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Thèses sur le sujet « Titanium-doping »

Auteur : Grafiati

Publié le 9 mars 2023

Mis à jour le 31 juillet 2025

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1

McCavish, N. D. "Non-stoichiometric titanium dioxide; ultra-thin film growth, doping and adsorption of metalorganics." Thesis, University of Reading, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.485371.

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Buzby, Scott Edward. "The effect of doping titanium dioxide nanoparticles on phase transformation, photocatalytic activity and anti-bacterial properties." Access to citation, abstract and download form provided by ProQuest Information and Learning Company; downloadable PDF file, 120 p, 2008. http://proquest.umi.com/pqdweb?did=1459918071&sid=9&Fmt=2&clientId=8331&RQT=309&VName=PQD.

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3

Yue, Junpei [Verfasser]. "Titanium-based anode materials for lithium ion batteries: crystallite size, porous structure and doping effects / Junpei Yue." Gießen : Universitätsbibliothek, 2016. http://d-nb.info/1111425914/34.

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4

Sun, Qingbo. "Defect Design, Chemical Synthesis and Associated Properties of Multifunctional TiO2-Based Nanocrystals." Phd thesis, Canberra, ACT : The Australian National University, 2017. http://hdl.handle.net/1885/139617.

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Local defect structures are significant to determine material properties since defects introduced into host materials would affect the local/average crystal environments and thus lead to a change of macroscopic physicochemical performances. The intentional design of specific local defects not only depends on the selected synthesis method and preparation process but also relies on the selected dopant or co-dopant ions. A deep understanding of the intrinsic relationships between local defect structures, chemical synthesis and associated properties is

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5

Kumar, Sachin. "Gas Phase Oxidation of Dimethyl Sulfide by Titanium Dioxide Based Catalysts." Miami University / OhioLINK, 2004. http://rave.ohiolink.edu/etdc/view?acc_num=miami1081780904.

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6

GALLINO, FEDERICO. "A combined computational and experimental study of spectroscopic evidences by dopants and defects in semiconducting and insulating oxides." Doctoral thesis, Università degli Studi di Milano-Bicocca, 2012. http://hdl.handle.net/10281/28403.

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The main objective and the major value of this work is to provide a combined setup of theoretical and experimental techniques to simulate and measure a number of properties altered and/or induced by defects in three representative and technologically relevant oxides: zinc oxide (ZnO), zirconium dioxide (ZrO2) and magnesium oxide (MgO). Zinc oxide and zirconium dioxide are wide-gap semiconductors with a vast set of technological applications generally related to the inclusion of defects and impurities and spanning from optoelectronics to spintronics devices and photocatalysis. They are the su

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Steiner, James David. "Understanding and Controlling the Degradation of Nickel-rich Lithium-ion Layered Cathodes." Thesis, Virginia Tech, 2018. http://hdl.handle.net/10919/85281.

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Consumers across the world use lithium-ion batteries in some fashion in their everyday life. The growing demand for energy has led to batteries dying quicker than consumers want. Thus, there are calls for researchers to develop batteries that are longer lasting. However, the initial increase in battery life over the years has been from better engineering and not necessarily from making a better material for a battery. This thesis focuses on the understanding of the chemistry of the materials of a battery. Throughout the chapters, the research delves into the how and why materials with e

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8

Gönüllü, Yakup [Verfasser]. "Functionalization of titanium dioxide nanotubes by various doping methods to use as selective gas sensing and energy storage applications / Yakup Gönüllü." München : Verlag Dr. Hut, 2013. http://d-nb.info/1037287150/34.

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9

Tokmakci, Tolga. "Preparation Of Boron-zirconium Co-doped Photocatalytic Titanium Dioxide Powder." Master's thesis, METU, 2013. http://etd.lib.metu.edu.tr/upload/12615401/index.pdf.

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A titanium dioxide powder co-doped with boron and zirconium was prepared by mechanical ball milling. Photocatalytic performance of the powder was evaluated by degradation of methylene blue (MB) solution under UV illumination. XRD patterns were refined by Rietveld analysis method to obtain accurate lattice parameters and position of the atoms in the crystal structure of TiO2. XRD analysis indicated that the B and/or Zr doped TiO2 powders composed of anatase and did not exhibit any additional phase. Rietveld analysis suggested that dopant B and Zr elements were successfully weaved into crystal s

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10

Duncan, Morris. "Surface and sensor studies of doped titanium dioxide." Thesis, University of Oxford, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.365772.

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11

Semlali, Sanaa. "Films mesoporeux photocatalytiques de tio2 non dope et dope par differents metaux : elaboration, caracterisation et etude des proprietes photocatalytiques." Thesis, Pau, 2013. http://www.theses.fr/2013PAUU3041/document.

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L’objet de cette thèse est le développement et l’étude de la photoréactivité de TiO2, absorbant dans le visible et ayant des propriétés autonettoyantes et de dépollution de l’eau et de l‘air. Dans ce contexte, des films d’épaisseur controlée et mésostructurés de TiO2 non dopés et dopés par différents métaux (platine, vanadium et tungstène) , ont été synthétisés par voie sol-gel combinée au procédé d'auto-assemblage induit par évaporation. Les propriétés structurales et optiques ainsi que la composition chimique de la surface des films ont été caractérisées par de nombreuses techniques de carac

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12

Cornelius, Steffen. "Charge transport limits and electrical dopant activation in transparent conductive (Al,Ga):ZnO and Nb:TiO2 thin films prepared by reactive magnetron sputtering." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2014. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-156145.

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Transparent conductive oxides (TCOs) are key functional materials in existing and future electro-optical devices in the fields of energy efficiency, energy generation and information technology. The main application of TCOs is as thin films transparent electrodes where a combination of maximum electrical conductivity and transmittance in the visible to nearinfrared spectral range is required. However, due to the interdependence of the optical properties and the free electron density and mobility, respectively, these requirements cannot be achieved simultaneously in degenerately doped wide band

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13

Youssef, Laurène. "Développement par procédé plasma de couches minces de type TiO2 dopé à l'azote pour la production d'hydrogène par photo-électrolyse de l'eau sous lumière solaire." Thesis, Montpellier, 2018. http://www.theses.fr/2018MONTS133/document.

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Le couplage direct de la séparation et de la photo-catalyse en utilisant des membranes à base de dioxyde de titane, est une approche intéressante habituellement appliquée dans les dispositifs de traitement de l'eau, et récemment envisagée pour d’autres applications, telle que la production d’hydrogène par photo-électrolyse de l’eau. En effet, le dioxyde de titane (TiO2) est bien connu pour ses propriétés photo-catalytiques. En outre, s’il est immobilisé sur support membranaire plutôt qu’utilisé en suspension, son intégration en procédé de séparation est facilitée, sans compter les gains apport

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Karlsson, Rasmus. "Theoretical and Experimental Studies of Electrode and Electrolyte Processes in Industrial Electrosynthesis." Doctoral thesis, KTH, Tillämpad elektrokemi, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-177025.

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Heterogeneous electrocatalysis is the usage of solid materials to decrease the amount of energy needed to produce chemicals using electricity. It is of core importance for modern life, as it enables production of chemicals, such as chlorine gas and sodium chlorate, needed for e.g. materials and pharmaceuticals production. Furthermore, as the need to make a transition to usage of renewable energy sources is growing, the importance for electrocatalysis used for electrolytic production of clean fuels, such as hydrogen, is rising. In this thesis, work aimed at understanding and improving electroca

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15

Sengele, Armelle. "Décontamination et dépollution par photocatalyse : réalisation d'un dispositif d'élimination d'agents chimiques toxiques et de polluants dans l'air et dans l'eau." Thesis, Strasbourg, 2015. http://www.theses.fr/2015STRAF066/document.

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Ce travail de thèse consiste à synthétiser des nanoparticules de dioxyde de titane pour la décontamination d’agents chimiques par photocatalyse. L’objectif principal est d’optimiser le photocatalyseur pour la dégradation du sulfure de diéthyle (DES), simulant de l’ypérite. L’oxydation du DES produit des sulfates qui empoisonne le TiO2. Le but est donc de limiter cette désactivation ainsi que le rejet de molécules toxiques. Une solution est d’augmenter la surface spécifique par deux méthodes : le dopage du TiO2 au tantale ou à l’étain et l’ajout d’un porogène lors de la synthèse par voie sol-ge

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16

Borges, Karen Araújo. "Síntese, otimização e caracterização da atividade fotocatalítica de TIO2 dopado com nitrogênio." Universidade Federal de Uberlândia, 2015. https://repositorio.ufu.br/handle/123456789/17525.

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>The optimization of the synthetic route of titanium dioxide nanoparticles doped with nitrogen was carried out in order to obtain photocatalysts with improved photocatalytic activity. Thereby, from the synthesized photocatalysts was possible to reach about 100% discoloration and 64% mineralization of Ponceau 4R (P4R) dye. Both doped (with largest and smallest photocatalyitc activity) and undoped catalysts were analyzed by X-ray diffraction showing the predominance of the crystalline anatase phase. Besides, using the Rietveld method,

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17

Wang, Junwei. "Chemical doping of metal oxide nanomaterials and characterization of their physical-chemical properties." Case Western Reserve University School of Graduate Studies / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=case1333829935.

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18

Risal, Laura-Line. "Production d’Hydrogène par Photo-Catalyse de TiO2." Electronic Thesis or Diss., Institut polytechnique de Paris, 2022. http://www.theses.fr/2022IPPAE021.

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Afin de palier à l’intermittence des énergies renouvelables, l’utilisation d’un vecteur énergétique tel que l’hydrogène semble une solution idéale. Il permet de stocker massivement de l’énergie sur une longue période de temps, convient à une large gamme d’utilisation (mobilité, chaleur, procédés) et son impact carbone est très intéressant selon sa production. Cette source d’énergie apparait donc comme une bonne alternative aux énergies fossiles dont nous sommes très dépendants. Cependant, 95 % de l’hydrogène est actuellement produit par la technique de vaporeformage du gaz naturel qui conduit

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19

Ratova, Marina. "Enhanced properties of photocatalytic titania thin films via doping during magnetron sputter deposition." Thesis, Manchester Metropolitan University, 2013. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.603487.

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20

Kašpárek, Vít. "Syntéza a vlastnosti keramických nanočásticových materiálů na bázi aniontově dopovaných kompozitních oxidů titanu." Master's thesis, Vysoké učení technické v Brně. Fakulta chemická, 2013. http://www.nusl.cz/ntk/nusl-216925.

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Master’s thesis deals with synthesis of anatase and its anion doping by carbo-nitridation. Prepared samples were used for testing of the photocatalytic activity. Low-temperature anatase was synthesized at 80 °C for 6 hours and carbo-nitridatation was carried out in ammonia/tetrachloromethane atmosphere at 500 °C for 3 hours. The influence of silver content on low-temperature crystallization of anatase was studied by reaction of titanium tetraisopropoxide with water. Silver nanoparticles were prepared by reduction of silver nitrate by D-glukose and sodium citrate. One of the results is the draf

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21

Lin, Hong-Ying. "Improving the optoelectronic property and photoactivity of nano-structured titanuim dioxide effect of particle size, oxygen vacancy, and nitrogen doping /." Access to citation, abstract and download form provided by ProQuest Information and Learning Company; downloadable PDF file, 1581 p, 2008. http://proquest.umi.com/pqdweb?did=1609302401&sid=2&Fmt=2&clientId=8331&RQT=309&VName=PQD.

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Thesis (Ph.D.)--University of Delaware, 2008.<br>Principal faculty advisors: Chin-Pao Huang, Dept. of Civil and Environmental Engineering, and S. Ismat Shah, Dept. of Materials Science Includes bibliographical references.

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22

Gunti, Srikanth. "Enhanced Visible Light Photocatalytic Remediation of Organics in Water Using Zinc Oxide and Titanium Oxide Nanostructures." Scholar Commons, 2017. http://scholarcommons.usf.edu/etd/6852.

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The techniques mostly used to decontaminate air as well as water pollutants have drawbacks in terms of higher costs, require secondary treatment, and some methods are very slow. So, emphasis has been given to water though the use of photocatalysts, which break organic pollutants to water and carbon dioxide and leave no trace of by-products at the end. Photocatalytic remediation aligns with the waste and wastewater industries’ zero waste schemes with lower cost, eco-friendly and sustainable treatment technology. The commonly used photocatalysts such as titanium oxide (TiO2), zinc oxide (ZnO), t

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23

Rosell-Laclau, Eliette. "Addition d'éléments de transition dans les alliages Al-Ni précurseurs des catalyseurs de nickel de Ranay." Grenoble INPG, 1994. http://www.theses.fr/1994INPG0071.

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Cette etude concerne l'influence d'elements d'addition (titane, fer et chrome) dans les alliages precurseurs al-ni, des catalyseurs de nickel de raney. Deux aspects principaux ont ete developpes lors de ce travail. La premiere partie traite de l'effet du dopant sur la reactivite des phases al#3ni et al#3ni#2 vis-a-vis de l'extraction d'aluminium par attaque alcaline. L'attaque de al#3ni par propagation d'un front plan, a permis de mettre en evidence un processus d'attaque identique que ce soit sans dopant ou en presence de titane ou de chrome. Une energie d'activation de 60 kj/mol a ete determ

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24

Kwiatkowski, Maciej. "ZnO(core)/TiO2(shell) composites: influence of TiO2 microstructure, N-doping and decoration with Au nanoparticles on photocatalytic and photoelectrochemical activity." Doctoral thesis, Bourgogne Franche-Comté, 2017. https://depotuw.ceon.pl/handle/item/2244.

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Efficient use of renewable energies is one of the most difficult technological challenges facing humanity. Among all renewable energy sources, the sunlight is considered as the most abundant and accessible one. To convert it into usable and controllable form, the modern technology relies on generation of electron-hole pairs in semiconductors upon light absorption. The obtained separated charge carriers possess extra energy brought by the converted sunlight which can be further utilized in various ways. Currently, the most common approach consists in its direct transformation into electricity i

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Tchiffo, Tameko Cyril. "Croissance et propriétés de couches minces d’oxydes pour microsources d’énergie." Thesis, Orléans, 2016. http://www.theses.fr/2016ORLE2068/document.

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Cette thèse concerne la réalisation des films minces d’oxydes et l’étude de leurs propriétés physiques pour les cellules photovoltaïques (PV) et les modules thermoélectriques. Dans une première partie, les propriétés de l’oxyde de titane TiOx (1,45<br>This thesis concerns the realization of oxide thin films and the study of their properties for photovoltaic or thermoelectric devices. In the first part, the TiOx properties are studied for use as an optically active transparent conductive oxide to put in front of the PV cells or, as optical coupling layer to interpose between the metal reflector

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Ching, Chih-Wen, and 鄭智文. "CVD titanium dioxide and the doping effect of zirconium dioxide and MPECVD titanium carbide." Thesis, 1994. http://ndltd.ncl.edu.tw/handle/85670155368279667598.

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Li, Chia-hsin, and 李佳欣. "Surface Modification of Titanium Dioxide Powders by Ni Doping." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/24640174954603216846.

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碩士<br>逢甲大學<br>材料科學所<br>94<br>In the present study, titanium dioxide powders concluding sub-micron (denoted as M-TiO2), nanometer-sized (N-TiO2, STO1, and P-25), and nanotube (NT-TiO2), were modified by adsorbing nickel ions with impregnation process. Post heat treating at 500 oC for 4 hours under reductive hydrogen atmosphere was performed. Characteristics of the titanium dioxide powders before and after surface modification were investigated. The EDS results showed that only limited amount of nickel was adsorbed on the TiO2 surface. X-ray diffraction results showed that the relative rutile ph

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Fielitz, P., S. Ganschow, K. Kelm, and G. Borchardt. "Impact of titanium doping on Al self-diffusion in alumina." 2019. https://ul.qucosa.de/id/qucosa%3A38366.

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α-Al2O3 is an important refractory material which has numerous technical applications: as an in situ growing self-healing oxide scale, as a massive material and as reinforcement fibres in composites. For modelling diffusion controlled processes (creep, sintering, alpha-alumina scale growth on aluminium bearing Fe or Ni base alloys) it is necessary to study self-diffusion of the constituent elements.

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"Enhancement of photocatalytic activity by doping nitrogen and boron into titanium dioxide." 2006. http://library.cuhk.edu.hk/record=b5892982.

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Leung Cheuk-wan.<br>Thesis (M.Phil.)--Chinese University of Hong Kong, 2006.<br>Includes bibliographical references.<br>Abstracts in English and Chinese.<br>Abstract --- p.i<br>Abstract (Chinese) --- p.ii<br>Acknowledgement --- p.iii<br>Table of Contents --- p.v<br>Lists of Tables --- p.ix<br>Lists of Figures --- p.x<br>Chapter Chapter 1 --- Introduction --- p.1<br>Chapter 1.1 --- TiO2 Photocatalysis --- p.1<br>Chapter 1.1.1 --- Mechanisms of TiO2 Photocatalysis --- p.1<br>Chapter 1.2 --- Visible Light Photocatalyst --- p.4<br>Chapter 1.2.1 --- Preparation of Visible Light Ti02 Photo

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Hsu, Chin Yuan, and 許晉源. "Ion selectivity modulation by silicon dioxide doping in Titanium Nitride capacitive sensor." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/49676727372150015919.

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碩士<br>長庚大學<br>電子工程學系<br>102<br>The purpose of this research is to realize a novel method of potassium ion sensing membrane fabrication which is compatible with CMOS technology. Ion sensitivity platform is selected as Electrolyte Insulator Silicon (EIS) of Ion Sensitivity Field Effect Transistor (ISFET). In this research, Titanium Nitride, popularly applied to Semiconductor process, is used as the basic sensing membrane of EIS. In this research, adjusting different N2 ratio and different power of Si target in sputtering, sensitivity of sensing membrane could be improved. Besides, the surface ro

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Kuo, Szu-Yu, and 郭思妤. "Preparation of photocatalytic membrane by doping titanium dioxide with waste fluorescent powder of lanthanum." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/66385823656874325490.

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碩士<br>中原大學<br>生物環境工程研究所<br>104<br>In this study, the waste fluorescence powder used acid leaching to rare earth metal leach out and doped with titanium dioxide (TiO2). This reduced the TiO2 energy gap, making the light source can be changed to visible light from ultraviolet light, which can effectively reduce energy problem. Membrane treatment procedure for the widespread use of the current technology. Literature indicated by photocatalyst coating material was applied on the membrane hydrophilic, it could effectively improve performance and reduced the impact of fouling materials. In this stud

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Lin, S. W., and 林軒瑋. "Effects of Doping Elements on Photochemical Catalysis Properties of Titanium Dioxide from First Principles." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/71576737703609890585.

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碩士<br>明志科技大學<br>材料工程研究所<br>99<br>In this study, calculations of titanium dioxide doped with different elements of the electronic structure changes and formation energy with concentration from first principles. Density functional theory (DFT) in describing the band structure is quite successful for many systems, but no longer applicable for strongly correlated, in order to correct the description of localized electron orbitals, we use DFT + U (Hubbard U correction) method for computing the model structure. From the simulation show that N impurities introduce some energy levels above the top of

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Nubi, Olatunbosun Owolabi. "Single and double doping of nanostructured titanium dioxide with silver and copper : structural, optical and gas-sensing properties." Thesis, 2016. http://hdl.handle.net/10386/1749.

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Thesis (Ph. D. (Physics)) -- University of Limpopo, 2016.<br>Single and double doped nanometric powders of Single and double doped nanometric powders of titanium dioxide (TiO2) were synthesised by the sol-gel process using titanium isopropoxide (TTIP) as the precursor. For comparison, an undoped sample was also prepared. The metal dopants, Ag and Cu, were used at doping levels of 5% molar weight. The samples were dried at 100°C in air and post annealing was done at 300°C, 600°C, 900°C and 1100°C. Structural characterisation of the samples was carried out by X-ray Diffraction (XRD), Raman Spe

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HUANG, PO-HAO, and 黃柏豪. "Study of Metal Oxide Semiconductor Field Effect Humidity Sensing Device Using Titanium Dioxide Sensing Film with Nitrogen Doping." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/3f56bh.

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碩士<br>國立高雄海洋科技大學<br>微電子工程研究所<br>102<br>The TiO2:N2 relative humidity sensing devices were accomplished in accordance with semiconductor structures. The optimum growth parameter of TiO2:N2 sensing film was decided to fabricate the well-defined relative humidity sensor. In this study, the optimum growth temperature of TiO2:N2 sensing film is at 27oC with well properties in the surface morphology, crystallization, and electronic transportation. By the Hall effect measurement, the TiO2:N2 sensing film is revealed the n-type in carrier type. The carrier concentration and mobility of TiO2:N2 sensing

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Fan, Shan-Wei, and 范珊瑋. "Effect of Titanium Doping on the Characteristics of Temperature Coefficient of Resistance of Multi-phase Vanadium Oxide Thin Films." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/98521409696142355871.

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碩士<br>國立清華大學<br>材料科學工程學系<br>94<br>Vanadium oxides compound (V2O3, V2O5, and VO2, etc.) is a well known thermal-sensitive material, undergoing a phase transition from a low temperature, semiconducting state to a high temperature, metallic state. This change is accompanied by an abrupt resistivity modification near room temperature, made vanadium oxide a candidate material for bolometric sensors application. In this application, the bolometer sensitivity is directly related to the temperature coefficient of resistance (TCR), defined as the slope of log resistivity. To produce a highly sensitive

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Sheppard, Leigh Russell Materials Science &amp Engineering Faculty of Science UNSW. "Defect chemistry and charge transport in niobium-doped titanium dioxide." 2007. http://handle.unsw.edu.au/1959.4/40542.

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The present project has made a comprehensive assessment of the effect of Nb doping on various charge-transfer related properties of TiO2. Of particular focus, the electrical properties of Nb-doped TiO2 (0.65 at %) have been investigated using the simultaneous measurement of electrical conductivity and thermoelectric power. This investigation was undertaken at elevated temperatures (1073 K -- 1298 K) in equilibrium with a gas phase of controlled oxygen activity (10-10 Pa < p(O2) < 75 kPa). In addition, the effect of segregation on the surface versus bulk composition of Nb-doped TiO2 was also in

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Chen, Wei-Hong, and 陳韋宏. "Hydrothermal synthesis of titanium dioxide for the light scattering layer and Electrolyte doping with Graphene Oxide of dye-sensitized solar cells." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/rfgnnw.

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碩士<br>國立東華大學<br>材料科學與工程學系<br>106<br>In this study, by using hydrothermal method to synthesis titanium dioxide aggregation. The particle size was about 300 nanometer to 1 micrometer to achieve high scattering effect, and the morphology was similar with hydrangea. By mixing hydrangea TiO2 and P25-TiO2, makes more fitting with scattering electrode and the working electrode, so that efficiency can be improved. 　　Graphene Oxide can reduce the recombination of electrons in the electrolyte, we used freeze-drying method to get porous graphene oxide, and added to electrolyte, so that pores make the ele

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Cornelius, Steffen. "Charge transport limits and electrical dopant activation in transparent conductive (Al,Ga):ZnO and Nb:TiO2 thin films prepared by reactive magnetron sputtering: Charge transport limits and electrical dopant activation in transparent conductive (Al,Ga):ZnO and Nb:TiO2 thin films prepared by reactive magnetron sputtering." Doctoral thesis, 2013. https://tud.qucosa.de/id/qucosa%3A28409.

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Transparent conductive oxides (TCOs) are key functional materials in existing and future electro-optical devices in the fields of energy efficiency, energy generation and information technology. The main application of TCOs is as thin films transparent electrodes where a combination of maximum electrical conductivity and transmittance in the visible to nearinfrared spectral range is required. However, due to the interdependence of the optical properties and the free electron density and mobility, respectively, these requirements cannot be achieved simultaneously in degenerately doped wide band

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KRAJČOVIČ, Jan. "Vytváření tenkých vrstev pro aplikace pokročilých oxidačních procesů s využitím kovových dopantů." Master's thesis, 2014. http://www.nusl.cz/ntk/nusl-170232.

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The aim of this diploma thesis is deposition of TiO2 thin films onto different types and sizes of substrates, and some of these layers dope by iron or silver. During the work was range of TiO2 layers created using a method of physical vapor deposition namely magnetron sputtering. For these processes was chosen the Dreva ARC 400 Hard Material Coating Plant device. The main aim of these depositions was to attempt to create TiO2 thin films on a substrates of larger surface than its in average laboratory processes usual. For this purpose were TiO2 layers deposited onto square glass plates of side

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Nemudzivhadi, Hulisani. "Computational study of low index surface of an anatase TiO2 doped with ruthenium (Ru) and strontium (sr) for application in Dye sensitized solar cells." Diss., 2019. http://hdl.handle.net/11602/1341.

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MSc (Physics)<br>Department of Physics<br>Titanium dioxide (TiO2) is considered to be an ideal semiconductor for photocatalysis because of its high stability, low cost and safety towards both humans and the environment. Doping TiO2 with different elements has attracted much attention as the most important way of enhancing the visible light absorption, in order to improve the efficiency of the dye sensitized solar cells (DSSCs). In this study, first principle density functional theory was used to investigate electronic and optical properties of bulk anatase TiO2, undoped, and ruthenium (Ru) and

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Guimarães, Sara Daniela Pimentel. "Fotodegradação de efluentes usando perovskites mistas de (Zn,Co)TiO3 dopadas com flúor." Master's thesis, 2017. http://hdl.handle.net/1822/59911.

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Dissertação de mestrado em Ciências e Tecnologias do Ambiente (área de especialização em Energia)<br>Processos de oxidação avançados (POA’s) têm demostrado ser um método efetivo para o tratamento de efluentes da indústria têxtil. Os POA’s oxidam as moléculas orgânicas, como corantes, utilizando radicais hidroxilo (OH•) gerados em reações de fotocatálise. O dióxido de titânio (TiO2) é o catalisador mais associado com este processo, mas apresenta a desvantagem de apenas ser ativado com radiação ultravioleta (UV). Para obter um catalisador funcional na zona do espectro visível utilizou-se antes o

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