Browsing Theses & Dissertations by Title
Now showing items 3685-3704 of 4100
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Synthesis and characterization of flexible zinc oxide-based composites
(2018-12-12)An organic flexible optoelectronic device (f-OLED), composed by a conductive polymeric substrate (PEDOT:PSS) and a composition-controlled semiconductive layer of ZnO was designed based on the industry’s requirements of ... -
Synthesis and characterization of magnetic nanoparticles for use as sensors
(2009-06)A comprehensive study of physical and magnetic properties of cobalt substituted ferrite and magnetite nanoparticles synthesized by thermal-decomposition was carried out. Initially, a systematic study of the effect of ... -
Synthesis and characterization of metal-doped titanium dioxide and treatability studies for photo-degrading atrazine and methylene blue under spectrum of UV and visible light
(2021-05-14)TiO2 nanoparticles were synthesized and doped with metals ions such as iron (Fe +3) and tungsten (W+4) to achieve photocatalytic properties under the visible light spectrum then TiO2 nanocomposite where immobilized within ... -
Synthesis and characterization of modified mesoporous silicates for the adsorption of pharmaceutical and personal care products
(2011)PPCPs have been recently identified as emerging contaminants due to their persistence in our potable water supply and aquatic systems. Unfortunately, traditional water treatment methods are inadequate for the removal of ... -
Synthesis and characterization of nanostructured ZnO- and BiFeO3-Based Multifunctional Materials
(2012)The effective incorporation of dopant species into ZnO host structure usually induces changes in its physical and chemical properties enabling the establishment of novel multi-functional properties. In the case of doping ... -
Synthesis and characterization of polyimide cobalt ferrite nanocomposites for potential applications in mems
(2009)In the present work, cobalt ferrite nanocrystals were synthesized under size-controlled conditions in aqueous phase and incorporated into a polyimide matrix at various volumetric loads. Synthesized 20nm-cobalt ferrite ... -
Synthesis and characterization of porous inorganic adsorbents for the removal of PPCPs via complexation and size exclusion principles
(2013)Pharmaceutical and personal care products (PPCPs) are considered emerging contaminants that present great challenges for their remediation from water systems. Unfortunately, traditional water treatment methods are not ... -
Synthesis and characterization of sulfonated amine block copolymer membranes for fuel cells and specialty separations applications
(2021-07-09)This work focuses on the synthesis and characterization of block copolymers membranes with multi-ionic domains to analyze the effect of the morphological and chemical changes on the transport properties for their use in ... -
Synthesis and characterization of Sulfonated Poly(Styrene-Isoprene-Styrene): Effects of linear vs branched morphology and counter-ion substitution
(2009)This investigation studied the resulting nanostructure of ionic membranes composed of sulfonated copolymers with thermoplastic and elastomeric blocks. Linear poly(styrene-isoprenestyrene) (L-SIS) and branched poly(styren ... -
Synthesis and characterization of ZnO-based nanostructures for potential biomedical applications
(2013)Zinc Oxide (ZnO) is a high quality semiconductor material that has been studied for several decades due to its applications in optics and optoelectronics. Currently, ZnO-based nanoparticles (NPs) are being widely studied ... -
Synthesis and electrochemical behavior of shape-controlled Pt nanoparticles synthesized using water in oil microemulsion in acid aqueous phase for ammonia oxidation
(2019-07)…La presente Tesis Doctoral ha propuesto optimizar el método de microemulsión agua en aceite con el propósito de obtener nanopartículas de Pt con formas preferenciales y que cumpla con ... -
The Synthesis and evaluation of a chitosan-humic acid composite for the removal of atrazine from aqueous solutions
(2014)Atrazine is an artificial organic herbicide scientifically known as 2-chloro-4-(ethylamino)-6- (isopropylamino)-s-triazine. It is commonly used in agriculture to control growth of unwanted weeds, by inhibiting its ... -
Synthesis and evaluation of alginate coated magnetite nanoparticles for the removal of dyes from wastewater
(2020-12-11)The discharge of wastewater from the dyeing industry is an environmental concern across the world. These effluents are considered highly toxic since they contain high concentrations of synthetic dyes, which are a great ... -
Synthesis and evaluation of novel heterocyclic ferrocenyl chalcone hybrids as possible anticancer and antioxidant agents
(2023-06-02)Breast cancer is currently the most diagnosed cancer in women, with 287,850 new cases estimated in 2022, as reported by the American Cancer Society. Therefore, finding an effective treatment for this disease is imperative. ... -
Synthesis and multiferroic properties of Bi3.4M0.6Ti3O12/CoFe2O4 (M= La3+ and Sm3+) multilayer structures
(2013)In search of new multiferroic materials Bi4-xMxTi3O12 and CoFe2O4 alternate layers were investigated. For this work, multilayer films of Bi3.4M0.6Ti3O12 with M = La3+, Sm3+ and CoFe2O4 were synthesized by chemical solution ... -
Synthesis and study of structural and magnetic properties of ferrite nanocrystal for magneto caloric application
(2011)Pure and doped CoxZn1-xFe2O4 (0.5≤x≤1.0) nanocrystals have been synthesized by conventional and modified size-controlled coprecipitation methods. In the latter, the control of the oversaturation in reacting solutions, ... -
Synthesis and surface modification of metallic nanoparticles: Sensitivity, influence of shape, concentration and excitation wavelength on chemical detection by Sers
(2010-05)Surface-Enhanced Raman Spectroscopy (SERS) is a powerful spectroscopic technique that can be used for detecting analytes at very low concentrations. In SERS, the intensity of vibrational signatures can be enhanced by factors ... -
Synthesis and thermo-mechanical characterization of bare and composite chitosan film
(2012)In this present work, chitosan thin films were synthesized via two synthesis techniques: sol casting and spin coating. Subsequently, silver nanoparticles or carbon black particles were incorporated into the polymeric ... -
Synthesis and thermomechanical characterization of calcium alginate polymer films
(2013)In the present work, the precise characterization of structural and thermomechanical properties of alginate films was evaluated. For this aim, sodium alginate films crosslinked with divalent Ca2+ and Ba2+ ions were synthesized ... -
Synthesis of CdS nanoparticles in a microwave oven and their application for blood serum sensing of cardiac patients
(2010)Nanoparticles include any type of particle up to 100 nm in size. Because of their properties, they play an important role in a wide variety of fields. We report here the formation of CdS nanoparticles from the microwave ...