A5101628403- Synthesis and biological activity
- Synthesis and Characterization of Heterocyclic Compounds
- Carbohydrate Chemistry and Synthesis
- Click Chemistry and Applications
- Synthesis and Biological Evaluation
- HIV/AIDS drug development and treatment
- Extraction and Separation Processes
- Adsorption and biosorption for pollutant removal
- Quinazolinone synthesis and applications
- Biochemical and Molecular Research
- Chemical Synthesis and Analysis
- Synthesis of Organic Compounds
- Radioactive element chemistry and processing
- Glycosylation and Glycoproteins Research
- Surfactants and Colloidal Systems
- Synthesis of heterocyclic compounds
- Nanomaterials for catalytic reactions
- Chemical Synthesis and Characterization
- Hepatitis B Virus Studies
- DNA and Nucleic Acid Chemistry
- Cancer therapeutics and mechanisms
- Petroleum Processing and Analysis
- Hepatitis C virus research
- Multicomponent Synthesis of Heterocycles
- Bacteriophages and microbial interactions
Menoufia University
2014-2025
EIA University
2022-2024
Ministry of Defence
2019
Shebin Teaching Hospital
2009-2019
Division of Chemistry
2019
Agricultural Research Center
2014
National Research Centre
2010-2013
Northern Border University
2012
National Water Research Center
2011
University of Konstanz
2001-2008
Abstract The effectiveness of modified guar gum ( Cyamopsis tetragonoloba ) as a Cd(II) and Cu(II) adsorbent in aquatic media was investigated. Synthesis based on copolymerization with 2‐Acrylamido‐2‐methyl‐1‐propane sulfonic acid acrylamide presence methylene bis‐acrylamide cross linker the form hydrogel adsorbent. Various analytical techniques were employed to describe surface morphology Adsorption tests carried out under different conditions dose (10–50 mg), initial concentration (25–150...
Efficient removal of Cd(II) and Pb(II) from contaminated water is considered a fundamental point view. Synthetic hydrogel biopolymers based on chitosan alginate (cost-effective eco-friendly) were successfully designed characterized by highly efficient contaminants. The sorbents are FTIR, SEM-EDX, TGA, XPS analyses textural properties which qualified N2 adsorption. sorption firstly investigated the effect pH, isotherms, uptake kinetics, selectivity multi-metal solution with equi-molar...
In this work, microalgae-based zinc oxide nanoparticles loaded with electrospun polyvinyl alcohol (PVA)/sodium alginate (SA) nanofibers were fabricated by electro-spinner. PVA/SA fibrous mats crosslinked citric acid, which enhanced their thermal stability and swelling behavior. Green-synthesized ZnO NPs laboratory synthesized characterized FTIR, XRD, EDX, SEM, TEM TGA analyses. Electrospinning of optimized mixing ratios was further carried out different (0.25, 0.50 0.75%, wt./v) to fabricate...
Abstract Newly modified magnetic chitosan nanoparticles were synthesized for the high-efficiency removal of cadmium ions from aquatic environments. The structure and morphology composites confirmed using FTIR, TGA, XRD, BET, SEM, TEM, SAED pattern analysis, zeta potential. Under optimal conditions (pH = 6.0, contact time 120 min, sorbent dosage 0.005 g/100 mL), maximum Cd (II) by samples MC, SA, SB was 90.8%, 95%, 95.15%, respectively. kinetic data at pH 6 could be accurately described a...
In this study, the adsorption behavior of copper(II) ions from aqueous solutions onto sesame husk (SH) was investigated. The effect different parameters such as pH, contact time, adsorbent dosage, adsorbate concentration, temperature and agitation speed studied. Thermodynamic parameters, equilibrium isotherms kinetic data have been evaluated. functional groups surface morphology SH were characterized by FTIR SEM. Adsorption expressed Langmuir, Freundlich Dubinin-Radushkevich (D-R) models it...
A new magnetic functionalized derivative of chitosan is synthesized and characterized for the sorption metal ions (environmental applications valorization). The chemical modification glycine consists of: activation support with epichlorohydrin, followed by reaction either to produce reference material (i.e., Gly sorbent) or ester hydrochloride, hydrazinolysis synthesize hydrazide sorbent HGly sorbent). materials are titration, elemental analysis, FTIR analysis (Fourrier-transform infrared...
Abstract Novel pyridine‐derived compounds ( 5–19 ) were designed and synthesized, their anticancer activities evaluated against HepG2 MCF‐7 cells, targeting the VEGFR‐2 enzyme. Compounds 10 , 9 8 15 found to be most potent derivatives two cancer cell lines, MCF‐7, respectively, with IC 50 = 4.25 6.08 µM, 4.68 11.06 4.34 10.29 6.37 12.83 µM. Compound displayed higher activity cells than sorafenib (IC 9.18 5.47 respectively) doxorubicin 7.94 8.07 respectively). It also showed but lower...
With the target of recovering rare earth elements (REEs) from acidic leachates, a new functionalized hydrogel was designed, based on phosphorylation algal/polyethyleneimine beads. The functionalization strongly increased sorption efficiency raw material for Pr(III) and Tm(III). Diverse techniques were used characterizing this correlating performances mechanisms to physicochemical structure sorbent. First, work characterized properties synthetic solutions with usual procedures (study pH...
This study aims to evaluate the functionalization of chitosan biopolymer with heterocyclic moieties 2-thioxodihydropyrimidine-4,6(1H,5H)-dione used for enhancing sorption Cr ions from aqueous solution. A synthesized sorbent is a nanoscale particle (around 5–7 nm), which explains fast kinetics sorption. The specified using elemental analysis (EA), FTIR, BET (nitrogen desorption isotherms), TGA, and SEM-EDX analyses. Sorption properties are investigated ultraviolet emission (UV) but also...
The synthesis and developments of magnetic chitosan nanoparticles for high efficiency removal the cadmium ions from aquatic medium are one most challenging techniques. Highly adsorptive composite (MCH-ATA) was produced by reaction with formaldehyde amino thiazole derivative. sorbent characterized FTIR, elemental analyses (EA), SEM-EDX, TEM analysis, TGA titration (volumetric). modified material includes nitrogen sulfur contents (i.e., 4.64 1.35 mmol g−1, respectively), compared to pristine...
An electron-withdrawing protecting group at the O-2 atom and a good anomeric leaving mannopyranosyl donor are required for new, practical approach to production of β-linked mannopyranoside units (see scheme, MPM=para-methoxybenzyl, TDS=thexylmethysilyl, TMS=trimethylsilyl, All=β-D-allose, OTf=trifluoromethanesulfonate). Many attempts solve this problem in direct manner have failed. β-Mannopyranoside found, instance, N-glycopeptides.
Abstract BACKGROUND The recovery of metal ions from aqueous solutions for environmental preservation or resource saving requires the development new sorbents with enhanced separation properties. A process has been designed functionalization magnetic chitosan microparticles grafting either amidoxime (AO‐AHC) hydrazinyl amine (HZ‐AHC). Their sorption properties have tested uranium(VI) and zirconium(IV) solutions. RESULTS wide range analytical tools is used characterizing not only chemical...
New pyridine, pyrazoloyridine, and furopyridine derivatives substituted with naphthyl thienyl moieties were designed synthesized starting from 6-(naphthalen-2-yl)-2-oxo-4-(thiophen-2-yl)-1,2-dihydropyridine-3-carbonitrile (1). The chloro, methoxy, cholroacetoxy, imidazolyl, azide, arylamino prepared to obtain the pyridine-−C2 functionalized derivatives. derived pyrazolpyridine-N-glycosides via heterocyclization of C2-thioxopyridine derivative followed by glycosylation using glucose...