Maged Al-Fakeh - Academia.edu (original) (raw)

Papers by Maged Al-Fakeh

Journal of Electronic Materials

Ceramics International

This is a PDF file of an article that has undergone enhancements after acceptance, such as the ad... more This is a PDF file of an article that has undergone enhancements after acceptance, such as the addition of a cover page and metadata, and formatting for readability, but it is not yet the definitive version of record. This version will undergo additional copyediting, typesetting and review before it is published in its final form, but we are providing this version to give early visibility of the article. Please note that, during the production process, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.

Department of Chemistry, Faculty of Science, Assiut University, Assiut, Egypt E-mail : ... more Department of Chemistry, Faculty of Science, Assiut University, Assiut, Egypt E-mail : ghandour10@hotmail.com Fax : 0020-88-234270~ Manuscript received 22 April 2010, revised 15 March 2011, accepted 30 March 2011 A series of coordination polymers of the general formula [M(CAR)(ABZ)(H20)].xH20 (M = CuII, CdII and PbII; CAR = BDC (1,4-benzenedicaroxylate) or FDC (1,1'-ferrocenedicarboxylate); ABZ = 2-aminobenzothiazole and x = 0 or 2) has been prepared and characterized. The structure of the complexes has been assigned based on elemental analysis, IR and electronic spectral, thermal analysis, scanning electron microscope and cyclic voltammetric studies. Thermogravimetry (TG), differential thermogravimetry (DTG) and differential thermal analysis (DTA) have been used to study the thermal decomposition...

Open Physics, 2021

The aim of this investigation was to synthesize propolis-mediated silver nanoparticles (Pro-AgNPs... more The aim of this investigation was to synthesize propolis-mediated silver nanoparticles (Pro-AgNPs) and to test their biological activities in comparison with the raw materials (Saudi propolis). The chemical–physical characterization of the product showed that Pro-AgNPs were well synthesized. For the study of biological properties, aqueous and methanolic extracts were prepared from both propolis and Pro-AgNPs. Total polyphenol contents (TPCs) and antiradical activities showed their highest values in methanolic extracts, in particular in propolis extract. But, a higher TPC was found in Pro-AgNP aqueous extract as compared to propolis aqueous extract. It seems that Pro-AgNP synthesis helped extract more phenolic compounds with water. These compounds did not enhance antiradical activity in Pro-AgNP aqueous extract but increased its antibacterial activity.

Materials Science: An Indian Journal, 2014

We report on a nano coordination polymer of Zn(II) derived from 5-(3- pyridyl)-1,3,4-oxadiazole-2... more We report on a nano coordination polymer of Zn(II) derived from 5-(3- pyridyl)-1,3,4-oxadiazole-2-thiol (POZT) and benzimidazole (BIMZ). Itwas prepared, characterized and used as a precursor for zinc oxide nanoparticles (ZnO NPs) by calcination. The coordination polymer was characterized by elemental analysis, IR an UV-visible spectra fluorescence technique, X-ray powder diffraction analysis (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). Thermogravimetry (TG), derivative thermogravimetry (DTG) and differential thermal analysis (DTA) have been used to study the thermal decomposition steps and to calculate the thermodynamic parameters of the nano-sizedmetal coordination polymer. The kinetic parameters have been calculated making use of the Coats- Redfern and Horowitz-Metzger equations. The polymer and zinc oxide possess a nanoparticle size of 20 and 34 nm, respectively. The biological activity of the coordination polymer was tested against five b...

The objective of these studies on synthesis and characterization besides spectroscopic, thermal b... more The objective of these studies on synthesis and characterization besides spectroscopic, thermal behaviour of binary and mixed ligand nanosized metal supramolecular coordination polymers of some 5-(3-pyridyl)-1,3,4-oxadiazole-2-thiol (POZT), 1,3-di-(4-pyridyl)propane (DPP), 1,2-bis(2-pyridyl)ethene (BPE) with imidazole (IMZ), benzimidazole (BIMZ) and 1-methyl-imidazole (MIMZ) which are of considerable interest due to their pharmaceutical, chemical and biological importance. The x-ray powder diffraction, scanning electron microscope SEM and transmission electron microscope TEM of both derivatives of 2,3,4- pyridyl and imidazole metal compounds is also studies. A study of the thermal behaviour of these complexes is important to elucidate the kinetic and mechanistic aspects of their thermolysis as well as their stabilities. It also aims to apply of the prepared coordination polymer in the preparation of Cu-ZSM-5 zeolite catalysts via solid state ion exchange method and testing the activ...

Inorganic Chemistry: An Indian Journal, 2014

A series of coordination polymers of the general formula [M(TPA)(BPY)].xH2O, M=Zn(II), Cd(II) and... more A series of coordination polymers of the general formula [M(TPA)(BPY)].xH2O, M=Zn(II), Cd(II) and Pb(II) and x=1/2, 1 or 3. Terephthalic acid (TPA)=1,4-benzenedicarboxylic acid andBPY=2,2'-bipyridyl has been prepared and characterized. The structure of the complexes has been assigned based on elemental analysis, IR, electronic spectral studies, thermal analysis and Scanning electronmicroscope. Thermogravimetry(TG), derivative thermogravimetry (DTG) and differential thermal analysis (DTA) have been used to study the thermal decomposition of the complexes. The kinetic parameters have been calculated making use of the Coats-Redfern and Horowitz-Metzger equations. The biological screening of the compounds was tested. The bacteria and fungi strains are common contaminants of the environment inEgypt. In this article the studied strains are frequently reported from contaminated soil, water and food.

Nanomaterials, 2021

Due to their unique physicochemical characteristics, palladium nanoparticles (Pd-NPs) have shown ... more Due to their unique physicochemical characteristics, palladium nanoparticles (Pd-NPs) have shown tremendous promise in biological applications. The biosynthesis of Pd-NPs employing Saudi propolis has been designed to be environmental, fast, controlled, and cost-effective. The formation and stability of biosynthesized Pd-NPs by Saudi propolis extract were proved by ultraviolet–visible spectrophotometry (UV-Vis), Fourier-transform infrared spectroscopy (FT-IR), and Zeta potential analysis. Transmission electron microscopy (TEM), scanning electron microscopy (SEM), and X-ray diffraction (XRD) findings show that the average particle size of Pd-NPs is between 3.14 and 4.62 nm, which is in quantum scale. The Saudi propolis enhanced the antimicrobial activity against B. subtilis, S. aureus, E. coli, K. pneumoniae, and C. albicans. Pd-NPs show effective anticancer activity against ductal carcinoma (MCF-7) with IC50 of 104.79 µg/mL.

Radiation Physics and Chemistry, 2021

Abstract Composition of 5Li2O-(40-x) Na2O-xZnO-55P2O5 doped with 2 wt% (CdO + Te) where (x = 0, 7... more Abstract Composition of 5Li2O-(40-x) Na2O-xZnO-55P2O5 doped with 2 wt% (CdO + Te) where (x = 0, 7, 14, 21, 28, 35 and 40) mol% glass system have been prepared and simulated for their gamma-ray shielding properties. The studied glasses were labeled as LNZP0–LNZP6 according to the values of Na2O and ZnO. Mass attenuation coefficient (MAC), Linear attenuation coefficient (LAC), half-value layer (HVL) and mean free path (MFP) have been calculated by the Phy-X/PSD software program in the photon energy range from 0.015 to 15 MeV. The results show that the highest values of MAC were 30.64, 31.98, 33.34, 34.62, 35.89, 36.82 and 38.09 cm2/g at the energy 0.015 MeV for LNZP0-LNZP6 glass samples, respectively. Also, atomic cross section (ACS), electron cross section (ECS), effective atomic number (Zeff) and electron density (Neff) have been estimated. The results showed that the LNZP6 glass sample has the best gamma-ray protection properties among other examined glasses. The ACS and ECS parameters were found to have the maximum value at 0.015 MeV and decreased with increasing energy of photons for all samples. The Maximum values of Zeff were at the energy 0.04 MeV equal to 48.92, 48.72, 48.56, 48.37,48.19, 48.02 and 47.85 for LNZP0-LNZP6, respectively.

RSC Advances, 2020

In this work, a new porphyrin, 5,10,15,20-tetrakis{4-[((4-methoxyphenyl)acetyl)oxy]phenyl}porphyr... more In this work, a new porphyrin, 5,10,15,20-tetrakis{4-[((4-methoxyphenyl)acetyl)oxy]phenyl}porphyrin (H2TMAPP) (1), and its cobalt complex [CoII(TMAPP)] (2) were synthesized in good and quantitative yields, respectively.

Asian Journal of Chemistry, 2020

Two of coordination polymers of the general formula [Fe(BDC)(AMTZ)Cl]·2H2O and [Fe(BDC)(MBT)Cl]·H... more Two of coordination polymers of the general formula [Fe(BDC)(AMTZ)Cl]·2H2O and [Fe(BDC)(MBT)Cl]·H2O, BDC = 1,4-benzenedicarboxylic acid, AMTZ = 2-amino-4-methyl-thiazole and MBT = 2-mercaptobenzothiazole, have been synthesized and characterized. Structure of both coordination polymers has been evaluated on the basis of elemental analysis, thermal, FT-IR, UV-vis spectra and the charges been carried by the atoms, caused a dipole moment of 2.4346 debye and total energy -382 × 103 Kcal mol-1. Biological activity of the two synthesized complexes was tested against some fungal and bacterial strains

Oriental Journal Of Chemistry, 2013

Currently, the construction of metalorganic coordination architectures has witnessed tremendous g... more Currently, the construction of metalorganic coordination architectures has witnessed tremendous growth because of their intriguing structures, gas storage and potential properties 1-4. Among heterocyclic thioamides bearing the-N(H)-C(=S)-or-N=C(-SH)-group, 5 an oxadiazole functional derivative 5-(3-pyridyl)-1,3,4-oxadiazole-2-thiol has been introduced in the design of new porous coordination polymers very recently 6. At the same time, it has been found that the geometry of

Journal of Environmental & Analytical Toxicology, 2012

A new series of coordination polymers of Co(II), Ni(II), Cu(ІІ), Cd(II) and UO2(ІІ), 5-(3-pyridyl... more A new series of coordination polymers of Co(II), Ni(II), Cu(ІІ), Cd(II) and UO2(ІІ), 5-(3-pyridyl)-1,3,4-oxadiazole-2-thiol (POZT) and benzimidazole (BIMZ) has been prepared and characterized. The compounds have been characterized based on elemental analysis, FT-IR and electronic spectral studies, thermal analysis and X-ray powder diffraction. Thermogravimetry (TG), derivative thermogravimetry (DTG) and differential thermal analysis (DTA) have been used to study the thermal decomposition steps and to calculate the thermodynamic parameters of the nanosized metal coordination polymers. The kinetic parameters have been calculated making use of the Coats-Redfern and Horowitz-Metzger equations. The scanning electron microscope SEM photographs and particle size calculations from the powder XRD data indicate the nano-sized nature of the prepared supramolecular coordination polymers (average size 17-28 nm). The antimicrobial activity of the synthesized compounds was tested against six fungal and five bacterial strains. The majority of compounds were effective against the tested microbs. The bacteria and fungi strains are common contaminants of the environment in Egypt. In this article the studied strains are frequently reported from contaminated soil, water and food.