ibrahim_mohamed

Dr. Ibrahim Mohamed Abdelhalim Mohamed

Lecturer - Lecturer at Chemistry Department, Faculty of Science

Faculty of science

Address: 25 Sohag University

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2017 | Keywords Nanofibers,
ZrO2 nanofibers/activated carbon composite as a novel and effective electrode material for the enhancement of capacitive deionization performance
Among the various forms of carbon materials, activated carbon still possesses the maximum attention as an optimum commercially available, cheap, and effective electrode material for the capacitive deionization desalination process. However, the well-known hydrophobicity and low specific capacitance limit its wide application. In this study, incorporation of zirconia nanofibers with activated carbon is reported as an effective and simple strategy ... Read more

2017 | Keywords N-doping,
Physicochemical and photo-electrochemical characterization of novel N-doped nanocomposite ZrO2/TiO2 photoanode towards technology of dye-sensitized solar cells
This work introduces the synthesis of N-doped nanocomposite of ZrO2/TiO2 nanofibers (NFs) by use of both electrospinning and hydrothermal methods. The physicochemical properties of the introduced TiO2 NFs are investigated to describe the morphology, crystallinity and chemistry through FESEM, SEM-EDX, XRD, TEM and XPS. As the results, the investigated material can be described as N@ZrO2/TiO2 NFs. The crystal structure of ... Read more

2017 | Keywords Nanocomposite,
Synthesis of novel ZrO 2 &GO@ TiO 2 nanocomposite as an efficient photoanode in dye-sensitized solar cells
Due to the physicochemical and photo-electro properties, TiO2 nanostructures still being the outstanding photoanode materials in the dye-sensitized solar cells (DSCs). However, it is well known that a low dye-loading and charge recombination constrain the limitation of large-scale application. This work introduces the synthesis of ZrO2&GO@TiO2 nanofibers (NFs) by facile two steps using electrospinning and hydrothermal treatment. Furthermore, the developed ... Read more

2015 | Keywords
Novel Schiff base amino acid as corrosion inhibitors for carbon steel in CO2-saturated 3.5% NaCl solution: experimental and computational study
The corrosion inhibition and adsorption behavior of some novel Schiff bases based on amino acids on carbon steel in CO2-saturated 3.5% NaCl solution at 50°C was investigated using gravimetric, potentiodynamic polarization, linear polarization resistance corrosion rate, and scanning electron microscope (SEM)/energy-dispersive X-ray spectroscopy analysis (EDAX) techniques. Results show that the inhibition efficiency increases when the inhibitor concentration increases. Potentiodynamic polarization ... Read more

2015 | Keywords Schiff base,
Kinetics of acid hydrolysis and reactivity of some antibacterial hydrophilic iron (II) imino-complexes
Kinetic study of acid hydrolysis of some hydrophilic Fe(II) Schiff base amino acid complexes with antibacterial properties was performed using spectrophotometry. The Schiff base ligands were derived from sodium 2-hydroxybenzaldehyde-5-sulfonate and glycine, L-alanine, L-leucine, L-isoleucine, DL-methionine, DL-serine, or L-phenylalanine. The reaction was studied in aqueous media under conditions of pseudo-first order kinetics. Moreover, the acid hydrolysis was studied at different ... Read more

2015 | Keywords Schiff base,
A review on versatile applications of transition metal complexes incorporating Schiff bases
Schiff bases and their complexes are versatile compounds synthesized from the condensation of an amino compound with carbonyl compounds and widely used for industrial purposes and also exhibit a broad range of biological activities including antifungal, antibacterial, antimalarial, antiproliferative, anti-inflammatory, antiviral, and antipyretic properties. Many Schiff base complexes show excellent catalytic activity in various reactions and in the presence of ... Read more

2014 | Keywords iron(II) complex,
Effect of bromide salts on the acid hydrolysis of anti-bacterial hydrophilic Schiff base amino acid iron(II) complexes
Salt effects on the kinetics of acid hydrolysis of some novel hydrophilic iron(II) complexes have been investigated in aqueous medium. The ligands are derived from the condensation of amino acids (glycine, L-alanine, L-leucine, L-isoleucine, DL-methionine, DL-serine or L-phenylalanine) and sodium 2-hydroxybenzaldehyde-5-sulfonate. The reaction was studied under conditions of pseudo first order kinetics. The general rate equation was suggested as follows: ... Read more

2013 | Keywords Acid Hydrolysis,
Hydrophilicity and acid hydrolysis of water-soluble antibacterial iron(II) Schiff base complexes in binary aqueous solvents
Kinetics of acid hydrolysis of seven antibacterial iron(II) Schiff base complexes has been studied. The Schiff base ligands were derived from sodium 2-hydroxybenzaldehyde-5-sulfonate and a series of amino acids. The hydrolysis rate is studied by spectrophotometric method and compared with complex hydrophilicity. Addition of the organic co-solvent, dimethylsulfoxide or _n_-propanol, significantly accelerates the hydrolysis. Read more

2013 | Keywords amino acid,
Synthesis, Characterization and Spectrophotometric Studies of Seven Novel Antibacterial Hydrophilic Iron(II) Schiff Base Amino Acid Complexes
A series of new Iron(II) Schiff base amino acid complexes derived from the condensation of amino acid and sodium 2-hydroxybenzaldehyde-5-sulfonate have been synthesized. The complexes were characterized by elemental, electronic, IR spectral analyses and conductance measurements. The stability and solubility of the prepared complexes were determined. Two spectral methods used to determine the stoichiometry of the prepared complexes which exhibited ... Read more