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Dissertations / Theses on the topic 'Dioxins – Synthesis'

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Published: 4 June 2021
Last updated: 17 February 2022

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1

Krivickas, Sara Jane. "Synthesis and transformation of 1,2-dioxines linked to aromatic systems : a thesis submitted in fulfilment of the requirements of the degree of Doctor of Philosophy /." Title page, contents and summary only, 2003. http://web4.library.adelaide.edu.au/theses/09PH/09phk9297.pdf.

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Thesis (Ph.D.)--University of Adelaide, School of Chemistry and Physics, Discipline of Chemistry, 2004.<br>"September 2003" Addendum inserted inside backcover. Include bibliographical references (leaves 165-177).
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2

Chatkittikunwong, Watcharee. "Analytical synthesis and stability studies of halogenated dibenzo-p-dioxins and dibenzofurans." Thesis, University of East Anglia, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.335138.

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3

Coyle, William J. "Design and synthesis of chiral dihydrodioxins, 2,2,3-triaryl- and 2,3-diaryl-2,3-dihydrophenanthro[9,10-b]-1,4-dioxins, as photochemical DNA cleaving agents." Cincinnati, Ohio : University of Cincinnati, 2001. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=ucin998313007.

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4

Coyle, William Joseph. "Design and Synthesis of Chiral Dihydrodioxins, 2,2,3-triaryl- and 2,3-diaryl-2,3-dihydrophenanthro[9,10-b]-1,4-dioxins; As Photochemical DNA Cleaving Agents." University of Cincinnati / OhioLINK, 2001. http://rave.ohiolink.edu/etdc/view?acc_num=ucin998313007.

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5

Nowak, Pawel. "2-substituted-1,3-dioxan-5-ones, synthesis, reactions and synthetic applications." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp02/NQ32795.pdf.

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6

Raza, Ghulam. "Titanium dioxide nanomaterials, synthesis, stability and mobility in natural and synthetic porous media." Thesis, University of Birmingham, 2017. http://etheses.bham.ac.uk//id/eprint/7387/.

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Highly ordered, stable and reproducible TIO\(_2\) NMs were synthesized using different precursors and alcohol mixtures. Various shapes of TIO\(_2\) including spherical NPs with shape factor of 0.9 or more, nanocubes, nanorods and ellipsoids were successfully fabricated. Spherical round anatase and rutile ellipsoids were selected and stabilized with different surfactants including PEG, PVP, sodium citrate and SRFA. Sodium citrate and SRFA proved to be the best stabilizing agents as compared to other surfactants used. The stabilized NMs were tested for their aggression kinetics in the presence o
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7

Imran, ul-haq Muhammad. "Synthesis of fluorinated polymers in supercritical carbon dioxide (scCO₂)." Phd thesis, Universität Potsdam, 2008. http://opus.kobv.de/ubp/volltexte/2008/1986/.

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For the first time stabilizer-free vinylidene fluoride (VDF) polymerizations were carried out in homogeneous phase with supercritical CO₂. Polymerizations were carried out at 140°C, 1500 bar and were initiated with di-tert-butyl peroxide (DTBP). In-line FT-NIR (Fourier Transform- Near Infrared) spectroscopy showed that complete monomer conversion may be obtained. Molecular weights were determined via size-exclusion chromatography (SEC) and polymer end group analysis by 1H-NMR spectroscopy. The number average molecular weights were below 104 g∙mol−1 and polydispersities ranged from 3.1 to 5.7 d
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8

Perry, Derek Michael. "FISCHER-TROPSCH SYNTHESIS IN SUPERCRITICAL PHASE CARBON DIOXIDE." OpenSIUC, 2009. https://opensiuc.lib.siu.edu/theses/155.

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The Fischer-Tropsch (FT) synthesis reaction is an increasingly valuable tool that produces very clean alternative fuels for the transportation and other industries. By utilizing a ready supply of syngas (H2 and CO mixture) from coal, natural gas, or a biomass source, the catalyzed reaction looks to be a promising alternative which could potentially end dependency on imported petroleum. The supercritical phase FT synthesis reaction has shown, in numerous other studies, to possess superior heat transfer capabilities, high desorption rates from the catalyst surface (enhancing catalyst life), an
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9

Daza, Yolanda Andreina. "Closing a Synthetic Carbon Cycle: Carbon Dioxide Conversion to Carbon Monoxide for Liquid Fuels Synthesis." Scholar Commons, 2016. http://scholarcommons.usf.edu/etd/6079.

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CO2 global emissions exceed 30 Giga tonnes (Gt) per year, and the high atmospheric concentrations are detrimental to the environment. In spite of efforts to decrease emissions by sequestration (carbon capture and storage) and repurposing (use in fine chemicals synthesis and oil extraction), more than 98% of CO2 generated is released to the atmosphere. With emissions expected to increase, transforming CO2 to chemicals of high demand could be an alternative to decrease its atmospheric concentration. Transportation fuels represent 26% of the global energy consumption, making it an ideal end produ
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10

Weinstein, Randy D. (Randy David) 1971. "Organic synthesis in suppercritical carbon dioxide." Thesis, Massachusetts Institute of Technology, 1998. http://hdl.handle.net/1721.1/9652.

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Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 1998.<br>Includes bibliographical references (leaves 185-201).<br>Many industrially important synthesis reactions are carried out in liquid solvents such as aromatic compounds, chlorinated hydrocarbons, and other organic liquids which pose environmental and health hazards either because of their toxicity or their persistence in the environment. Hence proper disposal of these solvents and the prevention of accidental releases or routine emissions cause serious difficulties and costs for the industries who use
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11

Guo, Jiawen, and 郭嘉雯. "Chiral spirodiphosphine dioxides organocatalysis and hydrogen transfer reduction." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2013. http://hdl.handle.net/10722/196023.

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Recently, during the past10 years, with the intensified attention paid to the environment and industrial development, there has been growing interest in organocatalysis. One important area of the organocatalysis is the development of new designs of chiral catalysts for the synthesis of optically pure products. Another important area is to develop methods to simplify the purification of multi-component reactions. A chiral spirobiindane-based bisphosphine oxide catalyst was synthesized and employed in various reactions including Abramov-type phosphonylation reactions, reductive aldol reaction
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12

Clark, Peter David. "Synthesis of drug intermediates in carbon dioxide." Thesis, University of Nottingham, 2007. http://eprints.nottingham.ac.uk/11912/.

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The application of supercritical C0₂(scC0₂) as a solvent for the synthesis of fine and bulk chemicals has been well documented; however its application as a solvent for the synthesis of pharmaceuticals is yet to be exploited fully. To address this issue, two synthetically important reactions have been investigated in scC0₂; chemoselective N-debenzylation and diastereoselective hydrogenation. Chapter 3 details the study of catalytic N-debenzylation in the presence of sensitive functional groups (COMe and Cl). It has been shown that selective N-debenzylation in the presence of a carbonyl (COMe)
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13

Yiran, Li. "Black Titanium Dioxide: Synthesis, Characterization and Applications." Thesis, Université d'Ottawa / University of Ottawa, 2021. http://hdl.handle.net/10393/42653.

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The exploration and application of nanomaterials have been attracting researchers’ attention in recent decades. Nanocatalysts, as one of the very important classes of nanomaterials, have been developed for several generations. Nanotechnology makes light be possibly utilized in catalysis rather than only heat and allows multifunctional parts to be assembled in one catalyst. The TiO2 (as the representative of hetero-photocatalyst) and iron-based magnetic catalysts (as multifunctional catalyst) will be discussed in detail in this thesis. The first chapter will introduce the background of catalys
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14

Peña, Carrodeguas Leticia. "Synthesis of Biobased Polymers derived from Terpenes." Doctoral thesis, Universitat Rovira i Virgili, 2017. http://hdl.handle.net/10803/454747.

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Complexos aminotrifenolats d'Al (III) i Fe (III) combinats amb un nucleòfil han estat investigats com a catalitzadors binaris en la reacció de ROCOP per a l'obtenció de polímers bio-renovables perfectament alternats. S'ha estudiat l'acoblament d'òxid de limonè i diòxid de carboni per a l'obtenció de policarbonats alternats. Aquest sistema catalític va ser capaç de produir polímers trans estereoregulares a partir del cis-òxid de limonè . El catalitzador d'Al (III) mostra potencial per transformar tots dos isòmers de l'òxid de limonè, amb nivells de conversió alts, sense necessitat d'usar dissol
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15

Buthelezi, Motlalepula Isaac. "Synthesis and properties of nanoparticulate titanium dioxide compounds." Thesis, University of the Western Cape, 2009. http://etd.uwc.ac.za/index.php?module=etd&action=viewtitle&id=gen8Srv25Nme4_9038_1298632656.

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<p>An electrolytic cell was designed and constructed for the preparation of TiO2 nanotubes. Conditions of anodic oxidation were established to reproducibly prepare TiO2 nanotubes of average length 35-50 &mu<br>m vertically orientated relative to the plain of a pure titanium metal sheet. A non-aqueous solution of ethylene glycol containing small percentage of ammonium fluoride was used as the electrolyte with an applied voltage of 60 V. The morphology and dimensions of the nanotube arrays were studied by scanning (SEM) and transmission (TEM) electron microscopy. The effect of calcination under
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16

Perry, Derek. "Fischer-Tropsch synthesis in supercritical phase carbon dioxide /." Available to subscribers only, 2009. http://proquest.umi.com/pqdweb?did=1966544141&sid=1&Fmt=2&clientId=1509&RQT=309&VName=PQD.

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17

Gan, Wee Yong Chemical Sciences &amp Engineering Faculty of Engineering UNSW. "Synthesis and characterization of titanium dioxide thin films." Publisher:University of New South Wales. Chemical Sciences & Engineering, 2009. http://handle.unsw.edu.au/1959.4/43310.

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In this thesis, titanium dioxide (TiO2)-based thin film photocatalysts of different morphologies were synthesized and studied for their photoelectrocatalytic and photocatalytic properties. The superhydrophilicity of selected TiO2 films were also assessed. The work started with the synthesis of nanocrystalline TiO2 thin films with minimal porosity. A photoelectrocatalytic study was performed to evaluate the films?? photocurrent response in the presence of various organic compounds. At low concentrations, the amount of photocurrent generated was found to be influenced by the molecular structure
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18

Qiu, Shipeng. "SYNTHESIS, PROCESSING AND CHARACTERIZATION OF NANOCRYSTALLINE TITANIUM DIOXIDE." Master's thesis, University of Central Florida, 2006. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/3591.

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Titanium dioxide (TiO2), one of the basic ceramic materials, has found a variety of applications in industry and in our daily life. It has been shown that particle size reduction in this system, especially to nano regime, has the great potential to offer remarkable improvement in physical, mechanical, optical, biological and electrical properties. This thesis reports on the synthesis and characterization of the nanocrystalline TiO2 ceramic in details. The study selected a simple sol-gel synthesis process, which can be easily controlled and reproduced. Titanium tetraisopropoxide, isopropanol an
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19

West, Richard Henry. "Modelling the chloride process for titanium dioxide synthesis." Thesis, University of Cambridge, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.611241.

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20

Fan, Ka Ho. "Synthesis and evaluation of macroporous TiO2 composite photocatalyst /." View abstract or full-text, 2006. http://library.ust.hk/cgi/db/thesis.pl?CENG%202006%20FAN.

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21

Portolés, Gil Núria. "Green synthesis of coordination polymers using supercritical carbon dioxide." Doctoral thesis, Universitat Autònoma de Barcelona, 2019. http://hdl.handle.net/10803/669382.

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Recentment l’interès per la investigació en polímers de coordinació (CPs) i en xarxes metal·lorgàniques (MOFs) ha crescut degut al potencial d’aquests materials per nombroses aplicacions com per exemple, l’alliberació controlada de fàrmacs, la catàlisi i l’emmagatzematge i la separació de gasos. Generalment aquests materials són sintetitzats utilitzant dissolvents orgànics tòxics i altes temperatures. Per aquest motiu, és necessari desenvolupar rutes sintètiques més sostenibles per accelerar l'expansió industrial d'aquests productes. L’objectiu principal del treball és sintetitzar CPs utilitza
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22

Apps, James Frederick Shuan-Liang. "Synthesis and application of thiourea-S,S-dioxide derivatives." Thesis, University of Warwick, 2008. http://wrap.warwick.ac.uk/53126/.

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The structure and synthesis of N,N'-disubstituted thiourea-S,S-dioxides were investigated experimentally and computationally. Hydrogen peroxide oxidation of acyclic and cyclic N,N'-dialkylthioureas furnished S,S-dioxides in agreement with computational predictions. Some s,S,S-trioxides were also isolated. An X-ray crystallographic study of N,N'-diisopropylthiourea dioxide, fIrst synthesised in this work, verilled computational models. The prediction of a stable N,N'-diarylthiourea dioxide derivative was supported by successful isolation of the dioxide. The application of N,N'-diisopropylthiour
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23

Al-Nawar, Karim François. "Synthesis of novel benzothiazine and benzodiazepine-1,1-dioxide derivatives." Thesis, University of Hertfordshire, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.431933.

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24

Stamp, Louise Michelle. "Alkene synthesis and polycarbonate formation in supercritical carbon dioxide." Thesis, University of Cambridge, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.619690.

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25

Alauhdin, Mohammad. "Synthesis of nanostructured block copolymer in supercritical carbon dioxide." Thesis, University of Nottingham, 2017. http://eprints.nottingham.ac.uk/45562/.

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This thesis aims to expand our knowledge of block copolymer synthesis, particularly in supercritical CO2 (scCO2) and to study the microphase separation behaviour occurring within block copolymer microparticles during the synthesis. For these purposes, a new synthesis strategy was proposed and a high pressure X-ray autoclave was built and tested to facilitate the in situ microphase separation investigation by X-ray scattering. The success of this project has significantly broaden our understanding of the block copolymer synthesis and its phase separation mechanism in scCO2 dispersion, which are
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26

Phung, Chau V. "The Synthesis of Oxazolidinones from Aziridines and Carbon Dioxide." University of Cincinnati / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1470741529.

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27

Pitard, Arnaud. "1-azetines, 1,2-thiazetin-1,1-dioxides and isothiazol-1,1-dioxides as building blocks in heterocyclic synthesis : the attempted synthesis of bicyclic β-sultams". Thesis, University of Huddersfield, 2009. http://eprints.hud.ac.uk/id/eprint/7061/.

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This thesis is concerned with the synthesis of β-sultams and the development of new routes for the synthesis of bicyclic versions of these molecules as potential anti-bacterials. The synthesis of 1-azetines, 1,2-thiazetin-1,1-dioxides and isothiazol-1,1-dioxides as precursors of bicyclic heterocycles is described. 1-Azetines were synthesised from azetidin-2-ones prepared via the [2+2] cycloaddition of alkenes with N-chlorosulfonyl isocyanate (CSI). They reacted with diphenylcyclopropenone or nitrile oxides to afford bicyclic systems whose reactivity was explored and afforded a range of heteroc
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Shirley, Raphael Alexander. "Theoretical insights into the combustion synthesis of titanium dioxide nanoparticles." Thesis, University of Cambridge, 2011. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.609575.

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29

Nixon, Emily Cummings. "Silanes in sustainable synthesis: applications in polymer grafting, carbon dioxide capture, and gold nanoparticle synthesis." Diss., Georgia Institute of Technology, 2012. http://hdl.handle.net/1853/45847.

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Vinyltrialkoxysilanes are grafted onto polyolefins via a radical mechanism; in a subsequent step, the pendant alkoxysilanes hydrolyze and condense upon exposure to water, resulting formation of crosslinks. Straight chain hydrocarbons were used as model compounds to investigate the regioselectivity of vinyltrimethoxysilane grafting. To stabilize the water-sensitive grafted products, the methoxy groups were substituted using phenyllithium. It was found that this reaction must be carried out for a minimum of three days to ensure full substitution. The grafted products were then separated on a wei
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Carron, David. "FISCHER-TROPSCH SYNTHESIS IN SUPERCRITICAL PHASE CARBON DIOXIDE: DEACTIVATION STUDIES." OpenSIUC, 2011. https://opensiuc.lib.siu.edu/theses/643.

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ABSTRACT This thesis presents the results of investigations regarding the effect of supercritical CO2 on the long term activity, life and deactivation rates of an Fe-Zn-K catalyst during Fischer Tropsch Synthesis from syngas (H2:CO =1:1) typically produced from coal gasification. Previous studies at SIUC on FTS in Supercritical CO2 (SC-CO2) have shown that CH4 selectivity was inhibited and with the presence of excess CO2, the WGS reaction was reversed. This increased the carbon economy as result of the reduction in parasitic loss of CO to CO2. In addition, it was observed that the conversion
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31

Myre, Denis. "Synthesis of Carbon Dioxide Hydrates in a Slurry Bubble Column." Thesis, Université d'Ottawa / University of Ottawa, 2011. http://hdl.handle.net/10393/19789.

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Carbon dioxide hydrates were synthesized in a 0.10m I.D. and 1.22m tall bubble column equipped with a cooling jacket for heat removal. Visual observations at different driving forces (pressures between 2.75 and 3.60 MPa and temperatures between 0 and 8ºC) were recorded with a digital camera through a sight glass of 118.8 by 15.6 mm. The superficial gas velocity was varied from 20 to 50 mm/s to attain different levels of turbulence in the liquid. The growth rate was found to be dependent on the sequence/method used to reach the operating temperature and pressure. A greater supersaturation was o
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Bhave, Radhika. "Synthesis and photocatalysis study of brookite phase titanium dioxide nanoparticles." Connect to this title online, 2007. http://etd.lib.clemson.edu/documents/1181250716/.

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33

Morrish, Rachel Marie. "Synthesis of Nanostructured Materials by Etching in Supercritical Carbon Dioxide." Diss., The University of Arizona, 2009. http://hdl.handle.net/10150/194127.

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Supercritical CO₂ (scCO₂) is emerging as a viable and environmentally sustainable platform for nanomaterials synthesis due to its tunable solvent properties combined with low surface tension and viscosity, which allow rapid, non-destructive wetting within small features. However, to advance the utility of this fluid, a more thorough understanding of surface chemistry at high pressures is needed. In this study, the behavior of reactive solids in scCO₂ was examined by etching thin dielectric, metal, and alloy films to determine the fundamental mechanisms controlling the reactions. Models were de
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34

Ruzicka, Jan-Yves. "Synthesis of titanium dioxide nanoparticles: phase, morphology and size control." Thesis, University of Canterbury. Department of Chemistry, 2013. http://hdl.handle.net/10092/9052.

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Titanium dioxide is a well-studied and popular photocatalyst, but a number of factors still prevent its widespread use in a number of commercial applications. In this thesis we explored the synthesis of titanium dioxide nanoparticles via the sol-gel method, with the goal of creating a viable catalyst for the visible-light degradation of wastewater dyes. A number of different synthetic pathways were explored and developed, and the products categorised with respect to nanoparticle size, shape and crystallinity as well as electronic and photocatalytic properties.
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Neill, Colin Gardner. "Synthesis of pyridothiadiazine dioxides as potential potassium ion channel openers." Thesis, Heriot-Watt University, 1995. http://hdl.handle.net/10399/1347.

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36

Bratt, Mark. "The synthesis of carbonates and related compounds from carbon dioxide." Thesis, University of Warwick, 2001. http://wrap.warwick.ac.uk/62120/.

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The manufacture of carbonates and carbamates is essential due to their wide range of applications from polymers in foams, elastomers and engineering plastics to agrochemicals. Since there is a high demand for both types of compound, there is a commercial justification for use of phosgene in their synthesis. However, phosgene is highly toxic in small quantities. The development of an alternative reagent is therefore most desirable. This thesis relates our attempts to overcome the problem of phosgene use by utilising C02. Chapter One highlights previous research concerning the synthesis of carbo
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Parratt, Andrew John. "Supercritical carbon dioxide : a benign solvent for synthesis and purification." Thesis, University of Leeds, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.426823.

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Mahajan, Vishal Khomdeo. "Ordered titanium dioxide nanotubular arrays synthesis, characterization and photoelectrochemical behavior /." abstract and full text PDF (UNR users only), 2008. http://0-gateway.proquest.com.innopac.library.unr.edu/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:3316382.

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Morrison, Jennie. "Carbon dioxide sequestration into novel, useful materials : synthesis and properties." Thesis, University of Aberdeen, 2016. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=230160.

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Lee, Jin Kyun. "Heck reaction and diaryl ether synthesis in supercritical carbon dioxide." Thesis, University of Cambridge, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.615277.

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Soti, Madhav. "Fischer - Tropsch Synthesis in Supercritical phase Carbon Dioxide: Recycle Rates." OpenSIUC, 2014. https://opensiuc.lib.siu.edu/theses/1410.

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With increasing oil prices and attention towards the reduction of anthropogenic CO2, the use of supercritical carbon dioxide for Fischer Tropsch Synthesis (FTS) is showing promise in fulfilling the demand of clean liquid fuels. The evidence of consumption of carbon dioxide means that it need not to be removed from the syngas feed to the Fischer Tropsch reactor after the gasification process. Over the last five years, research at SIUC have shown that FTS in supercritical CO2 reduces the selectivities for methane, enhances conversion, reduces the net CO2 produces in the coal to liquid fuels proc
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Regonini, Domenico. "Anodised TiO2 nanotubes : synthesis, growth mechanism and thermal stability." Thesis, University of Bath, 2008. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.492286.

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Anodised titanium dioxide (titania, TiO2) nanotubes have been widely studied over the last few years, following the discovery in 1999 of nanoporous TiO2 films prepared via anodisation in aqueous solution containing small quantities of hydrofluoric acid. The synthesis of nanotubular titania by anodisation, a relatively simple and low cost technique, represents a motivation for scientists, considering the impact that such a material could have on a variety of applications, including gas-sensing, biomedical, photocatalysis, and photovoltaics. This research project has focused on the optimisation
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Deeming, Alex. "Applications of DABSO for the delivery of sulfur dioxide in organic synthesis." Thesis, University of Oxford, 2015. http://ora.ox.ac.uk/objects/uuid:ae0a6c5c-57a1-48bc-b219-ad22678d51ca.

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This thesis documents the development of novel synthetic methodologies for the incorporation of sulfur dioxide into organic molecules employing the amine-sulfur dioxide complex DABSO (vide infra). These developed processes serve to access a range of sulfonyl-containing (-SO<sub>2</sub>-) compounds including sulfones and sulfonamides, via sulfinic acid precursors. <b>Chapter 1</b> provides an overview of the synthesis and applications of sulfonyl-containing compounds and the organic chemistry of sulfur dioxide. A comprehensive introduction to the developed uses of sulfur dioxide surrogates in o
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Veach, Darren R. "SYNTHESIS AND EVALUATION OF 2,2-DIARYL-2,3-DIHYDROPHENANTHRO-[9,10-b]-1,4-DIOXIN PHOTONUCLEASES." University of Cincinnati / OhioLINK, 2001. http://rave.ohiolink.edu/etdc/view?acc_num=ucin991653071.

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45

Chen, Qianqian. "Synthesis of Photocatalytic Titanium Dioxide and Nitrogen Doped Titanium Dioxide Coatings Using an Atmospheric Dielectric Barrier Discharge." Doctoral thesis, Universite Libre de Bruxelles, 2018. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/276815.

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In this thesis, we focused on understanding the synthesis of titanium dioxide (TiO2) films and nitrogen doped TiO2 films using an atmospheric pressure Dielectric Barrier Discharge (DBD). The first part of the work was dedicated to the deposition of TiO2 films by cold plasma DBD with titanium tetraisopropoxide as precursor in a single-step process at room temperature. The deposition rate was about 70 nm·min-1. The photocatalytic degradation rate for the degradation of methylene blue (MB) under ultra violet (UV) irradiation of the TiO2 film after annealing was close to a reference anatase TiO2 s
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Renslo, Adam Robert 1971. "I. New cycloadditions for the synthesis of nitrogen heterocycles; and, II. Organic synthesis in supercritical carbon dioxide." Thesis, Massachusetts Institute of Technology, 1998. http://hdl.handle.net/1721.1/47485.

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47

Cadman, Christopher. "Titanium dioxide nanoparticles for photodynamic therapy." Thesis, University of Manchester, 2013. https://www.research.manchester.ac.uk/portal/en/theses/titanium-dioxide-nanoparticles-for-photodynamic-therapy(91717f00-c70e-4f07-8921-64caa9290b42).html.

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In the present thesis we propose the development of hybrid polymer titanium dioxide (TiO2) nanoparticles for use in biomedical applications. TiO2 exhibits high biocompatibility in the dark however, upon illumination in aqueous media with near UV light it produces an array of reactive oxygen species (ROS) which have the capability to induce death in neighbouring cells. The process of inducing cell death using a photosensitive material which produces ROS is known as photodynamic therapy (PDT) and is used to treat a wide range of maladies from psoriasis to cancer.We have demonstrated the ability
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48

Thurecht, Kristofer J. "Synthesis and characterisation of polymers using supercritical carbon dioxide and NMR /." [St. Lucia, Qld.], 2005. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe18753.pdf.

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49

Rehan, Mohammad. "In situ hydrothermal synthesis and process characterization of titanium dioxide nanoparticles." Thesis, University of Leeds, 2011. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.582157.

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Abstract:
Hydrothermal synthesis of titanium dioxide (Ti02) nanoparticles has been studied in situ using synchrotron radiation energy dispersive X-ray diffraction (EDXRD) together with other analytical techniques. The main objective of this research study was to investigate the reaction kinetics and mechanisms of Ti02 crystallization under hydrothermal conditions. The nanoparticles have been produced from hydrothermal treatments of acid (HN03) and alkaline (tetrabutylammonium hydroxide; TBA) peptized sol-gels of different compositions at various temperatures, pressures and time durations. The in situ ED
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50

Li, Haitao. "Synthesis of Titanium Dioxide Photocatalyst with the Aid of Supercritical Fluids." Scholar Commons, 2013. http://scholarcommons.usf.edu/etd/4912.

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Abstract:
Titanium Dioxide (TiO2) emerged as one of the most popular photocatalysts since 1970's. However, its photocatalytic activity requires UV irradiation due to its large band gap unless further functionalization or modifications are performed. Furthermore, recovery issue has always been a major drawback, if the more effective form nano particles are utilized. The key objectives of this research were synthesizing new TiO2 based photocatalyst systems that are effective with both the UV and the visible light while utilizing novel superior environmentally friendly techniques enabling development of na
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