Show: 25 50 75 100 Results

Search results: 13 out of 13

الترسيب الانتقائي اللاكهربائي للنحاس على المواد غير الموصلة باستخدام اشباه الموصلات

Author name: حسين عناية شرهان الساعدي
Supervisor name: حسين اسماعيل عبد الله | محسن عريبي حسين
General topic: Chemistry
Specific topic: Physical Chemistry
Degree: Master
University: Mustansiriyah University - College Of Science
Language: Arabic
University location: Baghdad
First pages:

تحضير بعض اطوار الالومينا ودراسة خواصها الحركية == Preparation And Kinetic Study Of Some Alumina Phasis

Author name: افراح عيسى العاني
Supervisor name: رامز العاني | خالد رسول
General topic: Chemistry
Specific topic: Physical Chemistry
Degree: Master
University: Mustansiriyah University - College Of Science
Language: English
University location: Baghdad
First pages:

تحضير وتشخيص ودراسة نظرية لتراكيب نانوية وتاثير التشويب على كفاءة التحفيز TiO2 ,CdS) الضوئي == Preparation, Characterization and Theoretical Study of (TiO2 , CdS) Nanostructure and The Effect of Co- Doping on Their Photocatalytic Efficiency

Author name: فضيله محمد حسين الياسري
Supervisor name: رمزي رشيد علي | يوسف كاظم عبد الامير
General topic: Chemistry
Specific topic: Physical Chemistry
Degree: Doctorate
University: Mustansiriyah University - College Of Science
Language: English
University location: Baghdad

تحضير وفعالية التحفيز الضوئي ل TiO النانوي المدعم بالعناصر المشتركة في مذيبات مختلفة ودراسته نظريا == Synthesis and photocatalytic Activity of Co - doped TiO2 Nanoparticles in Different Solvents and its Theoretical study

Author name: دينا عبد الكريم علي
Supervisor name: رمزي رشيد علي العاني | حسين اسماعيل عبد الله
General topic: Chemistry
Specific topic: Physical Chemistry
Degree: Doctorate
University: Mustansiriyah University - College Of Science
Language: English
University location: Baghdad
First pages:
Abstract: The nano particles Titanium dioxide (TiO2) were prepared using chemical modifiers and dopants. Three carboxylic acids were used as a chelating agents : Malonic acid (Mal.) (COOH CH2 COOH), adipic acid (Ad.) (COOH(CH2)4COOH) and Aconitic acid (Aco.) (COOHCH2CH=C(COOH)2) in three different mol ratios (2/1, 1/1 and 1/2 of TiCl4 /acid) to give three complexes : 1. [Ti2(Mal)(OH)6(EtOH)4] (EtOH)22. [Ti2(Ad)(OH)6(H2O)2]H2O3. [Ti3(ACO)(OH)a(EtOH)6](EtOH)2These complexes characterized by FTIR and flame atomic absorption to suggest the type of binding between Ti+4 and the carboxylate and predict the formula structures of complexes.The three complexes studied theoretically using semi - empirical method of hyper chem. 8.0 program (PM3) to : Optimized the structural geometries, The heat of formation (ΔH○f), binding energy (ΔEb)and total energy (ΔET) for the three complexes were calculated at 298 K○. The bond length, vibration spectra and electronic spectra for the three complexes were estimated and then compared with the experimental values. The theoretical results agreed with those found experimentally.After calcinations at three deferent temperature (500,700 and 900)ºC the observed TiO2 samples were characterized by XRD to determined the anatase phase ratio in the samples . At 500 o C All samples with mole ration 1 : 1 (TiCl4 : Acid) give 100% anatase phase . At 700ºC 93% retention of anatase for (Ti1 : Ad1) sample,88% anetase retention for (Ti1 : Mal1) sample and 95% anatase retention for (Ti1 : ACO2) are obtained. At 900ºC only one samples of Ti : ACO give 40% anatase retention but the other samples have very low percentage of anatase.The (SEM) and (AFM) were used to study the morphology of the samples and determined the particles size for the samples calsined at 500 ºC.The minimum average diameter obtained for (Ti : Ad1) sample calcined (70nm) and all other samples below 100 nm. The photocatlytic studied of these samples calcined at 500,700and 900 ºC was examined for degradation of para - nitro phenol under Uv - visible light and give a good removed ratio and rate of degradation especially for the samples that have small ratio of rutile.The optimum Adipic acid, tetra chloride mole ratio (TiCl4 : Adipic 1 : 1)were used to prepare TiO2 singly doped and doubly doped with Pt4+, Au3+, S6+and Se4+ ions. These samples prepared and a calcined at 500ºC to give (Pt - TiO2), (Au - TiO2), (S - TiO2) and (Se - TiO2) samples with mole ratio 1% of ( ) and prepared Co - doped TiO2 with (Pt,Au - TiO2),(Pt,S - TiO2),(Pt,Se - TiO2), (Au,S - TiO2),(Au,Se - TiO2) and (S - Se - TiO2) in two mole ratio (1/100 and 2/100 of ) these samples characterized by Uv - visible adsorption spectroscopy to determine the band gab of the doped - TiO2 and Co - doped TiO2 sample. The X.R.D. used to determine the anatase ratio in the doped and Co - doped samples and all samples give 100% anatase accept the (Au - TiO2), (Au,Se - TiO2) and (Pt,Au - TiO2) samples which contain 15% rutile.The AFM and SEM were used to study the morphology of the doped and Co - doped samples to determine the particle size. The samples Pt - TiO2 give particles similar to size similar to that of Ti1 : Ad1 samples but the other samples give larger particles size .The photocatalytic degradation of P - Np under visible irradiation using the doped and Co - doped samples .The results show good removal ratio more than the undoped sample.

دراسة المساحة السطحية, المسامية وامتزاز بعض المركبات العضوية على الانابيب النانوية للكاربون وTiO2 == Study of surface area, porosity and adsorption of some organic compound on carbon and TiO2 nanotube

Author name: انفال اسماعيل ابراهيم
Supervisor name: يوسف كاظم عبد الامير
General topic: Chemistry
Specific topic: Physical Chemistry
Degree: Master
University: Mustansiriyah University - College Of Science
Language: Arabic
University location: Baghdad
First pages:

دراسة ضوئية لمعقدات مشتقات الكوينولين مع ايونات الحديديك والفناديوم الخماسي والكوبلت الثلاثي في مذيبات مختلفة == Photo chemistry study of quinoline derivates complexes with Fe(III), V(V) and Co(III) ion in different solvent

Author name: حوراء قاسم حامي
Supervisor name: حسين اسماعيل عبد الله
General topic: Chemistry
Specific topic: Physical Chemistry
Degree: Master
University: Mustansiriyah University - College Of Science
Language: Arabic
University location: Baghdad
First pages:

دراسة امتزاز مبيدي الادغال(2?4) - D والترفلان على سطوح اطيان عراقية مختارة == A Study of Adsorption of Herbicide 2,4 - D and Triflan on selected Iraqi Clay Surfaces

Author name: عذراء سلمان احمد
Supervisor name: سحر صالح عبد القادر
General topic: Chemistry
Specific topic: Physical Chemistry
Degree: Master
University: Mustansiriyah University - College Of Science
Language: Arabic
University location: Baghdad
First pages:

دراسة طيفية وكيمياضوئية لمعقدات من قواعد شيف مع ايونات Co+3و V+5و Fe+3 في مذيبات مختلفة == Spectroscopic and Photochemical Studies for Complexes of Schiff Base with Fe+3, V+5 and Co+3 in Different Solvents

Author name: شيماء حامد جبر
Supervisor name: حسين اسماعيل عبد الله
General topic: Chemistry
Specific topic: Physical Chemistry
Degree: Master
University: Mustansiriyah University - College Of Science
Language: Arabic
University location: Baghdad
First pages:

الاكسدة الضوئية لمركبين عضويين ملوثة للمياه باستخدام العوامل المحفزة == Photo Oxidation of two Organic Compounds as Water Pollutant by using Synsitizers.

Author name: امل صاحب مهدي السعدي
Supervisor name: رمزي رشيد علي العاني
General topic: Chemistry
Specific topic: Physical Chemistry
Degree: Master
University: Mustansiriyah University - College Of Science
Language: Arabic
University location: Baghdad
First pages:

التجزئة الضوئية المحتثة لبعض المشتقات السليلوز == Induced Photodegradation Of Cellulose Derivatives By Aromatic Carbonyl Compounds

Author name: زينب نايف مجيد
Supervisor name: صلاح محسن عليوي | طارق سهيل نجم
General topic: Chemistry
Specific topic: Physical Chemistry
Degree: Doctorate
University: Mustansiriyah University - College Of Science
Language: English
University location: Baghdad
First pages:

دراسة فيزياوية لتحول الكبريت الحلقي الثماني الى الكبريت الكاتيني S == Physical Studying of Octacyclic Sulfur Conversion into Catena Sulfur S?

Author name: اباء اسعد حسن حموشي
Supervisor name: حسين اسماعيل عبد الله | يوسف كاظم عبد الامير
General topic: Chemistry
Specific topic: Physical Chemistry
Degree: Master
University: Mustansiriyah University - College Of Science
Language: Arabic
University location: Baghdad
First pages:

تحضير ودراسة الكيمياء الضوئية لبعض معقدات الازو وقواعد شف الفناديوم الخماسي == Synthesis and Studying Photochemistry of some Azo Compounds and Schiff Bases of Vanadium (V) Complexes

Author name: وائل محمد حمود
Supervisor name: يوسف كاظم الحيدري | حسين اسماعيل
General topic: Chemistry
Specific topic: Physical Chemistry
Degree: Master
University: Mustansiriyah University - College Of Science
Language: Arabic
University location: Baghdad
First pages:

تحضير ودراسة طيفية لمعقدات بعض الايونات الفلزية مع بعض قواعد شف

Author name: اسماء كاظم عيال
General topic: Chemistry
Specific topic: Physical Chemistry
Degree: Master
University: Mustansiriyah University - College Of Science
Language: Arabic
University location: Baghdad
First pages: