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Dissertations / Theses on the topic 'Graphene derivatives'

Author: Grafiati

Published: 6 September 2023

Last updated: 31 July 2025

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1

Nair, Rahul Raveendran. "Atomic structure and properties of graphene and novel graphene derivatives." Thesis, University of Manchester, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.527419.

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2

Eckmann, Axel. "Raman spectroscopy of graphene, its derivatives and graphene-based heterostructures." Thesis, University of Manchester, 2013. https://www.research.manchester.ac.uk/portal/en/theses/raman-spectroscopy-of-graphene-its-derivatives-and-graphenebased-heterostructures(fbb9d645-4fb3-4a75-b5c9-9a8483d6e9ac).html.

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In less than a decade of research, graphene has earned a long list of superlatives to its name and is expected to have applications in various fields such as electronics, photonics, optoelectronics, materials, biology and chemistry. Graphene has also attracted a lot of attention because its properties can be engineered either via intrinsic changes or by modification of its environment. Raman spectroscopy has become an ideal characterization method to obtain qualitative and quantitative information on these changes. This thesis investigates the possibility to change, supplement and monitor the

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3

Jasim, Dhifaf. "Graphene oxide derivatives for biomedical applications." Thesis, University of Manchester, 2016. https://www.research.manchester.ac.uk/portal/en/theses/graphene-oxide-derivatives-for-biomedical-applications(83c552dc-50f6-4771-95b4-d1aace0db493).html.

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Graphene-based materials (GBM) have recently generated great interest due to their unique two-dimensional (2D) carbon geometry, which confers exceptional physicochemical properties that hold great promise in many fields, including biomedicine. An understanding of how these novel 2D materials interact with the biological milieu is therefore fundamental for their development and use. Graphene oxide (GO) has been proven more biologically friendly than the highly hydrophobic pristine graphene. Therefore, the main aim of this study was to prepare well-characterised GO derivatives and test the hypot

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4

Treossi, Emanuele <1974&gt. "Chemical Production and Microelectronic Applications of Graphene and Nano-Graphene Derivatives." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2012. http://amsdottorato.unibo.it/4641/1/treossi_emanuele_tesi.pdf.

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Graphene and graphenic derivatives have rapidly emerged as an extremely promising system for electronic, optical, thermal, and electromechanical applications. Several approaches have been developed to produce these materials (i.e. scotch tape, CVD, chemical and solvent exfoliation). In this work we report a chemical approach to produce graphene by reducing graphene oxide (GO) via thermal or electrical methods. A morphological and electrical characterization of these systems has been performed using different techniques such as SPM, SEM, TEM, Raman and XPS. Moreover, we studied the interact

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Treossi, Emanuele <1974&gt. "Chemical Production and Microelectronic Applications of Graphene and Nano-Graphene Derivatives." Doctoral thesis, Alma Mater Studiorum - Università di Bologna, 2012. http://amsdottorato.unibo.it/4641/.

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Graphene and graphenic derivatives have rapidly emerged as an extremely promising system for electronic, optical, thermal, and electromechanical applications. Several approaches have been developed to produce these materials (i.e. scotch tape, CVD, chemical and solvent exfoliation). In this work we report a chemical approach to produce graphene by reducing graphene oxide (GO) via thermal or electrical methods. A morphological and electrical characterization of these systems has been performed using different techniques such as SPM, SEM, TEM, Raman and XPS. Moreover, we studied the interact

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6

MANGADLAO, JOEY DACULA. "Multifunctional Materials from Nanostructured Graphene and Derivatives." Case Western Reserve University School of Graduate Studies / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=case1448279230.

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7

VAZQUEZ, SULLEIRO MANUEL. "COVALENT FUNCTIONALIZATION OF GRAPHENE DERIVATIVES FOR NOVEL CARBON INTERFACES." Doctoral thesis, Università degli Studi di Trieste, 2018. http://hdl.handle.net/11368/2919820.

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Graphene is an allotrope of carbon material with a unique set of properties. Since it discovery in 2004 the number of publications about this material grew really fast. In the first chapter of this work, a general introduction of these topics, an overview of this material and relevant characterization techniques is described. Chemical functionalization of graphene is a topic of paramount importance, because it allows for the fine-tuning of material’s chemical and physical properties. An additional challenge in graphene functionalization is the surface modification in a controlled way, in ord

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8

Tsai, I.-Ling. "Magnetic properties of two-dimensional materials : graphene, its derivatives and molybdenum disulfide." Thesis, University of Manchester, 2014. https://www.research.manchester.ac.uk/portal/en/theses/magnetic-properties-of-twodimensional-materials-graphene-its-derivatives-and-molybdenum-disulfide(59dcba1b-332e-4a58-86f6-80ed56c7fdd1).html.

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Graphene, an atomically thin material consisting of a hexagonal, highly packed carbon lattice, is of great interests in its magnetic properties. These interests can be categorized in several fields: graphene-based magnetic materials and their applications, large diamagnetism of graphene, and the heterostructures of graphene and other two dimensional materials. In the first aspect, magnetic moments can be in theory introduced to graphene by minimizing its size or introducing structural defects, leading to a very light magnetic material. Furthermore, weak spin-orbital interaction, and long spin

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9

Hassan, Md Mahbub. "Synthesis of Graphene and its Derivatives for Electrochemical Energy Storage and Conversion Applications." Thesis, The University of Sydney, 2015. http://hdl.handle.net/2123/14069.

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A high yield aqueous phase exfoliation route for few layers graphene sheets (FLGs) was developed using expanded graphite as starting precursor. Afterward graphene derivatives such as activated graphene, graphene quantum dots, heteroatom doped graphene and graphene/polyaniline (PANI) nanocomposite were serially produced using this high quality FLGs as precursor materials. FLGs with high yield (90%) were first time synthesized by a very simple and quick (60 min) one step ultrasonication process. Incorporation of small portion (1 wt %) of this FLGs significantly enhanced the thermal and electric

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10

Wychowaniec, Jacek. "Designing nanostructured peptide hydrogels containing graphene oxide and its derivatives for tissue engineering and biomedical applications." Thesis, University of Manchester, 2018. https://www.research.manchester.ac.uk/portal/en/theses/designing-nanostructured-peptide-hydrogels-containing-graphene-oxide-and-its-derivatives-for-tissue-engineering-and-biomedical-applications(409e60a2-ed17-45bf-ab6c-b76ede937a67).html.

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Progress in biomedicine requires the design of functional biomaterials, in particular, 3-dimensional (3D) scaffolds. Shear thinning, β-sheet based peptide hydrogels have attracted wide interest due to their potential use in tissue engineering and biomedical applications as 3D functional scaffolds. The emergence of carbon nanomaterials has also opened the door for the construction of increasingly functional hybrid hydrogels built from nanofibres and graphene-based materials using non-covalent physical interactions. The relationship between peptide molecular structure and the formed hydrogel is

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11

Behof, William James. "Progress Towards the Synthesis of Novel Graphite Derivatives from a Solution Processable Poly-Cyano Precursor Polymer." NCSU, 2010. http://www.lib.ncsu.edu/theses/available/etd-12212009-134714/.

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In this thesis the synthetic progress towards the development of a novel potentially conducting ladder polymer, through the direct writing of a soluble precursor polymer, is presented. The proposed ladder polymer can be synthesized through three steps; the synthesis of a poly-cyano monomer for polymerization, the synthesis of a poly-cyano precursor polymer, and a one step cascading cyclization of a poly-cyano polymer. First addressed is the rather specific palladium catalyzed coupling conditions needed for a single C-C bond forming reaction of highly electron deficient aryl cyanides. The optim

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12

Muhundan, Arumugam. "Effects of using graphing calculators with a numerical approach on students' learning of limits and derivatives in an applied calculus course at a community college." [Tampa, Fla.] : University of South Florida, 2005. http://purl.fcla.edu/fcla/etd/SFE0001186.

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13

Tyborski, Christoph [Verfasser], Janina [Akademischer Betreuer] Maultzsch, Axel [Gutachter] Hoffmann, Ralph [Gutachter] Krupke, and Janina [Gutachter] Maultzsch. "Electronic and vibrational properties of diamondoid derivatives, graphite, and carbon nanotubes / Christoph Tyborski ; Gutachter: Axel Hoffmann, Ralph Krupke, Janina Maultzsch ; Betreuer: Janina Maultzsch." Berlin : Technische Universität Berlin, 2018. http://d-nb.info/1173247602/34.

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14

Nascimento, Leandro Fontanetti do. "Grafite funcionalizada em condições de Friedel-Crafts mediada por radiação de microondas: novo material para construção de eletrodos de pasta de carbono." Universidade de São Paulo, 2007. http://www.teses.usp.br/teses/disponiveis/59/59138/tde-04072007-151512/.

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A modificação e/ou a funcionalização de eletrodos têm por objetivos o desenvolvimento de métodos eficazes para a preparação de eletrodos quimicamente modificados (EQMs) que possam aliar melhorias em sua sensibilidade, seletividade e reatividade em relação aos eletrodos base. Entretanto, a estabilidade e a reprodutibilidade dos EQMs quanto ao processo de lixiviação dos modificadores precisam ser melhorados para que se possam obter eletrodos mais robustos com longo tempo de análise. Uma das possibilidades para se obter eletrodos mais estáveis é por meio de uma ligação estável do tipo covalente e

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15

Gonzalez, Vieyra Joel Abraham. "Estimation et Contrôle des Systèmes Dynamiques à Entrées Inconnues et Energies Renouvelables." Thesis, Ecole centrale de Lille, 2019. http://www.theses.fr/2019ECLI0012/document.

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De nos jours, les processus industriels se doivent d’être efficaces, en particulier au niveau de leur production et/ou consommation énergétique.Ce travail vise à améliorer l’efficacité des processus en analysant l’influence des perturbations sur leur comportement, de la phase de conception à la synthèse des contrôleurs/observateurs, ceci dans une approche intégrée.Le problème du Rejet de Perturbation est introduit ainsi que différents types de contrôles permettant d’atténuer et/ou rejeter ces perturbations. Le système de Barre de Torsion est présenté. Une loi de commande basée sur le concept d

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16

Bhattacharya, Amrita. "FIRST-PRINCIPLES STUDY OF FUNCTIONALIZED GRAPHENE AND ITS DERIVATIVES." Thesis, 2019. http://hdl.handle.net/10821/8322.

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In this thesis work, it has been studied the electronic properties of graphene and graphene like planar nano-sheets. It has been specifically tried to address the problem of band gap engineering in the native as well as functionalized derivatives of graphene and graphene-like planar nanomaterials. In chapter-3, we have solved the tight binding Hamiltonian of graphene. It shows that in a pristine graphene sheet, there is Dirac Cone like merging between the valence band and the conduction band. As a result of which the electrons are highly mobile and shows finite conductivity even at 0 K. Theref

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17

Chia-HaoTu and 凃嘉豪. "Growth and Characterization of Graphene and Its Derivatives." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/87093628030147137505.

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博士<br>國立成功大學<br>材料科學及工程學系<br>103<br>The aim of this research is to investigate the growth mechanism of the synthesis of graphene related materials by various methods. The graphene related materials include monolayer graphene snowflake, porous graphenic carbon film, composite of carbon nanorod on porous graphenic carbon film, and graphene nanowalls. First, chemical vapor deposition is employed to grow large single-domain graphene snowflakes (〉 0.5 mm2) on Cu foil by crossing numerous Cu grain boundaries underneath. The orientation of the graphene snowflake branches is preserved when crossin

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18

WANG, SHIH-HSUAN, and 王世軒. "Au/Graphene Derivatives Nanohybrids for Photo-thermal and Anti-bacterial Application." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/55178238828445741857.

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19

Kumar, Veeresh. "Graphene derivatives : structural properties and applications in sensing and liquid crystals displays." Thesis, 2017. http://localhost:8080/iit/handle/2074/7289.

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20

Huang, Jian Xiang, and 黃健翔. "Study of N-doped graphene grown on Cu(100) from pyridine derivatives by using Raman spectroscope." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/67623693295387242798.

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碩士<br>國立高雄師範大學<br>物理學系<br>103<br>ABSTRACT N-graphene shows different properties; for example, the Femi level is higher than Dirac point, band gap is not zero, and carbon is activated by neighbor nitrogen dopants which influences the spin density and charge distribution of carbon atoms. These make N-graphene promising for various applications such as semiconductors, solar cell, sensor, lithium ion batteries and electrocatalyst for fuel cell. Therefore, preparation of N-graphene growth is an important issue. In this work ,we study N-doped graphene grown from pyridine derivatives chemical vapor

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21

Akther, Nawshad. "Development of Thin-Film Composite Membranes Incorporated With Graphene Oxide and Derivatives for Forward Osmosis Processes." Thesis, 2020. http://hdl.handle.net/10453/149327.

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University of Technology Sydney. Faculty of Engineering and Information Technology.<br>Graphene oxide (GO) has been used to improve the anti-fouling and separation performance of the thin-film composite (TFC) membranes. Nonetheless, very few studies provided an in-depth explanation of the possible interaction between GO and polymer matrix that alter the membrane properties and performance. Thus, the overall aim of this study was to develop high-performance GO-based polyamide (PA) TFC forward osmosis (FO) membranes by systematically investigating the effect of GO and its derivatives on the modi

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22

Maiti, Subhasish. "Graphene derivatives sandwiched with porous polyvinylidene fluoride based thin film composite membranes for effective water remediation." Thesis, 2022. https://etd.iisc.ac.in/handle/2005/5751.

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Safe drinking water for all is perhaps one of the prime nexus of the 21st century and one of the prime sustainable development goals. Around 1.2 billion people still lack access to safe potable water, while around 2.6 billion people still lack access to proper sanitation. Due to the rapid contamination of conventional freshwater aquifers and a decrease in the groundwater table, there is an urgent need to re-use the unconventional sources and remediate the contaminated aquifers. In this context, re-using desalinated water for practical applications seems a feasible solution since nearly 71 % of

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23

Huang, Jhong-Yi, and 黃仲逸. "Inverted planar perovskite solar cells based on derivative of Graphene oxide and reduced-Graphene oxide Electrode." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/38f7ab.

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碩士<br>國立交通大學<br>應用化學系碩博士班<br>105<br>Graphene oxide (GO) and its derivatives as the promising hole-extracting layer (HEL) are used for inverted planar heterojunction (PHJ) perovskite solar cells(PSC). The effect of GO reduction conditions on hole extraction properties is studied. We synthesized reduced graphene oxides (rGO) of three types – rGO-NH, rGO-BH, rGO-HBS – via reduction of GO with reducing agents – hydrazine, sodium borohydride and 4-hydrazino- benzene sulfonic acid – as HEL. The devices fabricated by reduced graphene oxides show the higher photovoltaic performance attaining power con

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24

Candrawan, Julius, and 陳健輝. "Selective Electrochemical Detection of Metal Ions by Porphyrin Derivative/Graphene Derivative Thin Films on ITO Electrode." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/31816139651614706594.

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碩士<br>國立臺灣科技大學<br>化學工程系<br>102<br>Nanotechnology has been extensively utilized in many field of applications, such as sensors. This research reported about preparation of porphyrin derivative/graphene derivative composite and their sensor application. Porphyrin derivative used in this research was tetrakis(4-carboxyphenyl)porphyrin (TCPP), whereas graphene derivatives used were graphene oxide (GO) and reduced graphene oxide (RGO). It began with a synthesis of composite (GO-TCPP) by non-covalent strategy through aromatic ??{? stacking and a synthesis of reduced graphene oxide through chemical r

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25

Chang, Ya-Ming, and 張雅茗. "Investigation on the pervaporation performance of PVA/Graphene derivative hybrid membrane." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/36953089067316653065.

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碩士<br>中原大學<br>化學工程研究所<br>104<br>The hydrophilic graphene oxide (GO) is generally used to be nanocomposite materials by mixing it with polymer. But large amounts of strong acid and oxidants during GO synthesis produces environmental pollutants. In this study, we prepared an environmentally friendly nanocomposite materials through modified graphene(mGr) with dopamine for dehydration process of ethanol. PVA-mGr hybrid membranes were fabricated for pervaporation application by adding mGr in the PVA solution. The physicochemical properties, structure, and hydrophilicity of the fabricated membranes

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26

Teck-HouTiong and 張德豪. "Application of graphene and its derivative for molecularsensing by Surface Enhanced Raman Scattering." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/69821825274110404521.

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碩士<br>國立成功大學<br>微電子工程研究所碩博士班<br>101<br>We demonstrate the suppression of gold-nanoparticle induced surface-enhanced Raman scattering (SERS) by single layer graphene(Gr)on gold nanoparticles (AuNPs). Although electric fields perpendicular to Gr surface can easily penetrate through Gr,electric fields near the surface of a conductive Gr and in directions parallel to the substrate surface are weak, resulting in measured SERS signal intensity from molecules adsorbed on the Gr surface to be suppressed. The high resistivity of the Gr after subjecting to remote plasma hydrogenation allows plasmonic co

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27

Tai, Ching-Ting, and 戴晶婷. "Fabrication and application of a-Ni(OH)2/graphene derivative and a-Ni(OH)2/exfoliated montmorillonite composites and their hybrids for high-performance supercapacitor electrodes." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/53361445802566999606.

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碩士<br>國立臺灣大學<br>材料科學與工程學研究所<br>105<br>In recent years, supercapacitor has attracted significant attention by its superior performance such as high specific power, long lifecycle, short charging time, and environment-friendly. To improve the specific energy, rate capability, and cycle stability of electrode materials for supercapacitor, in this thesis a facile one-step solution precipitation method was conducted to prepare 3D structural Al-Ni(OH)2 composites in a-phase. The composites are composed of Al-Ni(OH)2 and 2D supporting additives (graphene oxide, reduced graphene oxide, modified graphe

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28

Ke, Yi-Chun, та 柯怡君. "Part-1 Nanogold particle-fabricated graphene oxide derivative for tissue engineering application;Part-2 To evaluate the delivery capacity of gold nanoparticles conjugated with stromal cell derived factor – 1α on Mesenchymal stem cells". Thesis, 2017. http://ndltd.ncl.edu.tw/handle/gxkb7h.

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