Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 312 for “"photocatalytic"”.
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Photocatalytic applications in organic synthesis.
… oxidation of the compound a difficult task. The photocatalytic oxidation studies started with cyclohexanol as the base compound; this is the target area of the steroid without the influences of the other rings. Derivatives of cyclohexanol were used to study the effect of neighbouring groups on …
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Photocatalytic degradation of pharmaceuticals in aqueous solutions and development of new dye sensitised photocatalytic materials
This research examines the photocatalytic degradation of 3 active pharmaceutical ingredients (APIs) Famotidine (FAM), Tamsulosin Hydrochloride (TAM) and Solifenacin Succinate (SOL) using TiO2 and UV light. Photocatalytic degradation studies were monitored with individual HPLC-PDA methods which were …
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Electrodeposited nanoparticles: properties and photocatalytic applications
The work presented in this thesis reports on fundamental studies into electrodeposition of gold and silver nanoparticulate spheroids on a conducting substrate, Fluorine-doped tin-oxide, and the manipulation of the electrodeposition conditions in order to influence and control the size and surface …
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The photocatalytic degradation of phenolic compounds
… intermediates. <br></br><br></br>The rate of photocatalytic degradation of two isomeric dibromohydroxybenzonitriles was also influenced by substitution pattern. 3,5-Dibromo-2-hydroxybenzonitrile, however, is itself photolabile in daylight giving 3-bromo-2,5-dihydroxybenzonitrile in aqueous …
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Use phase performances of photocatalytic cements
Photocatalytic concrete containing nano TiO2 particles has generated interest in the 21st century for their air pollutant removal and self-cleaning performance on civil infrastructure components. In this research, photocatalytic cement pastes were evaluated for NOx removal in a laboratory …
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Novel nanomaterials for efficient photocatalytic ammonia synthesis
… fixation. Compared with bulk g-C₃N₄, the photocatalytic N₂ reduction rate of defective g-C₃N₄ nanorods as the catalysts was increased by 3.66 times. We also report a novel bismuth bromide oxide (BiOBr)-Tetracyanoquinodimethane (TCNQ) photocatalyst prepared via a facile self-assembly …
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Nanomaterials and polymeric nanocomposites for photocatalytic applications
Negli ultimi anni, le tecnologie basate sull'uso dei nanomateriali e dei nanocompositi si sono mostrate le più promettenti per la risoluzione di due dei principali problemi del pianeta, ovvero la produzione di energia da fonti rinnovabili e sostenibili e la purificazione dell'acqua. In …
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Photocatalytic thin films: their characterisation and antimicrobial properties
… and self-disinfecting properties. This is due to photocatalytic processes occurring on the film surface resulting in film superhydrophilicity and reactive oxygen species (ROS) production. These ROS and radicals readily oxidise organic pollutants and microbes adherent to the material surface. …
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VISIBLE-LIGHT-ACTIVE SEMICONDUCTOR HETEROJUNCTIONS FOR ENHANCED PHOTOCATALYTIC ACTIVITY
… been recently reported on the development of new photocatalytic materials, modification of existing materials to enhance light harvesting, and increasing the number of active sites in order to buttress photocatalytic activity. In a semiconductor photocatalytic system, photo–induced electron-hole …
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Carbazole-based porous organic polymers for photocatalytic hydrogen evolution
Photocatalytic water splitting is a direct pathway to store solar energy in chemicals. Within the last decade, porous organic polymers (POPs) proved to be promising candidates to be applied as photocatalyst. Due to the variety of building blocks, the optical properties can be tuned towards the …
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Simulated solar light assisted photocatalytic degradation of organic matters
… and homogeneous photocatalysis. The photocatalytic reactions take place under ambient operating conditions, but the photoactivity is usually constrained by the narrow wavelength spectrum for photonic activation of catalysts. The higher-end of ultraviolet (UV) spectrum required for …
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Formation Mechanisms and Photocatalytic Properties of ZnO-Based Nanomaterials
… the degradation of malachite green dye in water. Photocatalytic activity is studied as a function of morphology; and, the ZnO nanorods show enhanced photocatalytic activity for the degradation of the dye compared to hexagonal ZnO nanopyramids. After demonstrating the catalytic activity of these …
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Development of titanium dioxide nanoparticles/nanosolution for photocatalytic activity
Biological and chemical contaminants by man-made activities have been serious global issue. Exposure of these contaminants beyond the limits may result in serious environmental and health problem. Therefore, it is important to develop an effective solution that can be easily utilized by mankind. …
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Acetylene Functionalized Photocatalytic COFs for PFAS Adsorption and Degradation
Covalent organic frameworks (COFs) are of deep interest in various applications due to their highly tunable architectures and porosities. COFs used as photocatalysts have great potential because they usually possess high surface areas for adsorption, tunable pore and surface functionalities, and …
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SYNTHESIS OF Ti02- BASED PHOTOCATALYSTS FOR PHOTOCATALYTIC H2 GENERATION
… set-up by Honda and Fujishima, photocatalytic H2 generation using TiO2 has been extensively studied due to its relatively high efficiency and photostability compares with other semiconductors. The photocatalytic activity of pristine TiO2 can be substantially enhanced by …
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Electrochemical and Photocatalytic Flow Strategies for Sustainable Substrate Oxidation
… store renewable forms of energy. Electro- and photocatalytic techniques present an attractive route towards the respective conversion of renewable electricity and direct sunlight into chemical energy. Carbon nitride (CNx), a polymeric semiconductor, has recently received much attention, …
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Photocatalytic Reactor using TiO2 Thin Film on Quartz Tubes
… the performance of the coated film in proposed photocatalytic reactor in degradation of congo red, KI and Nitro phenol.</p>
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