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Dissertations / Theses on the topic 'Oxide composite'

Author: Grafiati

Published: 11 January 2025

Last updated: 19 July 2025

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1

Li, Wei. "Composite polymer/graphite/oxide electrode systems for supercapacitors." University of Cincinnati / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1439309266.

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2

Creaser, Dale Abel. "Aspects of composite lanthanide oxide chemistry." Thesis, University of Nottingham, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.334547.

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3

Saintonge, Arnaud. "Élaboration d’un composite oxyde/oxyde à matrice d'aluminosilicate de baryum et fibres d'alumine." Electronic Thesis or Diss., Bordeaux, 2024. http://www.theses.fr/2024BORD0243.

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Dans l’industrie de l’aéronautique et de la défense, les applications thermostructurales nécessitent des matériaux toujours plus performants, alliant résistance mécanique, réfractarité et légèreté. Pour répondre à ces exigences, les matériaux composites à matrice céramique tout oxyde (OCMC) sont prometteurs. Parmi les matrices de ces OCMC, l'aluminosilicate de baryum (BAS) se distingue par ses propriétés physiques intéressantes, notamment en tant que matériau pour radômes. Cependant, pour rendre ce matériau fonctionnel à haute température, proche de sa température de fusion (1750°C), il est es

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4

Joshi, Sharmad Vinod. "Characterization of 3D printed metal oxide composite polymers." Miami University / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=miami1595511295182678.

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5

Milsom, Elizabeth Victoria. "Metal oxide-organic nano-composite and mesoporous oxide films : fundamental properties and applications." Thesis, University of Bath, 2007. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.441523.

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6

Dearn, Sophie Clare. "Development of a novel oxide-oxide ceramic matrix composite for high temperature structural applications." Thesis, University of Birmingham, 2015. http://etheses.bham.ac.uk//id/eprint/5924/.

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The introduction of ceramic matrix composites (CMCs) for structural applications in the hot section of a gas turbine provides many potential benefits over conventional alloy materials, including facilitating elevated operating temperatures. The development of an oxide-oxide CMC composed of commercially available Nextel 720 (3M) fibres within a porous alumina matrix was presented. A simple, low cost processing method involving slurry impregnation and subsequent consolidation and densification was developed, facilitating the production of dried pre-impregnated fabric (‘pre-preg’) that can be sto

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7

Ricca, Chiara. "Combined theoretical and experimental study of the ionic conduction in oxide-carbonate composite materials as electrolytes for solid oxide fuel cells (SOFC)." Thesis, Paris 6, 2016. http://www.theses.fr/2016PA066623/document.

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Les composites oxyde-carbonate pourraient constituer des électrolytes pour les SOFC fonctionnant entre 400-600°C car ils attendent une conductivité de 0,1 S/cm à 600°C. Une meilleure compréhension de l'origine de leurs performances est à ce jour nécessaire. Pour y parvenir, une approche combinée théorique et expérimentale a été développée. La conductivité, mesurée à travers la SIE, a été étudiée en fonction de la phase oxyde ou carbonate et de l'atmosphère de travail. Les résultats sur les composite de CeO2 ou YSZ ont montré que seule l'interface peut expliquer des observations surprenantes. D

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8

Besnard, Clémence. "Elaboration de composites céramiques oxyde/oxyde par caléfaction." Thesis, Bordeaux, 2019. http://www.theses.fr/2019BORD0162/document.

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De manière générale, les composites oxyde/oxyde sont la plupart du temps élaborés par frittage, par voie sol-gel ou par infiltration en phase gazeuse, CVI (« Chemical vapor infiltration »). Ces techniques d’élaboration comportent de nombreuses étapes engendrant un temps long d’élaboration ce qui peut entraîner une détérioration des propriétés du composite. Cette thèse s’intéresse à un procédé original et rapide de densification de préformes fibreuses développé par le Commissariat à l’Energie Atomique et aux énergies alternatives (CEA) : la caléfaction. Ce procédé est connu pour élaborer des co

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9

Sivasundram, Gopiraj. "Composite cathodes for intermediate temperature solid oxide fuel cells." Thesis, Imperial College London, 2006. http://hdl.handle.net/10044/1/11518.

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10

Dharmadasa, Ruvini. "Studies of composite metal oxide based ETA solar cells." Thesis, Loughborough University, 2011. https://dspace.lboro.ac.uk/2134/9117.

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The drive to produce low cost and efficient solar cells to replace solid state silicon cells has led to the rapid growth of nanotechnology in the PV sector. The extremely thin absorber (ETA) layer solar cell is a device that relies on the use of nanostructured anodes. The very high surface area of the metal oxides enhances the efficiency of the devices by increasing light harvesting in the cell. TiO2 has been the most common material of choice in these cells. However, alternative materials such as composite electrodes ZnO/TiO2, ZnO/SnO2, ZnO/Al2O3 have been considered. These systems also have

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11

Cibrev, Dejan. "Photoelectrocatalytic and photoelectrochromic properties of composite nanostructured metal oxide films." Doctoral thesis, Universidad de Alicante, 2019. http://hdl.handle.net/10045/99689.

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Los materiales llamados semiconductores (muchos de ellos óxidos metálicos) son capaces de generar portadores de carga (huecos y electrones) cuando se iluminan con luz suficientemente energética. Estos portadores son capaces de sostener reacciones redox. Los electrones de la banda de conducción (BC) y los huecos de la banda de valencia (BV) pueden reducir y oxidar, respectivamente, especies que estén en contacto directo con el semiconductor. Además, los electrones y huecos fotogenerados pueden eliminarse en el proceso que se conoce como recombinación. El grado en que se producen estas reaccione

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12

Jorgensen, Mette Juhl. "Lanthanum manganate based cathodes for solid oxide fuel cells." Thesis, Keele University, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.343243.

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13

Borius, Zoé. "Développement et caractérisation de CMC oxyde/oxyde élaborés par imprégnation de mèches en continu." Electronic Thesis or Diss., Ecole nationale des Mines d'Albi-Carmaux, 2024. http://www.theses.fr/2024EMAC0010.

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L’introduction de composites à matrice céramique (CMC) oxyde/oxyde est envisagée dans les turbomachines de nouvelle génération. Les principaux freins à l’industrialisation de ces matériaux sont la diversité des procédés d’élaboration, leurs coûts, ainsi que l’hétérogénéité des microstructures et des propriétés mécaniques. Ces travaux de thèse en collaboration entre l’Onera, l’IRT Saint-Éxupéry et l’ICA étudient une nouvelle voie d’élaboration de CMC alumine/alumine, par une étape d’imprégnation de mèche en continu. Pour commencer, une étude de formulation de suspensions aqueuses d’alumine comp

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14

Wang, Xiaodi. "Ionic Conducting Composite as Electrolyte forLow Temperature Solid Oxide Fuel Cells." Licentiate thesis, KTH, Functional Materials, FNM, 2010. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-24723.

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<p>Solid oxide fuel cells (SOFCs) are considered as one of the most promising powergeneration technologies due to their high energy conversion efficiency, fuel flexibilityand reduced pollution. The current SOFCs with yttria-stabilized zirconia (YSZ)electrolyte require high operation temperature (800-1000 °C), which not only hinderstheir broad commercialization due to associated high cost and technologicalcomplications. Therefore, there is a broad interest in reducing the operating temperatureof SOFCs. The key to development of low-temperature SOFCs (LTSOFCs) is to explorenew electrolyte materi

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15

Yung, Hoi. "Optimisation of composite cathodes for intermediate temperature solid oxide fuel cells." Thesis, Imperial College London, 2006. http://hdl.handle.net/10044/1/11338.

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16

Liu, Wei. "Development of novel metal oxide composite catalysts for complete oxidation reactions." Thesis, Massachusetts Institute of Technology, 1995. http://hdl.handle.net/1721.1/11374.

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17

Rodrigues, Raphael. "Synthesis and characterization of polysulfone/nanoclay/polyethylene oxide composite ultrafiltration membranes." Universidade de São Paulo, 2015. http://www.teses.usp.br/teses/disponiveis/3/3147/tde-19072016-114431/.

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Membrane structure modification is a common approach to enhance membrane properties and performance. For example, the addition of dopants to the membrane casting solution has been observed to increase hydrophilicity, alter surface and internal pore structure, increase thermal and mechanical resistance, and impart anti-fouling properties. In this study, it was evaluated how the addition of individual and simultaneous nanoclay and polyethylene oxide (PEO) dopants affected the structure and performance of polysulfone (PSU) ultrafiltration membranes. Membrane performance was evaluated in the cross

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18

Story, Christopher B. "Shape Memory Alloy / Glass Composite Seal for Solid Oxide Fuel Cells." Thesis, Virginia Tech, 2007. http://hdl.handle.net/10919/42709.

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Widespread use of solid oxide fuel cells is hindered by a lack of long-term durability of seals between metallic and ceramic components caused by thermal expansion mismatch induced cracking. A novel gas seal design incorporating an engineered thermal expansion gradient in a SrO-La2O3-Al2O3-B2O3-SiO2 glass matrix with a TiNiHf shape memory alloy mesh for active stress relief and crack healing is being developed. Coefficient of thermal expansion (CTE) measurements of the seal and fuel cell components shows the possibility for a thermal expansion gradient. Differential scanning calorimetry and

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19

Dev, Bodhayan. "Characterization of Ceramic/Glass Composite Seals for Solid Oxide Fuel Cells." The Ohio State University, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=osu1400847202.

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20

GARCIA, RAFAEL H. L. "Síntese e processamento de compósitos de zircônia-alumina para aplicação como eletrólito em células a combustível de óxido sólido." reponame:Repositório Institucional do IPEN, 2007. http://repositorio.ipen.br:8080/xmlui/handle/123456789/11554.

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Made available in DSpace on 2014-10-09T12:53:12Z (GMT). No. of bitstreams: 0<br>Made available in DSpace on 2014-10-09T13:58:24Z (GMT). No. of bitstreams: 0<br>Dissertação (Mestrado)<br>IPEN/D<br>Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP

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21

Ho, Beatrice Jane, and 何沛枝. "Effects of sandblasting on resin composite bonding to zirconia and titanium." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2013. http://hdl.handle.net/10722/194577.

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22

Duvenage, Sarel. "The feasibility of diamond-alumina as a wear resistant material." Pretoria : [s.n.], 2007. http://upetd.up.ac.za/thesis/available/etd-01122007-151002/.

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23

Villalba, Pedro Javier. "Nanodiamond Based Composite Structures for Biosensing Applications." Scholar Commons, 2014. https://scholarcommons.usf.edu/etd/5144.

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This dissertation presents the synthesis and application of nanodiamond based materials for electrochemical biosensors. In this research work, nanodiamond particles have been used to prepare doped and undoped nanocrystalline diamond films, and conducting polymer composites for enhanced biosensing. The performance of the synthetized materials towards sensing applications was evaluated against glucose amperometric biosensing. Besides, cholesterol biosensing was attempted to prove the capabilities of the platform as a generic biosensing substrate. Biosensors have been proved to provide reliable d

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24

Kusumawati, Yuly. "Oxide and composite electron transport layers for efficient dye-sensitized solar cells." Thesis, Paris 6, 2015. http://www.theses.fr/2015PA066240/document.

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Trois types des ETLs ont été développés et étudiés dans cette travaille comme une photoélectrode dans la cellule solaire à colorant (DSSC). Ils sont composés de (1) deux types de nanoparticules de TiO2-brookite, (2) le composite d'anatase et graphène et (3) la nanoparticule de ZnO qui a nanobâtonnet structure, respectivement. Toutes photoélectrodes sont préparées par le technique « doctor blade ». La morphologie des photoélectrodes ont été caractérisées par microscopie électronique à transmission (MET) et microscopie électronique à balayage (MEB). Les épaisseurs de couche sont mesurées en util

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25

Gupta, Puneet. "Regenerable metal oxide Composite particles and their use in novel chemical processes." The Ohio State University, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=osu1143225336.

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26

Greenstein, Katherine E. "Development of chemically active metal oxide composite nanofiber filters for water treatment." Diss., University of Iowa, 2016. https://ir.uiowa.edu/etd/2214.

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Small drinking water systems, often financially and resource-limited, face unprecedented challenges due to the current diversity and ubiquity of water pollutants. Well-characterized inorganic legacy pollutants, including arsenic, copper, hexavalent chromium, and lead, remain persistent in drinking water systems. In addition, emerging organic contaminants, like endocrine disrupting compounds and pharmaceuticals, are largely uncharacterized but prevalent in the environment and water supplies, calling into question what levels of these relatively new contaminants are truly safe in drinking water.

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27

Wang, Xiaodi. "Dual-ion Conducting Nanocompoiste for Low Temperature Solid Oxide Fuel Cell." Doctoral thesis, KTH, Funktionella material, FNM, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-95652.

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Solid oxide fuel cells (SOFCs) are considered as one of the most promising power generation technologies due to their high energy conversion efficiency, fuel flexibility and reduced pollution. There is a broad interest in reducing the operating temperature of SOFCs. The key issue to develop low-temperature (300~600 °C) SOFCs (LTSOFCs) is to explore new electrolyte materials. Recently, ceria-based composite electrolytes have been developed as capable alternative electrolyte for LTSOFCs. The ceria-based composite electrolyte has displayed high ionic conductivity and excellent fuel cell performan

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28

Andersson, Fredrik. "Graphene and graphene oxide as new lubricants in industrial applications." Thesis, Uppsala universitet, Tillämpad materialvetenskap, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-264853.

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This master thesis report evaluatesthe lubricating effect of graphene (G)and graphene oxide (GO). Thesematerials have been added, in particlecondition, in Ag-based slidingcontacts and lubricating greases. Thework focuses on the tribologicalevaluation of these materials,especially friction, wear and contactresistance analyses. The friction andwear behaviors of Ag-based contactscontaining of a wide concentrationrange of graphene and graphene oxideare tested against pure silver using atest load of 2 and 10 N at a constantspeed of 5 cm/s. It was revealed thatsmall amounts of G and GO are able tosi

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29

Liu, Chi-Feng, and 劉奇峰. "Patterning on NiO/YSZ composite oxide." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/06026743918752224540.

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碩士<br>國立成功大學<br>材料科學及工程學系碩博士班<br>94<br>Increasing the interface area between Ni/YSZ (anode) and YSZ (electrolyte) is an effective way to enhance the performance of solid oxide fuel cells. Patterning on the surface of NiO/YSZ was proposed as a novel method to increase the surface area of NiO/YSZ. Patterned PDMS mold was first fabricated by replicating various SU8 patterns on Si wafers from photo-lithography technique. Patterned NiO-YSZ substrate was obtained after fabricating NiO-YSZ green tape from the PDMS mold. The pattern transfer of PDMS mold from SU8 patterns was successful. A fracture-fr

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30

Yang, Zhen Yue, and 楊鎮岳. "Hydrothermal Synthesis of Reduced Graphene Oxide/Nickel Oxide Composite in Supercapacitor Applications." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/8gk9mn.

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碩士<br>國立臺北科技大學<br>資源工程研究所<br>105<br>Due to the large specific surface area, high conductivity and good chemical stability, Reduced Graphene Oxide(rGO) has been widely applied in various fields. NiO material has similar characteristics with RuO2. Due to the low price, NiO can be produced in large-scale production. Recently, the NiO capacitor has found practical application in life. In this study, the linear NiO/rGO is synthesized by hydrothermal method to form an anode material with superior properties. There are three parts in the thesis: (1) the effect of preparation parameters on the structu

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31

Rout, Smrutirekha. "Synthesis and Characterization of CuO/graphene oxide composite." Thesis, 2013. http://ethesis.nitrkl.ac.in/5108/1/411PH2113.pdf.

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Copper oxide and graphene oxide composite have been prepared successfully. The prepared composite have been characterized by XRD, SEM and UV-Vis. Band gap calculation using formula Eg= hʋ from UV-Vis shows a decrease in band gap. The electrical transport is also expected to increase but yet to be analysed.

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32

Liu, Ying-Ming, and 劉穎銘. "Composite Structures of Tungsten Oxide/Titanium Oxide for Multi-Functional Smart Window Applications." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/52216072884585259821.

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碩士<br>國立臺灣科技大學<br>光電工程研究所<br>101<br>The purpose of this research is to combine the titanium oxide material with tungsten oxide material, and we analyze its characteristic of electrochromism and photocatalysis. In this work, the tungsten films were deposited on ITO substrate and prepared in reactive DC magnetron sputtering system. The as-deposited samples were subsequently subjected to thermal annealing in quartz tube furnace with a 2-step heat treatment. The tungsten oxide nanowires were synthesized self-catalytically on ITO substrate. Then the titanium films were deposited on the tungsten oxi

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33

HUANG, AN-PO, and 黃鞍柏. "Electrochemical Codeposition of Graphene Oxide/Polyaniline/Molybdenum Oxide Composite Electrodes Applied to Supercapacitors." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/qm5rtz.

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34

Huang, Yi-Jun, and 黃奕鈞. "Indium Oxide/Yttria-Stabilized Zirconia Composite Films as Electrolytes for Solid Oxide Fuel Cells." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/4576zg.

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碩士<br>中原大學<br>化學工程研究所<br>102<br>To the best of our knowledge, there are two methods to increase ionic conductivity of solid oxide fuel cells ( SOFCs ) electrolyte. One is the decrease in the thickness of electrolyte and the other is the electrolyte is doped by foreign materials. In this work, indium oxide (In2O3) is doped into electrolyte to improve the ionic conductivity of electrolyte. Yttria-stabilized zirconia(YSZ) and indium hydroxide (In(OH)3) are synthesized by hydrothermal method. The YSZ powder is about 90 nm. Various In(OH)3 morphology can be controlled by different concentration of

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35

HUANG, JHEN-TING, and 黃振庭. "Cobalt Oxide/Manganese Oxide/Nanocarbon Tube/Graphene Composite Electrophoretic Coating Process For Supercapacitor Development." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/26dgcc.

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碩士<br>國立勤益科技大學<br>化工與材料工程系<br>107<br>Supercapacitors is energy storage components that have emerged in recent years, it have higher power density than chemical batteries, and energy density are superior to capacitor , it also have fast charge and discharge, and longer cycle life. It can be used in various fields, such as electronic equipment, backup energy, hybrid vehicle energy, etc. In addition to the physical adsorption/desorption of the electrolyte ions of a typical electric double-layer capacitor, the large capacitance provided by the Faraday redox reaction of the metal oxide on the surfa

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36

Weng, Jui-chung, and 翁瑞宗. "Preparation and Photoreactive Properties of Bismuth Oxide Composite Powder." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/ga2qtf.

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碩士<br>逢甲大學<br>材料科學所<br>100<br>In the present study, bismuth oxide (Bi2O3) powders were prepared from bismuth nitrate (BiNH) by spray pyrolysis (SP) and hydrothermal (HT) processes. The influences of both processes on the characteristics and photoreactive behaviors of the resulting powders were investigated. Subsequently the Bi2O3 powder was doped with various amounts (0, 5, 10 and 20 at%) of zinc (Zn) to modify its characteristics, photoreactive and catalytic properties. The powders were then deposited onto a diffusor of UV-LED (ultraviolet light-emitting diode) to inhibit the UV light emitted

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37

Lin, Yu-Hsun, and 林佑勳. "Applications of Manganese Oxide Containing Composite Aerogels in Supercapacitors." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/78692357690863189149.

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碩士<br>國立清華大學<br>化學工程學系<br>98<br>Manganese oxide aerogels were successfully synthesized with an epoxide addition procedure by using MnCl2‧4H2O as the precursor. The as-prepared aerogels possessed the crystalline phase of hausmannite of Mn3O4 and a BET specific surface area of 79m2/g. After heat treatment at 300 oC, the aerogels gave specific capacitances (SC) of up to 122F/g in 0.5M Na2SO4 solution, at a scan rate of 25mV/s, and within the window of 0.1~0.9V vs. Ag/AgCl. The resulting cyclic voltammetry (CV) loops appeared rectangular, implying high reversibility. After 2000 cycles of CV scans,

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38

Liu, Jyong-Yue, and 劉炯岳. "Steam Reforming Of Ethanol Over Nickel-Lanthanum Composite Oxide." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/44619581181556729768.

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碩士<br>國防大學理工學院<br>應用化學碩士班<br>97<br>A nickel-lanthanum composite oxide, U-LaNiOx, with 1:1 molar ratio was prepared by the co-precipitation-oxidation method (PO) and assisted with ultrasonic irradiation (240 W). The as-prepared sample was further calcined at 300, 500 and 700 ℃ for 2 h (assigned as U-C300, U-C500 and U-C700, respectively). All samples were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), BET and temperature programmed reduction (TPR). Catalytic activities toward the steam reforming of ethanol (SRE) were tested in the temperature (300-450℃) in a s

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Lo, I. Hsiang, and 羅一翔. "ZnO nanowires/Metal Oxide composite electrodes for Supercapacitor applications." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/26807744198361583137.

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博士<br>國立清華大學<br>材料科學工程學系<br>104<br>A high-performance supercapacitor based on Ni(OH)2 nanoflakes modified ZnO nanowires (NWs) was developed. The well-aligned ZnO NWs were synthesized by chemical bath deposition, followed by pulse electrodeposition of Ni(OH)2 nanoflakes on the surface of ZnO NWs. The effects of the pulse electrodeposition conditions were systematically investigated. Both the current-on time and current-off time were found to affect the size and interspacing of the nanoflakes, while the deposition cycle number determines the thickness of the Ni(OH)2 nanoflake shell. The ZnO/Ni(O

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Chen, Jing-Yu, and 陳境妤. "Electroless Deposition of Composite Ruthenium Oxide and Ruthenium Films." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/38392338370006509475.

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碩士<br>國立交通大學<br>材料科學與工程系所<br>97<br>A 35–300 nm amorphous ruthenium oxide and ruthenium composite film has been deposited by electroless plating on a Cu substrate. The plating solution contained compounds of K2RuCl5•xH2O, NaNO2, NaOH, and NaClO. Variables including different mixing steps, concentrations of NaNO2(aq), and plating time were investigated. The reaction steps for the electroless plating were indentified. Stability of the plating solution was confirmed by UV-Vis absorption spectra with narrow maximum wavelength distribution. EDX, SEM, AFM, XPS, and Raman spectroscopy were employed to

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41

Wang, Yong-Huei, and 王詠慧. "Tungsten oxide/Carbon Aerogel Composite for Applications in Supercapacitors." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/49916452351874950607.

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碩士<br>國立清華大學<br>化學工程學系<br>100<br>Tungsten trioxide, a low cost and an environmentally friendly supercapacitive material, is deposited as a thin nanostructure of nanocrystals into carbon aerogels, a mesoporous host template of high specific surface areas and high electric conductivities, with a wet chemistry process. This tungsten trioxide/carbon aerogel composite shows ultrahigh specific capacitances(tungsten trioxide based) of around 700 F/g at a scan rate of 25 mV/s within a potential window of -0.3 to 0.5 V in 0.5M H2SO4 solutions. The composite also possesses an excellent high rate capabil

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42

Hung, Chia-chi, and 洪嘉琪. "Preparation of carbon felt support zinc oxide composite material." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/65887445408408532228.

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碩士<br>逢甲大學<br>材料科學所<br>100<br>Abstract In this study, the sol-gel method was used to prepare ZnO / carbonfelt (ZnO/C) composite photocatalyst material. The process impregnated carbonfelt in zinc acetate sol-gel solution at different concentration (0.1 M, 0.01 M, 0.001 M). Then dried in oven 24 hr at 70oC, and then heated at different temperature (200oC, 300oC, 400oC) fot 1 to 30min. The zinc ions would reduced to zinc oxide particles in carbonfelt fiber surface after heated. The carbon composite zinc oxide felt would been test by photodegradation experiment. In this experiment, methylene blue

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Wu, Yi-Zhen, and 吳翊甄. "NiO-Reduced Graphene Oxide-ZnO composite nanostructures for photodetectors." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/f9p7p2.

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碩士<br>國立臺灣科技大學<br>電子工程系<br>107<br>In this study, we report UV photodetectors (PDs) based on the combination of ZnO nanorods (ZNR), reduced graphene oxide (rGO) and nickel oxide (NiO) via a simple solution process. More briefly, we divide this study into four parts. The first part is about ZNR growth using different seed layer spin speed based UV PDs. The second part comprises the UV PDs based on rGO-ZNR with different seed layer spin speed and the third part explains UV PDs based on NiO-ZNR with different seed layer spin speed. The fourth part describes the UV PDs with the combinations of NiO-

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Huang, Yung-Han, and 黃永翰. "Preparation Processes and Characteristics of Metal-Oxide Composite Catalysts." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/8ysakc.

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博士<br>國立臺北科技大學<br>材料科學與工程研究所<br>103<br>There are two different approaches in this thesis. One approach is to synthesize spinel-type oxides as a precursor preparing Cu or Ni catalysts for steam reforming of methanol (SRM). The other approach focuses on preparation of Au or Pt catalysts from intemetallic compounds or amorphous alloys to perform CO oxidation reaction. These approaches in terms of the ellingham diagram which is usually used to evaluate the ease of reduction of metal oxides or oxidation of metal. Firstly, various Cu-based spinel compounds, i.e., CuFe2O4, CuMn2O4, CuAl2O4 and CuLa2O

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Tsung-YuanHsu and 徐聰元. "Preparation and Characterization of Cesium Tungsten Oxide Composite Nanoparticles." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/94frw4.

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碩士<br>國立成功大學<br>化學工程學系<br>107<br>Abstract This thesis concerns the preparation and catalytic application of cobalt tungstate/cesium tungsten oxide (CoWO4/CsxWO3-H) composite nanoparticles, which could be synthesized successfully via two-step solvothermal process and the followed calcination in H2/Ar (5/95) atmosphere at 600oC. Because they possessed the excellent NIR photothermal conversion property of cesium tungsten oxide and the catalytic properties of cobalt tungstate, the resulting CoWO4/CsxWO3-H composite nanoparticles were utilized as the catalyst with near-infrared (NIR) and sunlight p

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Omoniyi, Adekunle. "Poly(Ethylene Oxide)-block-Polysulfone-block-Poly(Ethylene Oxide) / Poly(etherblock-amide) Composite Membrane for Carbon Dioxide Separation." Thesis, 2012. http://hdl.handle.net/10754/235353.

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This research study describes the gas separation performance of different sets of Polyethyleneoxide-block-Polysulfone-block-Polyethyleneoxide/poly(ether-block-amide) (PEO-b-PSU-b-PEO/Pebax) composite membranes for CO2 separation from N2 and CH4. Gas permeation properties of the membranes prepared were studied at ambient temperature (21oC) and 8bar. The dependence of gas flux and selectivity on pressure was explored for different pressures from 2.5 bar up to 19 bar also at ambient temperature. Pebax/PAN composite membranes have a range of CO2 permeance of 4467±274 GPU, 365±64 GPU for CH4 and 15

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YI-JYUNLIN and 林怡君. "Composite of Cobalt Oxide and B-doped Reduced Graphite Oxide for Oxygen Reduction and Evolution." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/98837166814160615615.

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Yeh, Ji-Chang, and 葉吉昌. "Fabrication of TiO2/Graphene Oxide Composite Nonwoven Fabrics by Electrospraying." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/7798c9.

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Chang, Jian-Sheng, and 張建生. "Study on Composite Electrolytes of Polyethylene Oxide and Waterborne Polyurethane." Thesis, 1998. http://ndltd.ncl.edu.tw/handle/46731560714170489595.

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碩士<br>國立成功大學<br>化學工程學系<br>86<br>Various composite electolytes(CE) were prepared by mixing polytetramethyleneglycol based waterborne polyurethane(WPU( PTMG)), polyethylene oxide(PEO), andLiClO4/propylene carbonate( PC). The conductivity of these CEs were investigated by using alternating current(AC) impednace. Differential scanning calorimetry(DSC) and polarizing microscopy(PM) were employed for material characterization. The temperature dependence of the conductivity follows the Arrhenius l

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Wang, Chen-Ching, and 王振慶. "Ruthenium oxide / carbon composite electrodes for the application of electrochemical." Thesis, 2002. http://ndltd.ncl.edu.tw/handle/59136048573357969873.

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碩士<br>國立中正大學<br>化學工程研究所<br>90<br>The purpose of this paper is to develop C-Ru composites for electrochemical supercapacitors using the impregnation and electroless deposition. These methods easily provide the uniform deposits of desired metals on the surface of carbon substrates. The electrochemical properties and redox behaviour of these hybrid Ru oxide-carbon composites were systematically investigated in 0.1 M H2SO4 by cyclic voltammetry (CV) and chronopotentiometry (CP). The effects of anodizing in H2SO4, annealing in air and oxidizing in NaOH on the capacitive performance have been studie

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