نظام مواقع التدريسيين

الملف الشخصي

دكتوراه كيمياء تحليلية من جامعة ليستر - بريطانيا- كلية العلوم والهندسة/ قسم الكيمياء.
ماجستيرمن جامعة الكوفة- كلية التربية للبنات /قسم الكيمياء
بكلوريوس من جامعة الكوفة- كلية التربية للبنات /قسم الكيمياء.
العديد من الدورات التدربية و ورش العمل في مجال استخدام التقنيات الحديثة ومنها:
1- SEM
2- TEM
3- XRD
4- CVs
5- NMR
6- FT-IR
7- UV-Vis
8- Atomic Absorption

العديد من الدورات التدريبية في انظمة السلامة والامن الكيميائي.

الاهتمامات البحية:
1- Electrochemistr Field
2- Ionic …

عرض المزيد

البحوث المنشورة

Brønsted acidity in deep eutectic solvents and ionic liquids

الباحث الأول: Andrew P. Abbott

الباحثين الآخرين: Sahar S. M. Alabdullah, Azhar Y. M. Al-Murshedi and Karl S. Ryder

المجلة: Faraday Discussions

تاريخ النشر: None

مختصر البحث:

Despite the importance of ionic liquids in a variety of fields, little is understood about the behaviour of protons in these media. The main difficulty … Despite the importance of ionic liquids in a variety of fields, little is understood about the behaviour of protons in these media. The main difficulty arises due to the unknown activity of protons in non-aqueous solvents. This study presents acid issociation constants for nine organic acids in deep eutectic solvents (DESs) using standard pH indicator solutes. The pKIn value for bromophenol blue was found by titrating the DES with triflic acid. The experimental method was developed to understand the acid–base properties of deep eutectic solvents, and through this study it was found that the organic acids studied were slightly less dissociated in the DES than in water with pKa values between 0.2 and 0.5 higher. pKIn values were also determined for two [ionic liquids, [Bmim][BF4 and [Emim][acetate]. The anion of the ionic liquid changes the pH of the solution by acting as a buffer. [Emim][acetate] was found to be more basic than water. It is also shown that water significantly affects the pH of ionic liquids. This is thought to arise because aqueous mixtures with ionic liquids form heterogeneous solutions and the proton partitions into the aqueous phase. This study also attempted to develop an electrochemical pH sensor. It was shown that a linear response of cell potential vs. ln aH+ could be obtained but the slope for the correlation was less than that obtained in aqueous solutions. Finally it was shown that the liquid junction potential between two reference electrodes immersed in different DESs was dependent upon the pH difference between the liquids.

عرض المزيد

/Nanostructure of the deep eutectic solvent platinum electrode interface as a function of .potential and water content

الباحث الأول: Oliver S. Hammond

الباحثين الآخرين: Hua Li, b Christian Westermann, Azhar Y. M. Al-Murshedi, Frank Endres, Andrew P. Abbott, Gregory G. Warr, e Karen J. Edler a and Rob Atkin

المجلة: Nanoscale Horiz

تاريخ النشر: None

مختصر البحث:

The interfacial nanostructure of the three most widely-studied Deep Eutectic Solvents (DESs), choline chloride:urea (ChCl:Urea), choline chloride:ethylene glycol (ChCl:EG), and choline chloride:glycerol (ChCl:Gly) at a Pt(111) electrode has been …

عرض المزيد عرض البحث

Thermodynamics of phase transfer for polar molecules from alkanes to deep eutectic solvents

الباحث الأول: Andrew P. Abbott

الباحثين الآخرين: Azhar Y.M. Al-Murshedi, Odeh A.O. Alshammari, Robert C. Harris, Jalil H. Kareem, Idrees B. Qader, Karl Ryder

المجلة: Fluid Phase Equilibria

تاريخ النشر: None

مختصر البحث:

Deep eutectic solvents (DESs) have been used for the purification of oils and the extraction of active ingredients from natural products but little is known about the mechanism of…

عرض المزيد عرض البحث

Molecular and ionic diffusion in aqueous – deep eutectic solvent mixtures: probing inter-molecular interactions using PFG NMR

الباحث الأول: Carmine D’Agostino

الباحثين الآخرين: Lynn F. Gladden, Mick D. Mantle, Andrew P. Abbott Essa, I. Ahmed,b Azhar Y. M. Al-Murshedi and Robert C. Harris

المجلة: Phys. Chem. Chem. Phys

تاريخ النشر: None

مختصر البحث:

Pulsed field gradient (PFG) NMR has been used to probe self-diffusion of molecular and ionic species in aqueous mixtures of choline chloride (ChCl) based deep eutectic solvents (DESs), i… Pulsed field gradient (PFG) NMR has been used to probe self-diffusion of molecular and ionic species in aqueous mixtures of choline chloride (ChCl) based deep eutectic solvents (DESs), in order to elucidate the effect of water on motion and inter-molecular interactions between the different species in the mixtures, namely the Ch+ cation and hydrogen bond donor HBD). The results reveal an interesting and) complex behaviour of such mixtures at a molecular level. In general, it is observed that the hydroxyl protons (1 H) of Ch+ and the hydrogen bond donor have diffusion coefficients significantly different from those measured for their parent molecules when water is added. This indicates a clear and significant change in inter-molecular interactions. In aqueous Ethaline, the hydroxyl species of Ch+ and HBD show a stronger interaction with water as water is added to the system. In the case of Glyceline, water has little effect on both hydroxyl proton diffusion of Ch+ and HBD. In Reline, it is likely that water allows the formation of small amounts of ammonium hydroxide. The most surprising observation is from the self diffusion of water, which is considerably higher that expected from a homogeneous liquid. This leads to the conclusion that Reline and Glyceline form mixtures that are inhomogeneous at a microscopic level despite the hydrophilicity of the salt and HBD. This work shows that PFG NMR is a powerful tool to elucidate both molecular dynamics and inter-molecular interactions in complex liquid mixtures, such as the aqueous DES mixtures

عرض المزيد عرض البحث

ازهار ياسين محي المرشدي

ازهار ياسين محي المرشدي

الملف الشخصي

البحوث المنشورة

Brønsted acidity in deep eutectic solvents and ionic liquids

/Nanostructure of the deep eutectic solvent platinum electrode interface as a function of .potential and water content

Thermodynamics of phase transfer for polar molecules from alkanes to deep eutectic solvents

Molecular and ionic diffusion in aqueous – deep eutectic solvent mixtures: probing inter-molecular interactions using PFG NMR

المحاضرات

الكيمياء التحليلية الكيمياء التحليلية

التحليل الوزني الكيمياء التحليلية

التحليل الحجمي والوزني الكيمياء التحليلية

حسبات التحليل الوزني الكيمياء التحليلية

ثابت حاصل الاذابة الكيمياء التحليلية

العوامل المؤثرة على ذوبانية الرواسب الكيمياء التحليلية

تلوث الرواسب الكيمياء التحليلية

العومل المؤثرة على ذوبانية الرواسب التكملة الكيمياء التحليلية

طرق معالجة التلوث الكيمياء التحليلية

التكوين البلوري للراسب الكيمياء التحليلية

مراحل تكوين الراسب الكيمياء التحليلية