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Article
Preparation and Adsorption of [Bis(1,10-phenanthroline) nitratolead(II)]nitrate Complex on Activated Carbon and Zeolite Surfaces

Author: Barakat A. F. Kamel
Journal: Al-Nahrain Journal of Science مجلة النهرين للعلوم ISSN: (print)26635453,(online)26635461 Year: 2014 Volume: 17 Issue: 3 Pages: 27-38
Publisher: Al-Nahrain University جامعة النهرين

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Abstract

In this research the complex [Bis(1,10)-phenanthroline) nitratolead (II)] nitrate was prepared and the adsorption of the complex on (activated carbon, zeolite and mixture of them) was studied in equal weights under various conditions such as: temperature, contact time, pH and the change in the weights of adsorbents. With respect to activated carbon, the adsorption quantity was increased at: (30-50)C0 and (60-90) min, the suitable weight of activated carbon for adsorption was (0.15)g at pH (9). Zeolite, the adsorption quantity was increased at the temp. reached (50)C0 in a contact time lower than (90) min at a critical weight (0.3)g and pH(9). Finally when both adsorbents were mixed, the adsorption quantity was increased at temp. reached (50)C0 with the range of time (60-90) min in a weight (0.25)g at the range of pH(5-11).

تـم فـي هـذا البحـث تحضيـر معقــد[Bis(1,10-phenanthroline)nitratolead(II)]nitrate ودراسة امتزاز المعقـد على سطوح (الكاربون النشط، الزيولايت ومزيج من السطحين) بأوزان متساوية وتحت ظروف مختلفة مثل التغير في: درجة الحرارة، وقت ارتباط السطح بالمحلول، pH المحلول والتغير في اوزان السطوح. بالنسبة للكاربون النشط فأن كمية الامتزاز ازدادت عند درجـة حـرارة تتـراوح بيـن C0 (50-30) وبزمـن min(90-60) والوزن المثالي للامتزاز (g0.15) عند pH(9)، اما الزيولايت فأن كمية الامتزاز ازدادت عند درجة حـرارة وصلت الى (C0 50) وبزمن اقل مـن (min 90) وبوزن (g 0.3) و pH (9)، واخيرا عندما تم مزج السطحين مع بعضهما وبأوزان متساوية فأن كمية الامتزاز ازدادت عند درجة حرارة وصلت الى (C0 50)، بزمن يتراوح بين (min 60-90) وبوزن (g 0.25) وعند pH(5-11).


Article
Preparation and Theoretical Study of the Schiff Base 1,3 -bis[(E)-(2-hydroxy-3-nitrophenyl)methyl indene]urea and its Complexes using Semi-empirical Method (PM6)

Author: Barakat A. F. Kamel
Journal: Al-Mustansiriyah Journal of Science مجلة علوم المستنصرية ISSN: 1814635X Year: 2016 Volume: 27 Issue: 1 Pages: 29-32
Publisher: Al-Mustansyriah University الجامعة المستنصرية

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Abstract

In this research the ligand 1,3-bis[(E)-(2-hydroxy-3-nitrophenyl) Methyl idene] urea and its complexes using salts of Cu(II), Ni(II) and V(IV) were prepared and they have been identified using the spectroscopic measurements (ultraviolet-visible and infrared) spectroscopy and conductivity measurements, all these measurements confirmed that the geometry structures of the complexes Cu(II) and Ni(II) were distorted octahedron but the geometry structure of V(IV) is quintet. The theoretical study of the ligand and its complexes using GaussView05/Gaussian09w with semi-empirical (PM6) method were conducted to measure the (IR and UV spectroscopy), and some of physical and thermodynamic properties.

غير الخماسية . وأجريت الدراسة النظرية ل يجند والمجمعات وذلك باستخدام GaussView05 / Gaussian09w مع طريقة شبه تجريبي ( PM6 ) لقياس ( الأشعة تحت الحمراء و الأشعة فوق البنفسجية الطيفي ) ، وبعض الخصائص الفيزيائية و الحرارية

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Article
Synthesis and Antibacterial Activity of ZnO Nanoparticles Using the Precipitate and Irradiation Methods

Author: Athraa S. Ahmed , Shaimaa H. Jaber , Barakat A. F. Kamel , Kafi M. Dawood
Journal: Iraqi Journal of Biotechnology المجلة العراقية للتقانات الحياتية ISSN: 18154794 Year: 2019 Volume: 18 Issue: 2 Pages: 88-94
Publisher: Baghdad University جامعة بغداد

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Abstract

In this study, ZnO NPS were synthesized in two methods: the precipitate and irradiation methods. X-Ray powder Diffraction, Transmission and Scanning Electron Microscopy were used to study the crystal structure and surface morphology of the synthesized NPS, which showed that the average particle size of ZnO NPS synthesized by irradiation method was better than which synthesized by precipitate method. The antibacterial activity against staphylococcus epidermidis and E.coli bacteria were studied and showed that ZnO NPs prepared by Irradiation method have higher antibacterial activity against S.epidermidis and E.coli than ZnO NPs prepared by precipitate method because of ZnO NPs prepared by Irradiation method smaller than ZnO NPs prepared by precipitate method. In current study, we concluded that irradiation method is better than precipitate method in the preparation of ZnO NPS and in the inhibition of the work of types of bacteria such as (staphylococcus epidermidis and E.coli).


Article
Synthesis and Characterization of Nano-Aluminum Oxide Via Biological and Electrochemical Methods

Authors: Barakat A. F. Kamel --- Shaimaa H. Jaber --- Amel S. Mahdi --- Mohammed A. K. Alsouz --- et al.
Journal: Al-Mustansiriyah Journal of Science مجلة علوم المستنصرية ISSN: 1814635X Year: 2018 Volume: 29 Issue: 4 Pages: 67-72
Publisher: Al-Mustansyriah University الجامعة المستنصرية

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Abstract

In this research work, the nanoparticles of aluminum oxide were synthesized by two ways. The first way is the biological by using (Pseudomonas aeruginosa) bacteria with a rate diameter (102.35) nm. The second way is the electrochemical with a rate diameter (62) nm. These nanoparticles were characterized by Atomic Force Microscopy (AFM), X-Ray diffraction technique (XRD), Transmission Electron Microscopy (TEM) and Scanning Electron Microscopy (SEM). Alumina nanoparticles are thermodynamically stable particles over a wide temperature range. The biological activity of these nanoparticles toward different species of pathogenic bacteria (Staphylococcus aureus) and (Pseudo monas) has been investigated. The nanoparticles prepared by chemical way was more effective in the inhibition of bacteria compared with that nanoparticles prepared by biological way.

تم في هذا البحث تحضير الدقائق النانوية لاوكسيد الالمنيوم بطريقتين: الطريقة الاولى هي الطريقة البايولوجية بأستخدام بكتريا (Pseudomonas aeruginosa) وبمعدل (102.35) نانومتر. اما الطريقة الثانية فهي الطريقة الكهروكيميائية وبمعدل (62) نانومتر. تم تشخيص هذه الجسيمات باستخدام اجهزة ( مجهر القوة الذرية، تقنية الاشعة السينية، مجهر الانتقال الالكتروني ومجهر الماسح الالكتروني) ووجد ان هذه الجسيمات مستقرة ثرموديناميكيا على نطاق حراري واسع. كما ودرست الفعالية البايولوجية للجسيمات النانوية تجاه انواع مختلفة من البكتريا المسببة للامراض مثل (Staphylococcus aureus) و (Pseudo monas) ووجد ان الدقائق النانوية المحضرة بالطريقة الكهروكيميائية اكثر فعالية في تثبيط هذه الانواع من البكتريا مقارنة بالدقائق النانوية المحضرة بالطريقة البايولوجي

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