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Dissertations / Theses on the topic 'Carbon Nitride'

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Published: 4 June 2021
Last updated: 25 July 2025

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1

Wang, Hongji. "Investigations into carbon nitrides and carbon nitride derivatives." Diss., Ludwig-Maximilians-Universität München, 2013. http://nbn-resolving.de/urn:nbn:de:bvb:19-165492.

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Carbon nitrides and carbon nitride derivatives are promising photocatalysts. The main focus of this thesis is the synthesis and characterization of various carbon nitrides (incompletely condensed melon, carbon nitride doped cesium titanate, ultra-long calcined melon, and OH-melem). Those carbon nitrides were then tested with regard to their photocatalytic properties. In the first part of chapter 3 of this thesis, we focus on a material called ‘‘melem oligomer’’. Two different synthesis routes were applied (open system and half open system) and the composition and structure of this material wa
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2

Wang, Hongji [Verfasser], and Bettina [Akademischer Betreuer] Lotsch. "Investigations into carbon nitrides and carbon nitride derivatives / Hongji Wang. Betreuer: Bettina Lotsch." München : Universitätsbibliothek der Ludwig-Maximilians-Universität, 2013. http://d-nb.info/1047543478/34.

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Merchant, Alexander Raymond. "An investigation of carbon nitride." Thesis, The University of Sydney, 2001. http://hdl.handle.net/2123/832.

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This thesis employs experimental and theoretical methods to characterise carbon nitride solids and proposes a generalstructural model for amorphous carbon nitride (a-C:N). It finds that a-C:N deposited by several methods is essentially identical, with similar bonding environments for carbon and nitrogen atoms. Using evidence from several techniques, the saturation of nitrogen in an sp2 carbon matrix is discussed. The experimental studies on a range of carbon nitride solids show no evidence for a crystalline form of carbon nitride. In addition to the experimental characterisation of a-C:N, ab i
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Merchant, Alexander Raymond. "An investigation of carbon nitride." University of Sydney. Physics, 2001. http://hdl.handle.net/2123/832.

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This thesis employs experimental and theoretical methods to characterise carbon nitride solids and proposes a generalstructural model for amorphous carbon nitride (a-C:N). It finds that a-C:N deposited by several methods is essentially identical, with similar bonding environments for carbon and nitrogen atoms. Using evidence from several techniques, the saturation of nitrogen in an sp2 carbon matrix is discussed. The experimental studies on a range of carbon nitride solids show no evidence for a crystalline form of carbon nitride. In addition to the experimental characterisation of a-C:N, ab i
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5

Kharlamov, A. I., M. E. Bondarenko, G. A. Kharlamova, and V. V. Fomemko. "Direct Synthesis of O-doped Carbon Nitride and Oxide of Graphite-like Carbon Nitride from Melamine." Thesis, Sumy State University, 2015. http://essuir.sumdu.edu.ua/handle/123456789/42601.

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It was first performed a special method of pyrolysis of melamine in order to study the possibility of coproduction of carbon nitride and its oxidized derivatives. New compound as a graphite-like carbon nitride oxide (g-C3N4)O, which is isostructural analogue of graphite oxide, and doped with oxygen ( ~ 8.1 % ), carbon nitride (O-g-C3N4) were obtained. In contrast to known methods for the preparation of samples doped with oxygen carbon nitride a new route does not provide a preliminary synthesis of g-C3N4.The synthesized carbon nitride oxide is easily stratified and dissolved in water to form a
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6

Berlind, Torun. "Carbon Nitride : Characterization and Protein Interactions." Doctoral thesis, Linköpings universitet, Tillämpad optik, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-19710.

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This thesis concerns synthesis and characterization of carbon-based materials and theinvestigation of the possible use, of a selection of these materials, in biomedicalapplications. Protein adsorption and blood plasma tests were used for this purposeutilizing a surface sensitive technique called spectroscopic ellipsometry. The materials were synthesized by physical vapor deposition and characterizedregarding microstructure, mechanical properties and optical properties. The ternaries BC-N and Si-C-N as well as carbon and carbon nitrides (CNx) of different microstructureshave been examined. In t
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Schmidt, Susann. "Carbon Nitride and Carbon Fluoride Thin Films Prepared by HiPIMS." Doctoral thesis, Linköpings universitet, Tunnfilmsfysik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-90912.

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The present thesis focuses on carbon based thin films prepared by high power impulse magnetron sputtering (HiPIMS) and direct current magnetron sputtering (DCMS). Carbon nitride (CNx: 0 < x < 0.20) as well as carbon fluoride (CFx: 0.16 < x < 0.35) thin films were synthesized in an industrial deposition chamber by reactive magnetron sputtering of graphite in Ne/N2, Ar/N2, Kr/N2, Ar/CF4, and Ar/C4F8 ambients. In order to increase the understanding of the deposition processes of C in the corresponding reactive gas mixture plasmas, ion mass spectroscopy was carried out. A detailed eval
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8

Neidhardt, Jörg. "Fullerene-like carbon nitride thin solid films /." Linköping : Univ, 2004. http://www.bibl.liu.se/liupubl/disp/disp2004/tek877s.pdf.

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9

Khan, Muhammad Abdullah. "Carbon nitride based materials for heterogeneous photocatalysis." Thesis, University of Oxford, 2016. https://ora.ox.ac.uk/objects/uuid:8498a9f5-e5c8-4eda-b62d-0cd36471759c.

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Photocatalysis on semiconductor surfaces has grown tremendously in the last four decades. One reason for this is its analogy with photosynthesis, the most important natural photochemical process. Semiconductors to some extent can mimic the key steps of this fascinating heterogeneous photocatalytic process, i.e., photochemical charge generation, charge trapping, interfacial electron exchange and subsequent reaction. Building on this premise this thesis constitutes an investigation into the photocatalytic properties and applications of semiconducting layered framework carbon nitride based materi
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10

Lin, Yun Materials Science &amp Engineering Faculty of Science UNSW. "Contact deformation mechanism of complex carbon nitride and metal nitride based bi-layer coatings." Awarded by:University of New South Wales. Materials Science & Engineering, 2009. http://handle.unsw.edu.au/1959.4/44544.

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Hard wear-resistant coatings have been widely applied 10 cutting tools to increase their durability and improve tribological properties. Physical vapour deposited TiAIN-based coatings. used in dry cutting performances. Have shown excellent hot hardness and oxidation resistance. The main handicap of these coatings is their brittleness. Another type of coatings arc amorphous. rather than crystalline. for example those based on fullerene-like carbon nitride (CNx). Such coatings possess high elasticity. but relatively low hardness. In this study. bi-Iayer coatings. designed as 1I CNx-based outer
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11

Sattler, Andreas. "Investigations into s-Heptazine-Based Carbon Nitride Precursors." Diss., lmu, 2010. http://nbn-resolving.de/urn:nbn:de:bvb:19-116660.

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12

Munktell, von Fieandt Sara. "Controlled interlayer between titanium carbon-nitride and aluminiumoxide." Thesis, Uppsala universitet, Institutionen för materialkemi, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-161088.

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In the industry of metal cutting tools the conditions are extreme; the temperature can vary thousand degrees rapidly and the pressure can be tremendously high. To survive this kind of stress the cutting tool must be both hard and tough. In order to obtain these properties different coatings are used on a base of cemented carbide, WC-Co. Common coatings are hard ceramics like titanium nitride and titanium carbon-nitride with an outer layer of aluminium oxide. In this thesis the possibility of using titanium dioxide as an interlayer between titanium carbon-nitride and aluminium oxide to control
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13

Wirnhier, Eva Antonie. "Solvothermal and Ionothermal Approaches to Carbon Nitride Chemistry." Diss., Ludwig-Maximilians-Universität München, 2013. http://nbn-resolving.de/urn:nbn:de:bvb:19-157389.

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14

Rodil, Sandra Elizabeth. "Preparation and characterisation of carbon nitride thin films." Thesis, University of Cambridge, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.621017.

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15

Miyajima, Yoji. "Electronic properties of pulsed laser deposited amorphous carbon and carbon nitride thin films." Thesis, University of Surrey, 2007. http://epubs.surrey.ac.uk/843244/.

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This thesis is concerned with the electrical properties of the disordered amorphous material, amorphous carbon and carbon nitride films. At first, hydrogenated amorphous carbon was deposited using rf plasma enhanced chemical vapour deposition with methane as a precursor. Changing the deposition parameter, such as the input power results in the negative self bias modification and thus changes in the properties of the deposited film. The hydrogen condition in the deposition chamber is important for the growth of these films. With the demonstration of an achieve electronic device, a resonance tun
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Almasoudi, Afaf. "Templated and activated porous carbon and carbon nitride materials for gas storage applications." Thesis, University of Nottingham, 2014. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.659191.

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This Thesis details the synthesis, characterisation, and appl ications of micro/mesoporous carbon materials with tunable porosity prepared via template carbonisation. The main focus is the development of carbonaceous porous materials via for energy related gas storage applications. The Thesis investigates three synthesis strategies, namely; (i) nanocasting via liquid impregnation using zeolitic imidazolate framework (ZIF-8) as template, (ii) combination of liquid impregnation and chemical vapour deposition (CVD) using ZIF -8 as template and (iii) use of zeolite 13X and Y as templates for porou
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17

Todi, Vinit O. "Investigation of reactively sputtered boron carbon nitride thin films." Doctoral diss., University of Central Florida, 2011. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/5069.

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Research efforts have been focused in the development of hard and wear resistant coatings over the last few decades. These protective coatings find applications in the industry such as cutting tools, automobile and machine part etc. Various ceramic thin films like TiN, TiAlN, TiC, SiC and diamond-like carbon (DLC) are examples of the films used in above applications. However, increasing technological and industrial demands request thin films with more complicated and advanced properties. For this purpose, B-C-N ternary system which is based on carbon, boron and nitrogen which exhibit exception
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18

Nevidomskyy, Andriy Hryhorovych. "First principles calculations of carbon and boron nitride nanotubes." Thesis, University of Cambridge, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.615061.

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19

He, Jijiang. "Preparation and photocatalysis of graphite carbon nitride based photocatalysts." Thesis, Curtin University, 2015. http://hdl.handle.net/20.500.11937/521.

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The connection between ritual and the interior is interrogated through a theoretical framework integrating Van Gennep’s Rites of Passage Theory and Turner’s Theory of Liminality. A multi-faceted methodological framework is developed from the interrogation of the disciplinary edges of multiple methodologies, addressing the experiential, cultural and subjective dimensions of ritual. This new way of exploring the interior demonstrates how knowledge can be acquired from the body’s immersion in unfolding ritual situations, revealing elements of ritual and interior in relation to one another and the
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20

Lees, V. J. "High pressure synthesis and characterisation of layered carbon nitride materials." Thesis, University College London (University of London), 2012. http://discovery.ucl.ac.uk/1389335/.

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The research undertaken in this project has involved the synthesis of the carbon nitride material C6N9H3.HCl under high pressures and temperatures in the piston cylinder apparatus. The synthesis conditions of the material have been perfected and the relatively well crystallised products have been characterised in several ways to try to gain a better understanding of the structure of the material. Characterisation techniques used include; elemental analysis, X-ray diffraction, infrared spectroscopy, scanning and transmission electron microscopy, X-ray photoelectron spectroscopy, visible, ultrav
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21

Gammon, W. Jason. "Chemical bonding in hard and elastic amorphous carbon-nitride films." W&M ScholarWorks, 2003. https://scholarworks.wm.edu/etd/1539623423.

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In this study, the chemical bonding in hard and elastic amorphous carbon nitride (a-CNx) films is investigated with x-ray photoelectron spectroscopy (XPS) and 15N, 13C, and 1H nuclear magnetic resonance (NMR) spectroscopy. The films were deposited by DC Magnetron sputtering in a pure nitrogen discharge on Si(001) substrates at 300--400??C. Nanoindentation measurements reveal an elastic modulus of ∼50 GPa and a hardness of ∼5 GPa, thus confirming our films are highly elastic but resist plastic deformation.;Our 13C NMR study demonstrates the absence of sp 3-bonded carbon in this material. Collec
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22

Holst, James Robert. "Synthesis of inorganic heptazine-based materials." Diss., University of Iowa, 2009. https://ir.uiowa.edu/etd/242.

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This dissertation describes research on the synthesis and characterization of extended heptazine–based, graphite–like carbon nitride materials (CNx), as well as molecular heptazine (C6N7) derivatives. Spurred on by recent triazine to heptazine conversion studies, a structural examination was performed on an amorphous nitrogen–rich carbon nitride material formed via the rapid and exothermic self-propagating decomposition of a triazine (C3N3) precursor, trichloromelamine (TCM). The thermally stable and insoluble CNxHy product was determined to be composed of heptazine repeat units. This conclusi
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23

Liu, Mengdi. "Ta₃N₅/Polymeric g-C₃N₄ as Hybrid Photoanode for Solar Water Splitting:." Thesis, Boston College, 2018. http://hdl.handle.net/2345/bc-ir:108366.

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Thesis advisor: Dunwei Wang<br>Water splitting has been recognized as a promising solution to challenges associated with the intermittent nature of solar energy for over four decades. A great deal of research has been done to develop high efficient and cost-effective catalysts for this process. Among which tantalum nitride (Ta₃N₅) has been considered as a promising candidate to serve as a good catalyst for solar water splitting based on its suitable band structure, chemical stability and high theoretical efficiency. However, this semiconductor is suffered from its special self-oxidation proble
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24

Xiao, Xiaoling, and S3060677@student rmit edu au. "Characterization of nano-structured coatings containing aluminium, aluminium-nitride and carbon." RMIT University. Applied Sciences, 2008. http://adt.lib.rmit.edu.au/adt/public/adt-VIT20081217.100453.

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There is an every increasing need to develop more durable and higher performing coatings for use in a range of products including tools, devices and bio-implants. Nano-structured coatings either in the form of a nanocomposite or a multilayer is of considerable interest since they often exhibit outstanding properties. The objective of this thesis was to use advanced plasma synthesis methods to produce novel nano-structured coatings with enhanced properties. Coatings consisting of combinations of aluminum (Al), aluminum nitride (AlN) and amorphous carbon (a-C) were investigated. Cathodic vacuum
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Kasap, Hatice. "Carbon nitride for solar H2 production coupled to organic chemical transformations." Thesis, University of Cambridge, 2019. https://www.repository.cam.ac.uk/handle/1810/289454.

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Artificial photosynthesis utilises solar-light for clean fuel H2 production and is emerging as a potential solution for renewable energy generation. Photocatalytic systems that combine a light harvester and catalysts in one-pot reactor are promising strategies towards this direction. Yet, most of the reported systems function by consuming excess amount of expensive sacrificial reagents, preventing commercial development. In this thesis, carbon nitrides (CNx) have been selected as non-toxic, stable and low-cost photocatalysts. CNx are first introduced as efficient light harvesters, to couple al
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26

Montoya, Anthony Tristan. "Synthesis of carbon nitrides and composite photocatalyst materials." Diss., University of Iowa, 2018. https://ir.uiowa.edu/etd/6479.

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This thesis describes the synthesis, characterization and photocatalytic applications of carbon nitride (C3N4) and titanium dioxide (TiO2) materials. C3N4 was prepared from the thermal decomposition of a trichloromelamine (TCM) precursor. Several different reactor designs and decomposition temperatures were used to produce chemically and thermally stable orange powders. These methods included a low temperature glass Schlenk reactor, a high mass scale stainless steel reactor, and decomposition at higher temperatures by the immersion of a Schlenk tube into a furnace. These products share many of
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Lotsch, Bettina Valeska. "From Molecular Building Blocks to Condensed Carbon Nitride Networks: Structure and Reactivity." Diss., [S.l.] : [s.n.], 2006. http://edoc.ub.uni-muenchen.de/archive/00006492.

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28

Wang, Jing. "Development of Graphitic Carbon Nitride based Semiconductor Photocatalysts for Organic Pollutant Degradation." Doctoral thesis, KTH, Tillämpad processmetallurgi, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-173216.

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As a potential solution to the global energy and environmental pollution, design and synthesis of artificial photocatalysts with high activities have attracted increasing scientific interests worldwide. In recent years, the graphitic carbon nitride (g-C3N4) has shown new possible applications in the photocatalytic field due to its unique properties. However, the photocatalytic efficiency of the pristine g-C3N4 is greatly limited by the high recombination rate of the photo-induced electron-hole pairs. In this thesis, the aim is to design and fabricate efficient g-C3N4 based photocatalysts with
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Li, Lingling. "Porphyrins, graphitic carbon nitride and their hybrids for photocatalytic solar fuel generation." HKBU Institutional Repository, 2020. https://repository.hkbu.edu.hk/etd_oa/736.

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Photocatalytic solar fuel generation is the most green, sustainable and viable approach to deal with both the ever-growing energy crisis and environmental issues, simultaneously. The work presented in this thesis is focused on the development of new organic carbonaceous semiconductors, typically, carbon quantum dots (CQDs) and graphitic carbon nitride (g-C3N4), and porphyrin small molecules and their hybrids with graphitic carbon nitride, meanwhile, their application in the field of photocatalytic solar fuel generation. In the chapter 1, a general review about background and mechanism of photo
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30

Monteparo, Christopher Nicholas. "Gallium nitride sensors for hydrogen/nitrogen and hydrogen/carbon monoxide gas mixtures." [Tampa, Fla] : University of South Florida, 2009. http://purl.fcla.edu/usf/dc/et/SFE0002838.

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31

Muchharla, Baleeswaraiah. "Low Temperature Electrical Transport in 2D Layers of Graphene, Graphitic Carbon Nitride, Graphene Oxide and Boron-Nitrogen-Carbon." OpenSIUC, 2015. https://opensiuc.lib.siu.edu/dissertations/1132.

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In this work, we have investigated temperature dependent electrical transport properties of carbon based two-dimensional (2D) nanomaterials. Various techniques were employed to synthesize the samples. For instance, high quality large area graphene and boron, nitrogen doped graphene (BNC) were grown using thermal catalytic chemical vapor deposition (CVD) method. Liquid phase exfoliation technique was utilized to exfoliate graphene and graphitic carbon nitride samples in isopropyl alcohol. Chemical reduction technique was used to reduce graphene oxide (rGO) by utilizing ascorbic acid (a green ch
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32

Zobelli, Alberto. "Electron beam generation and structure of defects in carbon and boron nitride nanotubes." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2007. http://nbn-resolving.de/urn:nbn:de:swb:14-1197988167199-13274.

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The nature and role of defects is of primary importance to understand the physical properties of C and BN single walled nanotubes. Transmission electron microscopy (TEM) is a well known powerful tool to study the structure of defects in materials. However, in the case of SWNTs, the electron irradiation of the TEM may knock out atoms. This effect may alter the native structure of the tube, and has also been proposed as a potential tool for nanoengineering of nanotubular structures. Here we develop a theoretical description of the irradiation mechanism. First, the anisotropy of the emission ener
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33

Matar, M. K. H. A. "A computational study of the structure and properties of titanates and carbon nitride." Thesis, University College London (University of London), 2011. http://discovery.ucl.ac.uk/1333238/.

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This thesis presents results of a computational investigation focusing on two classes of materials: • Those of interest as anodes in rechargeable Li ion batteries, particularly TiO2 polymorphs and a novel Ti oxysulfide; and • A graphitic carbon nitride, where the high pressure structural and electronic transformations, and intercalation properties are studied. The first part of the work considers the Li intercalation in TiO2 Brookite. Calculations identify stable sites and low energy configurations during the intercalation process up to full occupancy. It is demonstrated that Li intercalation
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Nguyen, Chinh Chien, and Chinh Chien Nguyen. "Novel strategies to develop efficient titanium dioxide and graphitic carbon nitride-based photocatalysts." Doctoral thesis, Université Laval, 2018. http://hdl.handle.net/20.500.11794/30378.

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Afin de résoudre les problèmes environnementaux et énergétiques modernes, ces dernières années ont vu le développement de catalyseurs photocataytiques capables d’utiliser la lumière solaire. En effet, les possibles applications des semiconducteurs présentant des propriétés photocatalytiques dans les domaines de la production d’hydrogène ou la dégradation de polluants organiques ont généré un grand intérêt de la part de la communauté scientifique. Actuellement, les photocatalyseurs à base de dioxyde de titane (TiO₂) et de nitrure de carbone graphitique (g-C₃N₄) sont considérés comme les matéria
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Kumru, Baris [Verfasser], and Markus [Akademischer Betreuer] Antonietti. "Utilization of graphitic carbon nitride in dispersed media / Baris Kumru ; Betreuer: Markus Antonietti." Potsdam : Universität Potsdam, 2018. http://d-nb.info/1219078034/34.

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Yang, Xiaofang. "Development of hybrid surface mechanical attrition treatment : formation of carbon and nitride nanomaterials." Troyes, 2009. http://www.theses.fr/2009TROY0009.

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Un procédé dénommé SMAT (Surface Mechanical Attrition Treatment) a été développé pour la fabrication des structures nanocristallines à la surface des matériaux cristallins. Les propriétés mécaniques ainsi que les propriétés de diffusion avec une réactivité exceptionnelle sont nettement améliorées pour l’échantillon SMATé. Par conséquent, les métaux SMATés sont considérés pour la fabrication de nanomatériaux de carbone. Des échantillons en acier inoxydable (AISI 316L), Co, Ni et Ti SMATés ont été soumis au procédé CVD simple pour la synthèse des nanomatériaux de carbone. Les nanomatériaux de ca
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Zambon, Adrien. "Modèles chimiques du nitrure de carbone graphitique : lien structure-propriétés." Thesis, Université Grenoble Alpes (ComUE), 2015. http://www.theses.fr/2015GREAV024/document.

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Le nitrure de carbone graphitique (gCN) est un semi-conducteur organique ayant dernièrement attiré l'attention par sa capacité à photocatalyser la séparation de l'eau. Il a récemment été montré que le gCN était un polymère basé sur le cycle heptazine C6N7, mais son arrangement tridimensionnel reste encore très peu connu. En effet, sa faible solubilité empêche l'utilisation des techniques de caractérisation classiques, et le terme gCN recouvre en réalité une large gamme de composés différents, selon les conditions de synthèse utilisées (choix du précurseur, température…). L'obtention de modèles
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Adekoya, Oluwatobi. "Design and Synthesis of Graphitic Carbon Nitride (g-C3N4) Based Materials for Rechargeable Batteries." Thesis, Griffith University, 2020. http://hdl.handle.net/10072/401444.

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Carbon nitrides are a unique family of nitrogen-rich carbon materials with multiple beneficial properties for effective alkali metal ion transport/storage. Graphitic carbon nitride (g-C3N4) is considered the most viable member of the carbon nitride family because of its high nitrogen content, wide structure with several nitrogen-defect pore sites, ease of synthesis, affordability, and scalability. Also, g-C3N4 delivers a lithium ion battery (LIBs) theoretical capacity of 524 mAh/g unlike graphite which records only 327 mAh/g. However, due to the ineffective intercalation/deintercalation reacti
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Chiguma, Jasper. "Conducting polymer nanocomposites loaded with nanotubes and fibers for electrical and thermal applications." Diss., Online access via UMI:, 2009.

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Liljenberg, Marcus. "Poly(triazine imide) : Growing Larger Crystallites of CrystallineCarbon Nitride and Understanding Their Dissolution." Thesis, Uppsala universitet, Institutionen för kemi - Ångström, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-377151.

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Crystalline carbon nitride has been a hot topic for the last ten years because of reports claiming it could work as a photocatalyst for cheap water splitting, a catalyst for difficult reactions inorganic chemistry and the use as a potential two-dimensional semiconductor.The carbon nitride of interest in this project is poly(triazineimide) (PTI), which has a layered structure similar to graphite. Oneof the goals was to examine the synthesis parameters to try tounderstand what makes these crystallites grow. The material was primarily analyzed using scanning electron microscopy and powder x-ray d
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Wirnhier, Eva Antonie [Verfasser], and Wolfgang [Akademischer Betreuer] Schnick. "Solvothermal and Ionothermal Approaches to Carbon Nitride Chemistry / Eva Antonie Wirnhier. Betreuer: Wolfgang Schnick." München : Universitätsbibliothek der Ludwig-Maximilians-Universität, 2013. http://d-nb.info/1036143899/34.

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LELLO, BRUNO CAVALCANTE DI. "SYNTHESIS OF GALLIUM NITRIDE POWDER FROM GAS-SOLID REACTION USING CARBON AS REDUCING AGENT." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2002. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=4002@1.

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COORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOR<br>O nitreto de gálio (GaN) é um dos mais interessantes e promissores materiais para aplicação em dispositivos óptico- eletrônicos. GaN pode ser usado para a fabricação de diodos e lasers azuis. O desenvolvimento deste tipo de material está relacionado com três campos principais: 1) deposição de camadas de GaN cristalino; 2) produção de nano- filamentos a partir de reações confinadas no interior de nanotubos de carbono; 3) síntese de GaN em pó por diferentes métodos químicos. Recentemente, novas técnicas de deposição adotaram a
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Kayani, Asghar Nawaz. "Deposition and characterization of Diamond-like carbon films with and without hydrogen and nitrogen." Ohio University / OhioLINK, 2003. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1080935389.

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Bojdys, Michael Janus. "On new allotropes and nanostructures of carbon nitrides." Phd thesis, Universität Potsdam, 2009. http://opus.kobv.de/ubp/volltexte/2010/4123/.

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In the first section of the thesis graphitic carbon nitride was for the first time synthesised using the high-temperature condensation of dicyandiamide (DCDA) – a simple molecular precursor – in a eutectic salt melt of lithium chloride and potassium chloride. The extent of condensation, namely next to complete conversion of all reactive end groups, was verified by elemental microanalysis and vibrational spectroscopy. TEM- and SEM-measurements gave detailed insight into the well-defined morphology of these organic crystals, which are not based on 0D or 1D constituents like known molecular or sh
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45

羅時勳. "Field emission properties of carbon and carbon nitride films." Thesis, 2001. http://ndltd.ncl.edu.tw/handle/38080595835680656139.

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碩士<br>國立臺北科技大學<br>機電整合研究所<br>89<br>This study investigates the feasibility of DLC and C-N film as the FED candidate materials. Thin films deposited by R. F. Sputtering method, home-made nano-diamonds target, and inlet the C-N reaction gases. Results show that the film structure appeared column type, accompanied the vacuum pressure increasing the column structure deteriorating, and the film became flat, smooth, and dense finally. The DLC thin film of column structure conducted by hydrogen plasma etching, the column became thin, and the threshold electric field also became lower. Besi
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46

Corral, Erica Lorrane. "Single-walled carbon nanotube-silicon nitride composites." Thesis, 2005. http://hdl.handle.net/1911/18753.

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Colloidal processing methods were developed in order to disperse highly concentrated 1.0, 2.0, and 6.0 vol% single-walled carbon nantoube (SWNT)-Si 3N4 aqueous composite suspensions. Interparticle pair potentials were developed between individual Si3N4 particles and SWNT bundles by coating them with cationic surfactant molecules of cetyltrimethylammonium bromide (CTAB). Zeta potential, viscosity, and sedimentation measurements were conducted on SWNTs and Si3N4 particle suspensions in order to optimize the pH and amount of adsorbed CTAB. The composite suspension viscosity was pH sensitive and a
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47

Wu, Jing-Hsing, and 吳進興. "Synthesis and Characterization of Carbon Nitride Nanotube." Thesis, 2005. http://ndltd.ncl.edu.tw/handle/35414113969490095617.

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碩士<br>國立交通大學<br>應用化學系所<br>93<br>The thesis are divided into two parts. In the first part, we used 2,4,6-trichloro-1,3,5-triazine as the precursor to react with sodium which have been achieved by decomposing sodium hydrate at 623 K. At a low reaction temperature of 623 K, carbon nitride nanosphere、porous carbon nitride material and byproduct sodium chloride, would be produced. In the second part, we used porous anodic alumina oxide as the template. At 623 K, 2,4,6-trichloro-1,3,5-triazine reacted with the reactive template, which formed from thermally decomposing NaH on AAO, generated carbon ni
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Li, Jie-An, and 李捷安. "Visible-light responsive graphitic carbon nitride photocatalysts." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/2jyb9u.

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碩士<br>國立中興大學<br>環境工程學系所<br>106<br>A visible-light-driven graphitic carbon nitride/reduced graphene oxide/α-Sulfur composite (CNRGOS8) was synthesized as efficient photocatalysts for environmental applications. The photocatalytic reactivity of the fabricated CNRGOS8 was determined by the degradation of Rhodamine B (RhB) and tetracycline (TC). The effects of pH, mixed ratio of catalysts, dosage of photocatalyst were optimized, and the reaction kinetics and reaction pathway were studied. The results indicated the optimized pH values for RhB and TC degradation was 3 and 7, respectively. In additio
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Chen, Ying-Hsun, and 陳盈薰. "A Novel Procedure for Syntheses of Carbon and Carbon Nitride Nanotube." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/09180356823695541853.

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碩士<br>國立交通大學<br>應用化學系<br>91<br>The reaction between hexachlorocyclopentadiene (C5Cl6) and Na, which have been achieved by decomposing NaH thermally, can afford diversified morphologies of nano-sized carbon at 623 K, including urchin-like spheres, hollow spheres with cubic core as well as tubulate structures. The formation of cubic-cored hollow spheres and tubulate structure might be caused by NaCl by-product. The formation of diversified morphologies may be attributed to heterogeneous contact of the two reactants. Besides, we successfully developed a new strategy for formation of an reactive t
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Ho, Sin-Yi, and 何信逸. "Molybdenum Oxide / Graphitic Carbon Nitride Composites for Photocatalytic Reduction of Carbon Dioxide." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/6xmg7k.

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碩士<br>逢甲大學<br>化學工程學系<br>106<br>In this study, molybdenum oxides with various oxidation states were decorated on two-dimensional graphitic carbon nitride (gCN) to enhance the photocatlytic activity of CO2 reduction under visible light irradiation and to correlate the characteristics of photocatalysts to the efficiency of CO2 conversion. Part 1: Preparation and Properties of Molybdenum Trioxide / Graphitic Carbon Nitride Composite for Photocatalysis Molybdemum trioxide/graphitic carbon nitride was prepared by calcination and hydrothermal method. Ammonium molybdate tetrahydrate was the precursor
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