Browsing Dept. of Chemistry - Ph.D. / Sc.D. by Title
Now showing items 2-21 of 21
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Electrochemical impedance spectroscopy based characterization and modeling of electrochemical energy storage systems
(Bilkent University, 2021-10)In this thesis, first we demonstrate the characterization of the electrochemical processes in primary Lithium batteries utilizing Electrochemical Impedance Spectroscopy (EIS). We develop Galvanostatic-EIS at discharge ... -
Energy transfer, photosensitization and sensing with novel bodipy compounds and their supramolecular assemblies
(Bilkent University, 2017-06)Fluorescent dyes have been used for decades in many applications due to their versatility, sensitivity and many other useful properties. Since their discovery in 1968, BODIPY dyes have come forward and have been used in ... -
Exothermic catalytic decomposition of energetic ionic liquids on iridium based catalysts
(Bilkent University, 2022-01)Hydrazine (N2H4) is the most commonly used propellant for in-orbit spacecraft propulsion. However, utilization of hydrazine in space missions has challenges associated with health, environment and safety risks. Energetic ... -
Investigation of cyanide-based catalysts and hybrid assemblies for artificial photosynthesis
(Bilkent University, 2022-09)The storage and conversion of solar energy appear to be a highly promising solution to the global energy dilemma due to the sustainability and abundance of sunlight. Among various strategies, artificial photosynthesis, in ... -
Investigation of electronic properties of ionic liquid electrochemical devices by X-ray photoelectron spectroscopy
(Bilkent University, 2016-12)Attention towards electrochemical energy storage devices assembled with innovative solvent-free electrolytes ‘ionic liquids’ (ILs) has been progressively rising over the last two decades. In order to design a particular ... -
Investigation of NO2 and SO2 adsorption/desorption properties of advanced ternary and quaternary mixed oxides for DENOx catalysis
(Bilkent University, 2015-11)The main premise of the current study is the design, synthesis and functional characterization of novel catalytic materials with superior resistance against sulfur poisoning without compromising NOx storage capacity (NSC) ... -
Investigation on lithium salt - surfactant lyotropic liquid crystalline mesophases: characterization, role of water, and electrochemical behaviors
(Bilkent University, 2021-09)In this thesis, lyotropic liquid crystalline (LLC) mesophases of lithium salts (LiCl, LiBr, LiNO3, LiSCN, LiI, LiI/I2, and LiH2PO4) and 10-lauryl ether (C12H25(OCH2CH2)10OH, C12EO10) have been investigated and the LiI/I2 ... -
N-O activation on precious metal-free metal oxide based NOx removal systems
(Bilkent University, 2022-01)Elevated operational costs of platinum group metal (PGM) based environmental catalytic systems shift the focus of catalysis research towards cost-effective materials. In search for PGM-free alternative catalytic materials ... -
Nature of oxygen species on Au(111) and Ag(111) model catalysts and their role in O-H, C-H, C-C, N-H bond activation
(Bilkent University, 2017-10)Metal-catalyzed heterogeneous oxidation reactions have high importance for the large-scale production of the commodity chemicals vastly used in the chemical industry. Controlling the selectivity in such processes to ... -
New solvents for surfactant self-assembly : molten hydrated salts and concentrated aqueous electrolyte solutions
(Bilkent University, 2013)Lyotropic liquid crystalline (LLC) mesophases are formed by at least two components: a surfactant and a solvent. Common solvents in the surfactant self-assembly include water, organic liquids, and ionic liquids. In this ... -
Photo-dynamic XPS for investigating photoinduced voltage changes in semiconducting materials
(Bilkent University, 2011)The main motivation of this Ph.D. study is investigation of the photoinduced voltage changes in semiconductive materials with X-ray Photoelectron Spectroscopy (XPS). For this purpose, we have developed a technique for ... -
Preparation and characterization of niobia-containing solid acid
(Bilkent University, 2010)The research in this work is directed towards (i) the development of effective methods for synthesis of new solid acids based on zirconia and niobia resulting in high concentration of acid sites and (ii) investigation ... -
Preparation and characterization of polymer composites containing gold nanoparticles
(Bilkent University, 2011)In this study, light-assisted synthesis of gold nanoparticles in polymer films is demonstrated and characterization of gold nanoparticle-polymer composites using various techniques is shown. There are various methods ... -
Radiochemical and spectroscopic studies of cesium, barium, and cobalt sorption on some natural clays
(Bilkent University, 2000) -
Spectroscopic characterization and charging
(Bilkent University, 2008)The purpose of this work, is to investigate optical and electrical properties of bimetallic alloy and core-shell Au and Ag nanoparticles by optical spectroscopy and XPS, respectively. Several objectives have been pursued ... -
Synthesis and characterisation of mesoporous transition metal ion modified silica-zirconia and silica-sulfated zirconia materials towards NOx catalysis
(Bilkent University, 2006)The purpose of this work is to design and investigate mesostructured material as a potential support for the reaction of the methane with surface NOx species. Several objectives have been pursued in achievement of the ... -
Synthesis and characterization of cucurbituril based photoactive multifunctional assemblies
(Bilkent University, 2019-01)Preparation of cucurbituril based functional materials and their use in various applications ranging from biomedicine to optoelectronics have been studied intensely over the last decade. Supramolecular assemblies, networks ... -
Synthesis and characterization of mesoporous metal sulfide and metal selenide thin films using liquid crystalline mesophases
(Bilkent University, 2012)In this thesis, synthesis of the mesoporous CdS and CdSe by using of liquid crystalline templating (LCT) approach has been investigated. In the first part of the thesis, the thermal and structural behavior of the ... -
Towards therapeutic automata and hypoxia activated singlet oxygen generators
(Bilkent University, 2019-08)Photodynamic therapy (PDT) is a treatment modality depends on the efficient generation of singlet oxygen (1O2) through excitation of a particular chromophore (sensitizer) followed by an energy transfer to the dissolved ... -
X-Ray photoelectron spectroscopy for chemical and electrical characterization of devices extended to liquid/solid interfaces
(Bilkent University, 2018-12)Understanding of electrical and electrochemical devices in operating conditions is vital for development of new technologies. Many important characteristics that determine the performance of such devices lie on their ...
