorbent (_Delonix regia_) such energy dispersive analysis of X-ray (EDAX), Fourier transform infrared spectroscopy (FT-IR), Transmission ... Read more

Nano sized ternary Cu(II) complexes Encompassing Salicylaldehyde Derivatives and Amino Acids as an Effective Strategy for Antimicrobial Activity Improvement and DNA Interaction
A series of ternary Cu(II) complexes encompassing ONO donor Schiff base amino acid ligands were synthesized from condensation of 3–methoxysalicylaldehyde (MS) or 4-diethylamino salicylaldehyde (DS) with α-amino acids (L-phenylalanine (Phe), L-histidine (His), DL-tryptophan (Trp)) as primary ligand and 2, 4-bipridyl (DP) as secondary ligand. All the prepared compounds were characterized by melting points, decomposition temperatures, elemental analysis, UV-Vis, IR spectra, ... Read more

2018-11-17 06:02:37 Keywords Doping, TEM, SEM, XRD, superparamagnetic materials, Ferrites, VSM,
Doping of Nano Zinc  Ferrites by Chromium: Structural and Magnetic Properties Studies
A SERIES OF CHROMIUM-SUBSTITUTED ZINC FERRITES (CRXZN FE2-XO4 WITH = 0.00, 0.10, 0.20, 0.30, 0.40) WERE SYNTHESIZED VIA HYDROTHERMAL METHOD. THE STRUCTURAL CHARACTERIZATIONS OF ALL THE PREPARED SAMPLES WERE DONE USING XRD, FTIR AND EDAX, TEM, HR-TEM AND TGA MEASUREMENTS . THESE STUDIES CONFIRMED THE FORMATION OF SINGLE-PHASE INVERSE SPINEL STRUCTURE IN ALL THE COMPOSITIONS. FROM HR-TEM MEASURMENTS, CRYSTALLINITY ARE ... Read more

A Robust Synthesis of Magnetite Nanoparticles of Desired Size and the Functionalization Thereof
The synthesis of magnetite nanoparticles is an area of permanent interest in view of their high technological applications including Biomedicine and Biosensing. These nanoparticles are used as enhanced magnetic resonance imaging (MRI) agents, for biological separation and magnetic drug delivery systems, and magnetic hyperthermia treatment [1]. Magnetite nanoparticles of about 20 nm in diameter and low polydispersity were prepared heating ... Read more

Doping of Nano Cobalt Ferrites by Cupper: Structural and Magnetic Properties Studies
A series of Cupper-substituted cobalt nano ferrites (CuxCo1-x Fe2O4 with = 0.00, 0.10, 0.20, 0.30 and 0.4) was synthesized via hydrothermal method. The structural characterizations of all the prepared nanoparticles were performed using powder x-ray diffraction, EDAX and FTIR analyses. These studies confirmed the formation of single-phase spinel structure in at lower compositions. The increase in the value of lattice ... Read more

CuFe2O4 nanoparticles: an efficient heterogeneous magnetically separable catalyst for synthesis of some novel propynyl-1H-imidazoles derivatives
The non-toxic magnetic CuFe2O4 nanoparticles have been synthesized, characterized, and used as an efficient catalyst for synthesis of new derivatives for 1,2,4,5-tetrasubstituted imidazoles in excellent yields. The synthesized compounds work-up easy and purification of products are performed without chromatographic methods. The catalyst can be recovered for the subsequent reactions and reused without any appreciable loss. Read more

Removal of Cd(II) ions From Aqueous Solution using Nano sized Moringa Oleifera
This research aims to study the effect of nano sized _Moringa oleifera_ on adsorption of Cd2+ ions from aqueous solution. The investigated biosorbent was characterized by FTIR, SEM, TEM, XRD and EDS techniques. The influence of pH, temperature, adsorbent dosage, contact time, metal ion concentration and chemical treatment of biomass were investigated. The maximum capacity (qm) of Cd2+ ions biosorption ... Read more

Removal of Toxic Pb(II) Ions from Aqueous Solution by Nano Sized Flamboyant Pod (Delonix regia)
The removing of toxic heavy metals from aqueous solution by agricultural biosorbents was investigated by studying the effect of nano sized (Delonix regia) and chemically modified biosorbent citric acid Delonix regia (CADR) for removing of Pb2+ ions. TEM, XRD and EDS, FT-IR, SEM methods were used for characterizing the biosorbent(Delonix regia). The effect of contact time, pH,temperature, dosage of biosorbent, ... Read more

Effect of chromium substitution on the structural and magnetic properties of nanocrystalline zinc ferrite
Single-phase Cr doped zinc ferrites have been synthesized by hydrothermal method. The crystal structure, microstructure, crystallite size and distribution, composition and magnetic properties of the synthesized nanoparticles were determined using X-ray powder diffraction, electron microscopies and vibrating sample magnetometry. Powders are composed of ultrafine spherical nanoparticles with a highly homogeneous elemental composition. The nanoparticles have partially inversed cubic spinel structure ... Read more

2018-10-05 13:23:42 Keywords EDAX, Steel slag, magnetite, akaganéite, nanoparticles, TEM, SEM, XRD,
Steel slag as a raw material for preparing magnetite and akaganéite nanoparticles
More than 400 million tons of iron and steel slag is produced each year in the world. Most of the steel slag is recycled in the developed countries, mainly for use as construction aggregate, however excess steel slag is usually sent to landfills for disposal. Slag dumping can have an impact on the environment due to the release of harmful ... Read more