Abstract A new heterocyclic thiazolylazo dye ligand, 2- [¯2-(4, 5- dimethyl thiazolyl) azo ] -4-E... more Abstract A new heterocyclic thiazolylazo dye ligand, 2- [¯2-(4, 5- dimethyl thiazolyl) azo ] -4-Ethoxy Phenol (DMeTAEP), (LH) was synthesized by the diazotization of 4.5-dimethyl thiazolylazonium chloride and coupling with 4- Ethoxy phenol in alkaline alcoholic solution under suitable optimized experimental conditions to yield a new azo dye ligand. The structure of ligand and its complexes was prepared from Co(III), Ni(II), Cu(II), Zn(II), Cd(II), Hg(II), Ag (I) and Au(III) ions. They confirmed by XRD, SEM, (TG-DTG) thermal analysis, 1 H-NMR,UV–visb, mass and FT-IR spectroscopic methods, elemental analysis, atomic absorption, magnetic susceptibility and molar conductance. The mole ratio [M: L], it was also studied which was 1:1 for Ag (I) and Au (III) complexes and 1:2 The rest of the metal complexes. The isolated solid complexes are found to have the general formula [M (L) 2 ] Cl n .mH 2 O, where n = 1, m = 0 when M = Co (III) and n = 0, m = 1 when M = Ni (II), and Hg(II) while n = 0 and m = 0 when M = Cu (II), Zn (II), Cd (II) and ]ML (H 2 O)] of Ag(I) – complex but Au(III)-complex structural formula was [Au(L)Cl] Cl conductivity measurements for prepared complexes showed 1:1 electrolyte for Co(III(and Au(III) complexes and non – electrolyte the rest of complexes. The spectral and analytical data revealed that this ligand behaves as a tridentate chelating agent and coordination number of all metal ions were found to be six except for Ag (I) and Au (III) which was four. The activities of complexes were examined as sensitizers in the photocatalytic reaction of p -nitro aniline (PNA) which is used as a model of water pollutants.
Tin oxide thin films were deposited on glass substrate at (400 ºC) by using chemical spray pyroly... more Tin oxide thin films were deposited on glass substrate at (400 ºC) by using chemical spray pyrolysis technique and its composed with cobalt oxide in different ratio. The structural, morphologic and optical properties of thin films are investigated by: (XRD) X-Ray Diffraction, (AFM) Atomic Force Microscopy, (UV-Vis )Ultraviolet – Visible Spectroscopy. XRD patterns indicate that the structure of tin oxide thin film is tetragonal. All prepared films were nano materials as stated by Scherrer equation. It might have been found by AFM analysis, those surface roughness increase with increasing of cobalt ratio. By provision about Tauc plots, optical band gaps for thin
The present study enclosed the employment of low cost industrial waste rice husk for the removal ... more The present study enclosed the employment of low cost industrial waste rice husk for the removal of Eriochrome Black T by adsorption technique. The impact of some parameters was studied like agitation time, biosorbent dose and temperature. The bioadsorption information were analyzed by langmuir and Freundlich isotherm models at equilibrium. The adsorption capacities (Qm) obtained from the Langmuir isotherm plots were 40.00, 39.68, 38.91 and 38.00 mg/g respectively at pH adequate to of 7.0 at 30, 40, 50and 60 C°. The study of the temperature diversity incontestible that the EBT adsorption is endothermicand spontaneous with distended irregularity at the solid-solution interface. thermodynamic quantities as change in (ΔH°), change in entropy (ΔS°) and change in free energy (ΔG°) were additionallyinvestigated. Free energy change showed that bioadsorption of Eriochrome Black T was spontaneous in any respect studied temperatures (30–60 C°).It was implicit that rice husk could also be appr...
The research described about the photocatalytic efficiency of zinc oxide on the photolysis of Ali... more The research described about the photocatalytic efficiency of zinc oxide on the photolysis of Alizarin Yellow R. Alizarin Yellow R was used as a model of azo dyes which regarded as a main water pollutants. Some variables influencing the process where studied such as: calcination temperature of catalyst, concentration of the dye, weight of catalyst, time of irradiation and doping by transition metal ions. The best degradation percentage obtained was 92.541 % by using zinc oxide prepared at calcination temperature 773 K, weight 0.3 g, dye concentration 40 ppm and through 2 h irradiation time of dye solution in the presence of medium pressure mercury lamp 400 watt. The percentage obtained was 90.850 % by using ZnO-Co, The kinetic studies showed that the reaction from pseudo first order.
A new heterocyclic thiazolylazo dye ligand, 2-[2-(4, 5-dimethyl thiazolyl) azo ]-4-Ethoxy Phenol ... more A new heterocyclic thiazolylazo dye ligand, 2-[2-(4, 5-dimethyl thiazolyl) azo ]-4-Ethoxy Phenol (DMeTAEP), (LH) was synthesized by the diazotization of 4.5-dimethyl thiazolylazonium chloride and coupling with 4-Ethoxy phenol in alkaline alcoholic solution under suitable optimized experimental conditions to yield a new azo dye ligand. The structure of ligand and its complexes was prepared from Co(III), Ni(II), Cu(II), Zn(II), Cd(II), Hg(II), Ag (I) and Au(III) ions. They confirmed by XRD, SEM, (TG-DTG) thermal analysis, 1 H-NMR,UVevisb, mass and FT-IR spectroscopic methods, elemental analysis, atomic absorption, magnetic susceptibility and molar conductance. The mole ratio [M: L], it was also studied which was 1:1 for Ag (I) and Au (III) complexes and 1:2 The rest of the metal complexes. The isolated solid complexes are found to have the general formula [M (L) 2 ] Cl n .mH 2 O, where n ¼ 1, m ¼ 0 when M ¼ Co (III) and n ¼ 0, m ¼ 1 when M ¼ Ni (II), and Hg(II) while n ¼ 0 and m ¼ 0 when M ¼ Cu (II), Zn (II), Cd (II) and ]ML (H 2 O)] of Ag(I) e complex but Au(III)-complex structural formula was [Au(L)Cl] Cl conductivity measurements for prepared complexes showed 1:1 electrolyte for Co(III(and Au(III) complexes and non e electrolyte the rest of complexes. The spectral and analytical data revealed that this ligand behaves as a tridentate chelating agent and coordination number of all metal ions were found to be six except for Ag (I) and Au (III) which was four. The activities of complexes were examined as sensitizers in the photocatalytic reaction of p-nitro aniline (PNA) which is used as a model of water pollutants.
A series of new cholesterol derivatives have been prepared via Mitsunobu reaction. The reaction w... more A series of new cholesterol derivatives have been prepared via Mitsunobu reaction. The reaction was monitored by thin‐layer chromatography (TLC) technique. All new compounds were characterized by melting points, elemental analysis, FT‐IR, 1 H, 13 C and 2D‐NMR spectroscopy. The antibacterial and antifungal activity of these derivatives was also determined. The phase transitions of the prepared derivatives were measured with the aid of differential scanning calorimetry. The textures of the mesophases have been determined with a hot stage equipped polarizing microscope, also the electrical conductivity of the solutions of these liquid crystals measured by electrical conductivity meter. The analysis showed that these prepared derivatives were liquid crystals.
Abstract A new heterocyclic thiazolylazo dye ligand, 2- [¯2-(4, 5- dimethyl thiazolyl) azo ] -4-E... more Abstract A new heterocyclic thiazolylazo dye ligand, 2- [¯2-(4, 5- dimethyl thiazolyl) azo ] -4-Ethoxy Phenol (DMeTAEP), (LH) was synthesized by the diazotization of 4.5-dimethyl thiazolylazonium chloride and coupling with 4- Ethoxy phenol in alkaline alcoholic solution under suitable optimized experimental conditions to yield a new azo dye ligand. The structure of ligand and its complexes was prepared from Co(III), Ni(II), Cu(II), Zn(II), Cd(II), Hg(II), Ag (I) and Au(III) ions. They confirmed by XRD, SEM, (TG-DTG) thermal analysis, 1 H-NMR,UV–visb, mass and FT-IR spectroscopic methods, elemental analysis, atomic absorption, magnetic susceptibility and molar conductance. The mole ratio [M: L], it was also studied which was 1:1 for Ag (I) and Au (III) complexes and 1:2 The rest of the metal complexes. The isolated solid complexes are found to have the general formula [M (L) 2 ] Cl n .mH 2 O, where n = 1, m = 0 when M = Co (III) and n = 0, m = 1 when M = Ni (II), and Hg(II) while n = 0 and m = 0 when M = Cu (II), Zn (II), Cd (II) and ]ML (H 2 O)] of Ag(I) – complex but Au(III)-complex structural formula was [Au(L)Cl] Cl conductivity measurements for prepared complexes showed 1:1 electrolyte for Co(III(and Au(III) complexes and non – electrolyte the rest of complexes. The spectral and analytical data revealed that this ligand behaves as a tridentate chelating agent and coordination number of all metal ions were found to be six except for Ag (I) and Au (III) which was four. The activities of complexes were examined as sensitizers in the photocatalytic reaction of p -nitro aniline (PNA) which is used as a model of water pollutants.
Tin oxide thin films were deposited on glass substrate at (400 ºC) by using chemical spray pyroly... more Tin oxide thin films were deposited on glass substrate at (400 ºC) by using chemical spray pyrolysis technique and its composed with cobalt oxide in different ratio. The structural, morphologic and optical properties of thin films are investigated by: (XRD) X-Ray Diffraction, (AFM) Atomic Force Microscopy, (UV-Vis )Ultraviolet – Visible Spectroscopy. XRD patterns indicate that the structure of tin oxide thin film is tetragonal. All prepared films were nano materials as stated by Scherrer equation. It might have been found by AFM analysis, those surface roughness increase with increasing of cobalt ratio. By provision about Tauc plots, optical band gaps for thin
The present study enclosed the employment of low cost industrial waste rice husk for the removal ... more The present study enclosed the employment of low cost industrial waste rice husk for the removal of Eriochrome Black T by adsorption technique. The impact of some parameters was studied like agitation time, biosorbent dose and temperature. The bioadsorption information were analyzed by langmuir and Freundlich isotherm models at equilibrium. The adsorption capacities (Qm) obtained from the Langmuir isotherm plots were 40.00, 39.68, 38.91 and 38.00 mg/g respectively at pH adequate to of 7.0 at 30, 40, 50and 60 C°. The study of the temperature diversity incontestible that the EBT adsorption is endothermicand spontaneous with distended irregularity at the solid-solution interface. thermodynamic quantities as change in (ΔH°), change in entropy (ΔS°) and change in free energy (ΔG°) were additionallyinvestigated. Free energy change showed that bioadsorption of Eriochrome Black T was spontaneous in any respect studied temperatures (30–60 C°).It was implicit that rice husk could also be appr...
The research described about the photocatalytic efficiency of zinc oxide on the photolysis of Ali... more The research described about the photocatalytic efficiency of zinc oxide on the photolysis of Alizarin Yellow R. Alizarin Yellow R was used as a model of azo dyes which regarded as a main water pollutants. Some variables influencing the process where studied such as: calcination temperature of catalyst, concentration of the dye, weight of catalyst, time of irradiation and doping by transition metal ions. The best degradation percentage obtained was 92.541 % by using zinc oxide prepared at calcination temperature 773 K, weight 0.3 g, dye concentration 40 ppm and through 2 h irradiation time of dye solution in the presence of medium pressure mercury lamp 400 watt. The percentage obtained was 90.850 % by using ZnO-Co, The kinetic studies showed that the reaction from pseudo first order.
A new heterocyclic thiazolylazo dye ligand, 2-[2-(4, 5-dimethyl thiazolyl) azo ]-4-Ethoxy Phenol ... more A new heterocyclic thiazolylazo dye ligand, 2-[2-(4, 5-dimethyl thiazolyl) azo ]-4-Ethoxy Phenol (DMeTAEP), (LH) was synthesized by the diazotization of 4.5-dimethyl thiazolylazonium chloride and coupling with 4-Ethoxy phenol in alkaline alcoholic solution under suitable optimized experimental conditions to yield a new azo dye ligand. The structure of ligand and its complexes was prepared from Co(III), Ni(II), Cu(II), Zn(II), Cd(II), Hg(II), Ag (I) and Au(III) ions. They confirmed by XRD, SEM, (TG-DTG) thermal analysis, 1 H-NMR,UVevisb, mass and FT-IR spectroscopic methods, elemental analysis, atomic absorption, magnetic susceptibility and molar conductance. The mole ratio [M: L], it was also studied which was 1:1 for Ag (I) and Au (III) complexes and 1:2 The rest of the metal complexes. The isolated solid complexes are found to have the general formula [M (L) 2 ] Cl n .mH 2 O, where n ¼ 1, m ¼ 0 when M ¼ Co (III) and n ¼ 0, m ¼ 1 when M ¼ Ni (II), and Hg(II) while n ¼ 0 and m ¼ 0 when M ¼ Cu (II), Zn (II), Cd (II) and ]ML (H 2 O)] of Ag(I) e complex but Au(III)-complex structural formula was [Au(L)Cl] Cl conductivity measurements for prepared complexes showed 1:1 electrolyte for Co(III(and Au(III) complexes and non e electrolyte the rest of complexes. The spectral and analytical data revealed that this ligand behaves as a tridentate chelating agent and coordination number of all metal ions were found to be six except for Ag (I) and Au (III) which was four. The activities of complexes were examined as sensitizers in the photocatalytic reaction of p-nitro aniline (PNA) which is used as a model of water pollutants.
A series of new cholesterol derivatives have been prepared via Mitsunobu reaction. The reaction w... more A series of new cholesterol derivatives have been prepared via Mitsunobu reaction. The reaction was monitored by thin‐layer chromatography (TLC) technique. All new compounds were characterized by melting points, elemental analysis, FT‐IR, 1 H, 13 C and 2D‐NMR spectroscopy. The antibacterial and antifungal activity of these derivatives was also determined. The phase transitions of the prepared derivatives were measured with the aid of differential scanning calorimetry. The textures of the mesophases have been determined with a hot stage equipped polarizing microscope, also the electrical conductivity of the solutions of these liquid crystals measured by electrical conductivity meter. The analysis showed that these prepared derivatives were liquid crystals.
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