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Now showing items 1-20 of 28
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Effects of some transition metal salts on the synthesis of mesoporous silica
(Bilkent University, 2005) -
Investigation of lithium salt-nonionic surfactant mesophases and their applications in solar cells as gel electrolyte
(Bilkent University, 2013)Some salts and some nonionic surfactants self-assemble together into lyotropic liquid crystalline (LLC) mesophases. The salt can be either in aqueous solution phase or in its molten phase in the self-assembly process. ... -
Investigation of lithium salts-nonionic surfactant lyotropic liquid crystalline mesophases in a dye sensitized solar cell as gel electrolyte
(Bilkent University, 2015-09)Liquid crystals are one of the most widely studied and used materials in chemistry. The properties of liquid crystals make them interesting to research also for various electrochemical applications. In this context, lithium ... -
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 of two new lyotropic liquid crystalline systems : [Zn (formula) and [Zn (formula)
(Bilkent University, 2008)The transition metal aqua complex salts (TMS) can be dissolved in oligo (ethylene oxide) type non-ionic surfactants (CnH2n+1(CH2CH2O)mOH, denoted as CnEOm) with very high salt/surfactant ratios to form lyotropic liquid ... -
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 ... -
Lyotropic liquid crystalline (LLC) phosphoric acid-10-lauryl ether: mesophases, proton conductivity and synthesis of transparent mesoporous hydroxyapatite thin films
(Bilkent University, 2014-06)Many salts, acids, and bases with low deliquescence relative humidity (DRH) can organize non-ionic surfactants into lyotropic liquid crystalline (LLC) mesophases that form a ready platform for the synthesis of mesoporous ... -
Lyotropic liquid crystalline mesophases from acid-salt-surfactant systems: synthesis and characterization of mesoporous LiMPO4 (M=Mn(II),Fe(II),Co(II) AND Ni(II))
(Bilkent University, 2019-09)This study presents the synthesis and characterization of mesoporous lithium metal phosphates (LMPs) of Mn(II), Fe(II), Co(II), and Ni(II). The LMPs were synthesized using a modified molten salt self-assembly (MASA) method. ... -
Molten Salt Assisted Self-Assembly (MASA) : synthesis of mesoporous silica-ZnO and mesoporous CdO thin films
(Bilkent University, 2012)A series of mesostructured salt-silica-two surfactants (salt is [Zn(H2O)6](NO3)2, ZnX or [Cd(H2O)4](NO3)2, CdYand surfactants are cetyltrimethylammonium bromide (CTAB) and 10-lauryl ether, C12H25(OCH2CH2)10OH, C12EO10) ... -
Molten salt assisted self-assembly (MASA) : synthesis, characterization and solar cell performances of mesoporous silica-CdSe and titania-CdSe thin films
(Bilkent University, 2015-05)A series of solutions of a salt ([Cd(H2O)4](NO3)2), a polymerizing agent (Si(OCH3)4, TMOS or Ti(OC4H9), TTBO), two surfactants (cetyltrimethylammonium bromide, CTAB and 10-lauryl ether, C12H25(OCH2CH2)10OH, C12EO10) have ... -
Molten salt assisted self-assembly process: synthesis of mesoporous transition metal oxide thin films and CdSe sensitized TiO2 photoanodes
(Bilkent University, 2017-09)Fabrication of mesoporous transition metal oxide thin films are important for the development of many energy related technologies. Molten salt-assisted-self-assembly (MASA) method, that has simple stages such as preparation ... -
A new lyotropic liquid crystalline system: Oligo (ethylene oxide) surfactants with transition metal complexes and the synthesis of mesoporous metal sulfides
(Bilkent University, 2001)In this study a new templating method, which can be used to synthesise mesporous materials, has been developed. The main objective of this work is to form organic mesophase in the presence of inorganic salts. This is an ... -
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 ... -
The phase behavior and synthesis of mesostructured coupled semiconductor thin films : MESO-CdS-TiO2
(Bilkent University, 2009)Mesostructured [Cd(H2O)4](NO3)2 - titania - P123 ((PEO)20(PPO)70(PEO)20, PEO = -OCH2CH2-, PPO = -OCH(CH3)CH2-) materials have been investigated by changing the [Cd(H2O)4](NO3)2 and titania content of the structures. ... -
Solid-solution of Cd(formula)Zn(formula)S nanocrystals in the channels of mesostructured silica films
(Bilkent University, 2006)Mesostructured silica can be used as a reaction medium to produce solidsolution of Cd1-xZnxS nanocrystals as thin films. These films were synthesized from oligo(ethylene oxide) non-ionic surfactant (CH3(CH2)11(OCH2CH2)10OH, ... -
Synthesis & characterization of mesoporous LiCoO2 and LiMn2O4 thin films
(Bilkent University, 2017-01)This work focuses on the adaptation of molten salt assisted self-assembly (MASA) method for the synthesis and characterization of mesoporous LiCoO2 and LiMn2O4 materials without a polymerizing agent in the media. The MASA ... -
Synthesis & characterization of mesoporous zinc cobaltite thin films and its electrochemical application for OER
(Bilkent University, 2021-07)Transition metal cobaltite materials were widely used as electrode material due to their excellent electrochemical performance, flexibility to be prepared with different morphologies and, high surface area. In this thesis, ... -
Synthesis & characterization of modified mesoporous LiMn2-xCoxO4 thin films as water oxidation electrocatalysts
(Bilkent University, 2019-09)The lithiated transition metal oxides (LMO) are important group of materials in energy applications, particularly as water oxidation electrocatalysts. The mesoporous LiMn2-xCoxO4 thin film has been synthesized by using ... -
Synthesis and characteization of mesoporous nickel oxide and nickel cobaltite thin films
(Bilkent University, 2019-09)In this thesis work, molten-salt assisted self-assembly (MASA) approach was adopted to synthesize mesoporous nickel oxide (m-NiO) and nickel cobaltite (m-NiCo2O4) thin films. The m-NiO and m-NiCo2O4 films were obtained by ... -
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 ...