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Dissertations / Theses on the topic 'Oxygen-based'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

Bondü, Christoph Johannes [Verfasser]. "Electrochemical Oxygen Reduction and Oxygen Evolution from DMSO Based Electrolytes / Christoph Johannes Bondü." Bonn : Universitäts- und Landesbibliothek Bonn, 2017. http://d-nb.info/114915442X/34.

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2

Dunne, Jacqueline. "Oxidative reactions of haemoglobin based oxygen carriers." Thesis, University of Essex, 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.272535.

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3

Matcham, Jeremy Stephen. "Ground based laboratory atomic oxygen calibration experiments." Thesis, University of Southampton, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.286766.

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4

White, Carl Barry. "Development of carbon-based atomic oxygen sensors." Thesis, University of Southampton, 2007. https://eprints.soton.ac.uk/342945/.

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This work focuses on the development of a hyperthermal, neutral atomic oxygen (AO) sensor that can be used on a wide variety of spacecraft platforms and in ground-based atomic oxygen environment simulators. Carbon has been identified as the sensitive medium for sensing the AO and one of the most important aspects of this work was selecting the most appropriate type of carbon for a particular AO dose. This work fabricates carbon films by physical vapour deposition (PVD) and screen-printing techniques to provide different thicknesses and erosion rates, which affect the sensitivity and life of th

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5

Xue, Ruipeng. "Nanofiber Based Optical Sensors for Oxygen Determination." The Ohio State University, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=osu1405508835.

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6

Harper, Ryan Nicholas. "Chemical looping combustion with copper-based oxygen carriers." Thesis, University of Cambridge, 2014. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.648573.

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7

Hu, Wenting. "Development and characterisation of a copper-based oxygen carrier for chemical-looping with oxygen uncoupling (CLOU)." Thesis, University of Cambridge, 2016. https://www.repository.cam.ac.uk/handle/1810/260245.

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In chemical-looping, a fuel is oxidised by a solid metal oxide, MeO, in one reactor: (2$n+m$)MeO+C$_{n}$H$_{2m}\rightarrow$(2$n+m$)Me+$m$H$_{2}$O+$n$CO$_{2}$. The exit gas yields pure CO$_{2}$ after the steam has been condensed. The reduced metal oxide, Me, is transferred to an oxidation reactor and regenerated: Me+air$\rightarrow$MeO. Adding these reactions, the fuel has been combusted, but the CO$_{2}$ has been separated from the nitrogen in air. In fact, it is in a suitable form for sequestration in the Earth where prevention of greenhouse gas emissions to the atmosphere is desired. General

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8

Mamtani, Kuldeep. "Carbon-based Materials for Oxygen Reduction Reaction (ORR) and Oxygen Evolution Reaction (OER) in Acidic Media." The Ohio State University, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=osu149376896628355.

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9

Anghel, Clara. "Modified oxygen and hydrogen transport in Zr-based oxides." Doctoral thesis, Stockholm, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-4095.

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10

Kotsantonis, Sotirios. "Oxygen transport in novel electrolyte materials based on Bi2O3." Thesis, Imperial College London, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.529367.

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11

Surendranath, Yogesh. "Oxygen evolution mediated by co-based thin film electrocatalysts." Thesis, Massachusetts Institute of Technology, 2011. http://hdl.handle.net/1721.1/65477.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemistry, 2011.<br>Cataloged from PDF version of thesis.<br>Includes bibliographical references.<br>The electrocatalytic conversion of water to O₂ is the key efficiency-determining reaction for the storage of electrical energy in the form of liquid fuels. In this thesis, the simple preparation of a cobalt-based catalyst for the oxygen evolution reaction (OER) is described and details of its structure, valency, mechanism of action, and mechanism of formation at intermediate pH are elaborated. The catalyst is obtained as an electr

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12

Okpoko, Egwono Kelvin. "Chemical-looping combustion : investigation of Cu-based oxygen carriers." Thesis, Imperial College London, 2012. http://hdl.handle.net/10044/1/11749.

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Chemical looping combustion (CLC) is a process developed to efficiently combust hydrocarbon fuels and at the same time capture CO2 without an additional energy intensive separation unit. CLC is a two-stage process which involves supplying oxygen to the fuel for combustion with an oxygen carrier and the same oxygen carrier is regenerated back to its original state with air in a subsequent reactor, prior to recycling. CLC is potentially economically and financially viable, and depending on the design, a variety of products can be obtained. Hydrogen and syngas are two very important products usef

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13

Song, Bjorn Kyungsuck. "Effects of Isovolemic Hemodilution on Tissue Oxygen Consumption Using a Hemoglobin-Based Oxygen Carrier and Human Serum Albumin." VCU Scholars Compass, 2007. http://scholarscompass.vcu.edu/etd_retro/33.

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This microcirculatory study compared the effects on oxygen transport of two hemodilution fluids: HBOC-201 (Biopure Corp., Cambridge, MA) a Hemoglobin-Based Oxygen Carrier (HBOC), and 5.9% Human Serum Albumin (HSA) an iso-oncotic non-oxygen carrying colloid solution. Measurements using intravital microscopy were made on the spinotrapezius muscle of male, Sprague-Dawley rats. Interstitial PO2 was measured using phosphorescence quenching microscopy, and recorded before and after isovolemic hemodilutions (HD) at hematocrits of 40% (baseline), 30% (moderate HD) and 15% (severe HD). Oxygen consumpti

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14

Ghosh, Debju. "Structurally integrated luminescence based oxygen sensors with Organic LED/ oxygen sensitive dye and PECVD grown thin film photodetectors." [Ames, Iowa : Iowa State University], 2008.

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15

Haider, Peter Sebastian. "Potential of gold-based catalysts for catalytic oxidation with oxygen /." Zürich : ETH, 2009. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=18223.

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16

Cui, Yaowen. "Preparation of Copper-Based Oxygen Carrier Supported on Titanium Dioxide." TopSCHOLAR®, 2012. http://digitalcommons.wku.edu/theses/1192.

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Chemical-looping combustion is an indirect oxygen combustion strategy, considered to be the most cost-effective power generation technology with the CO2 inherently concentrated. In this process, a solid oxygen carrier is used to transfer oxygen from the air reactor to the fuel reactor, which completely isolates nitrogen in air to meet with fuels. The oxygen carriers in the combustion process are subjected to the severe environments, such as high temperatures, multi-cycle operations, and thermodynamic limitations. Thus, the preparation of an oxygen carrier with high durability and better kineti

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17

Williams, Anna Rose. "Biogenic precious metal-based magnetic nanocatalyst for enhanced oxygen reduction." Thesis, University of Birmingham, 2016. http://etheses.bham.ac.uk//id/eprint/6666/.

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This work contributes to the development of electrocatalysts for use in polymer electrolyte fuel cells, specifically for the cathodic oxygen reduction reaction (ORR). To achieve this, electrochemical analysis was conducted using biofabricated platinum (bio-Pt) catalyst. Bio-Pt per se was found to be a poor catalyst for the ORR, attributed to the platinum being inaccessible to the reactants. Various ‘cleaning’ techniques were tested to partially remove biomass, providing improved catalytic activity.

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18

Ding, Rui. "Enhanced Singlet Oxygen Production from Metal Nanoparticle Based Hybrid Photosensitizers." University of Cincinnati / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1447690607.

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19

Stephens, Britton Bruce. "Field-based atmospheric oxygen measurements and the ocean carbon cycle /." Diss., Connect to a 24 p. preview or request complete full text in PDF format. Access restricted to UC campuses, 1999. http://wwwlib.umi.com/cr/ucsd/fullcit?p3035435.

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20

Ntwampe, Seteno Karabo Obed. "A perfluorocarbon-based oxygen delivery system to a membrane bioreactor." Thesis, [S.l. : s.n.], 2009. http://dk.cput.ac.za/cgi/viewcontent.cgi?article=1059&context=td_cput.

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21

Prapan, Ausanai [Verfasser]. "Fabrication and characterization of hemoglobin based oxygen carriers / Ausanai Prapan." Berlin : Medizinische Fakultät Charité - Universitätsmedizin Berlin, 2020. http://d-nb.info/1223927318/34.

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22

NGUYEN, MINH TOAN. "Iron-based electrocatalysts for oxygen reduction in microbial fuel cells." Doctoral thesis, Università degli Studi di Roma "Tor Vergata", 2014. http://hdl.handle.net/2108/214227.

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The increasing energy demand in the context of population explosion excites human efforts to explore more renewable power sources. Among various systems for sustainable energy producing, Microbial Fuel Cells (MFCs) are considered as a promising alternative to generate renewable energy, being an environmental biotechnology that turns the treatment of organic wastes into electricity. However, the high - and further increasing - cost of materials to build up devices, especially precious platinum catalyst at the cathode side, hinders MFCs being popular in the practical applications. This res

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23

Hollis, Peter Graham. "The overall oxygen transfer coefficient and interfacial area in hydrocarbon-based bioprocesses." Thesis, Stellenbosch : Stellenbosch University, 2015. http://hdl.handle.net/10019.1/96868.

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Thesis (MEng)--Stellenbosch University, 2015.<br>ENGLISH ABSTRACT: Bioconversion of hydrocarbons to value-added intermediates and products has significant industrial potential using both prokaryotic and eukaryotic organisms. In particular, alkanes can be converted to an expansive range of commercially important products using aerobic bioprocesses under mild process conditions. Coupled with the relative abundance of alkanes derived from gas to liquid (GTL) technologies, such as those employed by SASOL, South Africa, the commercial potential for bioconverison of alkanes is large. However, u

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24

Knipping, Etienne. "Design of new ionic liquid-based electrolytes for lithium-oxygen battery." Doctoral thesis, Universitat Autònoma de Barcelona, 2018. http://hdl.handle.net/10803/663959.

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Las baterías de litio-oxigeno (Li-O2 o litio-aire) son un campo de gran interés y reciente actualidad ya que su densidad energética es teóricamente similar a la de la gasolina. Esta tecnología es potencialmente una de las mejores soluciones para el diseño y la construcción de vehículos eléctricos. Sin embargo, esta nueva tecnología seguirá sujeta a investigación al menos durante los próximos 20 años, debido a su baja ciclabilidad, su eficiencia eléctrica limitada y la dificultad para montar una celda real, segura, y capaz de funcionar en condiciones atmosféricas tan bien como a escala de labor

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25

Huang, Xiubing. "Transition-metal based oxides for oxygen storage and energy-related applications." Thesis, University of St Andrews, 2015. http://hdl.handle.net/10023/6817.

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The development of energy storage and conversion techniques with high efficiency and power density is of great importance for the sustainable development of our green world. Li-O₂ batteries with high theoretical energy density has attracted extensive attention. However there are still many issues waiting to be solved, such as low stability of cathode catalyst, as well as the deactivation of cathode by H₂O and CO₂ from air. Reversible solid oxide fuel cells can be used for electricity production by SOFCs and fuel production (H₂ and O₂) by SOECs. Thus, oxygen storage materials can bridge Li-O₂ b

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26

Sarshar, Zahra. "Development of Novel Perovskite-Based Oxygen Carriers for Chemical Looping Combustion." Thesis, Université Laval, 2012. http://www.theses.ulaval.ca/2012/29261/29261.pdf.

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27

Radjenovic, P. M. "Novel ionic liquid based electrolytes for non-aqueous lithium-oxygen batteries." Thesis, University of Liverpool, 2017. http://livrepository.liverpool.ac.uk/3019782/.

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Superoxide (O2•-) is the key discharge intermediary driving many non-aqueous metal-oxygen (M-O2) battery chemistries.1–4 Characteristic dioxygen (O2x, where x = -2, -1, 0, +1) stretching vibrations (νO-O) have been well documented spectroscopically in numerous chemically unique systems.5–8 Therefore, the O2•- intermediary can be used as a diagnostic molecule to spectroscopically probe electrolyte effects on O2 reduction-evolution reaction (OR/ER) processes at the electrode/electrolyte interface, providing fundamental insight into non-aqueous M-O2 reaction mechanisms. However, it is first impor

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28

Shitta-Bey, Gbolahan O. "Nanostructured phenol-formaldehyde based carbons as electrodes for lithium/oxygen batteries." Thesis, University of Strathclyde, 2012. http://oleg.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=17990.

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29

Rameez, Shahid. "Engineering Cellular Hemoglobin-Based Oxygen Carriers For Use In Transfusion Medicine." The Ohio State University, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=osu1322552700.

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30

Pozzoli, A. "New water-soluble porphyrins for oxygen sensing in protein-based materials." Thesis, Liverpool John Moores University, 2018. http://researchonline.ljmu.ac.uk/8868/.

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Oxygen is a vital molecule for life and its precise quantification is pivotal to ensure correct functioning of cells. Instruments able to quantify accurately the oxygen levels are extremely important to understand cells behaviour especially in a three-dimension (3D) environment, where uneven distribution of oxygen can occur leading to zones of low cell viability. Optical oxygen sensing is a relatively recent method to monitor oxygen concentration. This approach exploits the emissive behaviour of a broad family of molecules (organic species and organometallic complexes), for which the luminesce

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31

Wu, Qi-Long. "Defect Based Three-Dimensional Hierarchical Porous Carbons for Efficient Oxygen Reduction Reaction." Thesis, Griffith University, 2022. http://hdl.handle.net/10072/419073.

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The energy crisis and environmental pollution are the two major global issues caused by the excessive utilization of fossil fuels. In recent decades, developing renewable energy via electrocatalytic conversion technology has been considered as a feasible approach to replace fossil fuels. However, the scarcity and high price of commercial catalysts (e.g., Pt/C catalyst for oxygen reduction reaction (ORR) and hydrogen evolution reaction (HER); RuO2 for oxygen evolution reaction (OER)) seriously hinder the industrialization of the electrocatalytic technology. Therefore, it is highly urgent to dev

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32

Gambu, Thobani G. "The mobility of oxygen containing species (OCS*) over Pt-based catalyst surfaces: Impact on the oxygen reduction reaction (ORR) activity." Doctoral thesis, Faculty of Engineering and the Built Environment, 2021. http://hdl.handle.net/11427/32705.

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The growing need to curb greenhouse gas emissions has made low-temperature proton exchange membrane fuel cells (PEMFCs) more attractive for automotive application. One of the major problems facing PEMFCs is the sluggish kinetics of the oxygen reduction reaction (ORR). To further enable wide-scale commercialisation of PEMFCs for automotive applications, major improvements in the ORR catalyst are therefore needed. An in depth understanding of the ORR mechanism over Pt surfaces can enable rational approaches in the search for more active ORR catalysts. The ORR occurs over multi-faceted Pt nanopar

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33

Su, Bei [Verfasser]. "Model-based investigation of nitrogen and oxygen cycles in the oxygen minimum zone of the eastern tropical South Pacific / Bei Su." Kiel : Universitätsbibliothek Kiel, 2015. http://d-nb.info/107386846X/34.

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34

Namjoshi, Shantanu A. "Interfacial properties of mixed conductors based on bismuth oxide for oxygen separation." Thesis, Georgia Institute of Technology, 1995. http://hdl.handle.net/1853/20205.

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35

Zhang, Zhen-Xue. "Deep case oxygen hardening and duplex surface treatment of Ti-based materials." Thesis, University of Birmingham, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.422709.

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36

Kruth, Angela. "Synthesis and characterisation of a novel oxygen- deficient manganese-based perovskite series." Thesis, University of Aberdeen, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.310732.

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A family of oxygen-deficient perovskite phases with compositions, Ca<sub>2</sub>Mn<sub>2-x</sub>Nb<sub>x</sub>O<sub>γ</sub> has been synthesised and characterised using X-ray Powder Diffraction and Thermogravimetry. Property characterisation has included the study of electrical properties by Impedance Spectroscopy and the investigation of magnetic properties for one composition, x = 1.0. Some compositions were tested for possible application as electrode materials in gas sensors. The Ca<sub>2</sub>Mn<sub>2-x</sub>Nb<sub>x</sub>O<sub>γ</sub> system 0 ≤ x ≤ 1.2, with variable oxygen content, γ,

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37

Fan, Audrey Peiwen. "Phase-based regional oxygen metabolism in magnetic resonance imaging at high field." Thesis, Massachusetts Institute of Technology, 2010. http://hdl.handle.net/1721.1/60162.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 2010.<br>Includes bibliographical references (p. 45-48).<br>Venous oxygen saturation (Yv) in cerebral veins and the cerebral metabolic rate of oxygen (CMRO₂) are important indicators for brain function and disease. Phase-susceptibility measurements in magnetic resonance imaging (MRI) have been used to quantify Yv in candidate cerebral veins. However, currently there is no method to quantify regional CMRO₂ using MRI. Here we propose a novel technique to quantify CMRO₂ from independent MRI

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38

Fernandez, Alvarez Georgina. "Palladium based catalysts for oxygen reduction in polymer electrolyte membrane fuel cells." Thesis, University of Newcastle upon Tyne, 2011. http://hdl.handle.net/10443/2213.

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An important issue in low temperature polymer electrolyte membrane fuel cells (PEMFC) is the lack of alternative catalysts to platinum for the oxygen reduction reaction (ORR). The high cost and potential limited availability of platinum restricts its long term use for large scale applications in PEMFC. Consequently, there is a great interest in alternative catalysts to platinum for PEMFC. In this research a systematic study of the synthesis and optimization of carbon-supported palladium and palladium alloy nanoparticle electrocatalysts is reported. The catalysts investigated were Pd, Pd-Au, Pd

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39

Jonasson, Hanna. "Model-based quantitative assessment of skin microcirculatory blood flow and oxygen saturation." Doctoral thesis, Linköpings universitet, Biomedicinsk instrumentteknik, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-127691.

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The microcirculation, involving the smallest vessels in the body, is where the oxygen transport to all tissue occurs. Evaluating microcirculatory parameters is, therefore, important and involves the quantification of oxygen content of red blood cells (RBCs), the amount of RBCs and their speed. Diffuse reflectance spectroscopy (DRS) can be used to estimate blood oxygen saturation and fraction of RBCs in tissue since oxygenated and deoxygenated blood have different light absorption characteristics. By illuminating the skin with white light and detecting the spectrum of the backscattered light, t

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40

Inwood, David Warwick. "X-ray and electrochemical studies of bimetallic Pt-based oxygen reduction electrocatalysts." Thesis, University of Southampton, 2017. https://eprints.soton.ac.uk/417989/.

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Dealloying carbon supported Pt alloy nanoparticles has been shown to particles with a Pt rich outer shell surrounded by an alloy rich core that are highly active electrocatalysts for the oxygen reduction reaction, which is of interest for use in fuel cell cathodes. The structure of these materials as well as how the size, elemental distribution and composition changes during fuel cell operation is important. The catalysts were subjected to an accelerated stability test under similar conditions to those experienced in fuel cell cathodes. At various points throughout the test, the ECSA was recor

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41

Mohamed, Rhiyaad. "Electrocatalysis of oxide-based materials for the oxygen reduction and evolution reactions." Doctoral thesis, University of Cape Town, 2016. http://hdl.handle.net/11427/20983.

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Electrochemical devices, such as fuel cells and electrolysers, are said to be at the forefront of a renewable energy technology revolution centred on hydrogen as an energy carrier. These devices rely on the chemical reactions of oxygen, namely the oxidation of water to evolve oxygen (oxygen evolution reaction, OER) and hydrogen , carried out in electrolyser applications or the reverse reaction, the reduction of oxygen to water (oxygen reduction reaction, ORR) producing electricity in the case of fuel cells . Th e reactions of oxygen are however still hindered by extremely slow reaction

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42

Song, Bjorn. "SYSTEMIC AND MICROCIRCULATORY EFFECTS OF HBOC-201: A HEMOGLOBIN-BASED OXYGEN CARRIER." VCU Scholars Compass, 2010. http://scholarscompass.vcu.edu/etd/2317.

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Top-loading This study compared the effects on oxygen (O2) transport of four fluids: 5.9% human serum albumin (HSA) a non-O2 carrying iso-oncotic solution (volume control);HBOC-201 (Hemopure, Biopure Corp., Cambridge, MA); MP50, HBOC-201 with a P50 of 18 mmHg; and lastly LP50, an HBOC-201 with P50 of 17 mmHg and higher viscosity (4 cP). It has been proposed that HBOC with a higher O2 affinity and a viscosity closer to that of whole blood will cause less vasoconstriction and thus a lower MAP than Hemopure (P50 = 40 mmHg and 2.2 cP). Intravital microscopic measurements were made on the spinotra

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43

Yan, Fu. "Computational modeling of oxygen consumption in the heart based on PET measurements." Link to electronic thesis, 2003. http://www.wpi.edu/Pubs/ETD/Available/etd-0429103-143658.

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44

Chaverri, Jové Diego. "A new model for estimating oxygen uptake based on postexercise measurements in swimming." Doctoral thesis, Universitat de Barcelona, 2016. http://hdl.handle.net/10803/403535.

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The assessment of oxygen uptake (Vo2) in swimming is a complex and cumbersome procedure and still faces limitations imposed by the environment and the equipment. There are two different approaches to measure Vo2 in water: 1) continuous measurement during exercise with a respiratory snorkel, and 2) post-exercise measurement with gas collection via face or mouth masks. However, the use of swimming snorkels modifies swimming technique and hydrodynamics, resulting in lower swimming speeds and impossibility to execute diving starts and turns. To overcome these problems, the backward extrapolation

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45

Dooley, Colette. "Green fluorescent protein based indicators of dynamic redox changes and reactive oxygen species." Connect to a 24 p. preview or request complete full text in PDF format. Access restricted to UC campuses, 2006. http://wwwlib.umi.com/cr/ucsd/fullcit?p3211820.

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Thesis (Ph. D.)--University of California, San Diego, 2006.<br>Title from first page of PDF file (viewed June 16, 2006). Available via ProQuest Digital Dissertations. Vita. Includes bibliographical references.

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46

Oftedal, Gaute. "Towards a DFT-based reactive force eld for lead,strontium, titanium, and oxygen." Thesis, Norwegian University of Science and Technology, Department of Physics, 2009. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-6357.

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47

Su, Qi [Verfasser]. "Graphene based electrode materials for solar cell and electrochemical oxygen reduction / Qi Su." Mainz : Universitätsbibliothek Mainz, 2012. http://d-nb.info/1024517586/34.

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48

Kettner, Marcos Adrian. "New oxygen-rich materials as high-energy dense oxidisers based on polynitro compounds." Diss., Ludwig-Maximilians-Universität München, 2015. http://nbn-resolving.de/urn:nbn:de:bvb:19-182898.

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49

Osborne, James John. "A study of semiconductor-based atomic oxygen sensors for ground and satellite applications." Thesis, University of Southampton, 1999. https://eprints.soton.ac.uk/47097/.

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50

Correia, Leslie Daniel Camara. "Oxygen transfer in hydrocarbon-aqueous dispersions and its applicability to alkane-based bioprocesses." Thesis, Link to the online version, 2007. http://hdl.handle.net/10019/999.

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