النوع التميز

تميز دراسي وبحثي

البحوث المنشورة

البحث (1):

عنوان البحث:

Wastewater as a photoelectrochemical fuel source: Light-to-electrical energy conversion with organochloride remediation

رابط الوصول:

Link

تاريخ النشر:

30/04/2012

موجز عن البحث:

A photogalvanic cell that employs 2,4-dichlorophenol as a fuel source, an N-substituted phenothiazine as light harvester, and sacrificial zinc anode is presented, and shown to afford a ca. 4% light-to-electrical power conversion efficiency in violet light. 

البحث (2): 

عنوان البحث:

Concentration-dependent diffusion coefficients of tert-butylferrocene within dodecyltrimethylammonium chloride/brine liquid crystals

رابط الوصول:

Link

تاريخ النشر:

19/01/2012

موجز عن البحث:

The title lyotropic liquid crystal is examined as a framework to investigate long-range charge transfer, using tert-butylferrocene (tBuFc) as model hydrophobic system. It is found that the apparent one-dimensional diffusion coefficient depends on the tBuFc loading. It is suggested that an efficient relay mechanism for electron transfer is through the partitioning of the oxidised form between the two subphases, with inter-pseudophase reaction.

البحث (3):

عنوان البحث:

Voltammetry within structured liquid nanosystems: Towards the design of a flexible, three-dimensional framework for artificial photosystems

رابط الوصول:

Link

تاريخ النشر:

13/03/2013

موجز عن البحث:

Normal lyotropic liquid crystals (in the lamellar or hexagonal phases) are investigated as a route to afford a structured, three-dimensional, quasi-biphasic framework within which electron transfer cascades may be initiated voltammetrically. For model systems, we show that these can take place through reagent partitioning between the hydrophobic and hydrophilic subphases, and illustrate how the structure and its orientation, the nature of the ionic doping of the framework, and the hydrophobicity of the redox analyze may give rise to changes in the observed voltammetric waveshape. For the case of an artificial mimic of the first few stages of Photosystem I, we demonstrate that photo-induced electron transfer is likewise affected by the orientation, and develop a system of photon efficiency of 0.1%.

المؤتمرات العلمية:

المؤتمر (1):

عنوان المؤتمر:

The 6^th  Saudi Scientific International Conference-London

تاريخ الإنعقاد:

Oct 2012

بلد ومكان الإنعقاد:

UK

طبيعة المشاركة:

Oral presentation

عنوان المشاركة:

Wastewater as a Photoelectrochemical Fuel Source Light-to-Electrical Energy Conversion with Organochloride Remediation

الملخص:

Oral presentation about (Wastewater as a Photoelectrochemical Fuel Source Light-to-Electrical Energy Conversion with Organochloride Remediation.

A photogalvanic cell that employs 2,4-dichlorophenol as a fuel source, an N-substituted phenothiazine as light harvester, and sacrificial zinc anode is presented, and shown to afford a ca. 4% light-to-electrical power conversion efficiency in violet light.

المؤتمر (2):

عنوان المؤتمر:

Great Western Electrochemistry Meeting-Bath

تاريخ الإنعقاد:

June 2012

بلد ومكان الإنعقاد:

UK

طبيعة المشاركة:

Oral Presentation

عنوان المشاركة:

Concentration-dependent diffusion coefficients of tert-butylferrocene jwithin dodecyltrimethylammonium chloride/brine liquid crystals

الملخص:

Oral Presentation about Concentration-dependent diffusion coefficients of tert-butylferrocene within dodecyltrimethylammonium chloride/brine liquid crystals.

The title lyotropic liquid crystal is examined as a framework to investigate long-range charge transfer, using tert-butylferrocene (tBuFc) as model hydrophobic system. It is found that the apparent one-dimensional diffusion coefficient depends on the tBuFc loading. It is suggested that an efficient relay mechanism for electron transfer is through the partitioning of the oxidised form between the two subphases, with inter-pseudophase reaction.