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Dissertations / Theses on the topic 'Reduced graphene oxide'

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Published: 4 June 2021
Last updated: 26 July 2025

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1

Nyangiwe, Nangamso Nathaniel. "Graphene based nano-coatings: synthesis and physical-chemical investigations." Thesis, UWC, 2012. http://hdl.handle.net/11394/3237.

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Magister Scientiae - MSc<br>It is well known that a lead pencil is made of graphite, a naturally form of carbon, this is important but not very exciting. The exciting part is that graphite contains stacked layers of graphene and each and every layer is one atom thick. Scientists believed that these graphene layers could not be isolated from graphite because they were thought to be thermodynamically unstable on their own and taking them out from the parent graphite crystal will lead them to collapse and not forming a layer. The question arose, how thin one could make graphite. Two scienti
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2

Dahlberg, Tobias. "The first order Raman spectrum of isotope labelled nitrogen-doped reduced graphene oxide." Thesis, Umeå universitet, Institutionen för fysik, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-116699.

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The topic of this thesis is the study of nitrogen functionalities in nitrogen-doped reduced graphene oxide using Raman spectroscopy. Specifically, the project set out to investigate if the Raman active nitrogen-related vibrational modes of graphene can be identified via isotope labelling. Previous studies have used Raman spectroscopy to characterise nitrogen doped graphene, but none has employed the method of isotope labelling to do so. The study was conducted by producing undoped, nitrogen-doped and nitrogen-15-doped reduced graphene oxide and comparing the differences in the first-order Rama
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3

Kim, K. B., J. G. Kim, H. K. Kim, et al. "Nanocomposites of Reduced Graphene Oxide for Energy Storage Applications." Thesis, Sumy State University, 2012. http://essuir.sumdu.edu.ua/handle/123456789/35266.

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A well-crystallized and nano-sized Metal oxide/reduced graphene oxide composite material for lithium ion batteries has been successfully synthesized. The nano-sized metal oxide particles were evenly dispersed on the reduced graphene oxide template without any agglomeration, which allows the inherent high active surface area of individual metal oxide nano-particles in the composite. These unique structural and morphological properties of metal oxide on the highly conductive reduced graphene oxide sheets in the composite enable achieving the high specific capacity, and excellent high rate c
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4

Al-Nafiey, Amer Khudair Hussien. "Reduced graphene oxide-based nanocomposites : synthesis, characterization and applications." Thesis, Lille 1, 2016. http://www.theses.fr/2016LIL10009/document.

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Nous avons synthétisé avec succès ces nano-composés (rGO/Arg-Ag NPs, rGO-Ni NPs and rGO-Co3O4NPs) et les avons caractérisés par de nombreuses techniques, XPS, SEM, TEM, FTIR, Raman, UV-Vis et TGA. Les analyses montrent que ces nano-composés à base de graphène ont des propriétés excellentes et une grande stabilité. Utilisés comme catalyseurs dans des applications environnementales, ils réduisent efficacement le 4-nitrophenol en 4-aminophenol ainsi que les colorants à forte adsorption et le chrome (VI) présents dans les eaux usées<br>We successfully obtained these nanocomposites (rGO/Arg-Ag NPs,
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Chari, Tarun. "Reduced graphene oxide based transparent electrodes for organic electronic devices." Thesis, McGill University, 2011. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=104534.

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This thesis explores the utility of reduced graphene oxide and hybrid reduced graphene oxide/single walled carbon nanotubes as a transparent electrode. Graphene oxide was fabricated using the modified Hummers method, transferred to arbitrary substrates by a vacuum filtration method, and reduced chemically and thermally thus creating thin, large area reduced graphene oxide films. Films were characterized electrically, optically, spectroscopically, and topographically. Raman and X-ray photoelectron spectroscopy techniques were utilized to ensure successful fabrication of reduced graphene oxide.
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6

Joung, Daeha. "Electronic Transport Investigation of Chemically Derived Reduced Graphene Oxide Sheets." Doctoral diss., University of Central Florida, 2012. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/5332.

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Reduced graphene oxide (RGO) sheet, a chemically functionalized atomically thin carbon sheet, provides a convenient pathway for producing large quantities of graphene via solution processing. The easy processibility of RGO sheet and its composites offer interesting electronic, chemical and mechanical properties that are currently being explored for advanced electronics and energy based materials. However, a clear understanding of electron transport properties of RGO sheet is lacking which is of great significance for determining its potential application. In this dissertation, I demonstrat
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7

SAVAZZI, FILIPPO. "Computational study of reduced Graphene Oxide properties for membrane applications." Doctoral thesis, Politecnico di Torino, 2021. http://hdl.handle.net/11583/2903478.

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8

Ammar, Ali M. "REDUCTION OF GRAPHENE OXIDE USING MICROWAVE AND ITS EFFECT ON POLYMER NANOCOMPOSITES PROPERTIES." University of Akron / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=akron1533123263694685.

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9

Lu, Xiaoling [Verfasser]. "Reduced Graphene Oxide Biosensors for Prostate Cancer Biomarker Detection / Xiaoling Lu." Gießen : Universitätsbibliothek, 2019. http://d-nb.info/1189582759/34.

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10

Wu, Zhenkun. "Metal-reduced graphene oxide for supercapacitors and alternating current line-filters." Diss., Georgia Institute of Technology, 2015. http://hdl.handle.net/1853/53941.

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We design a facile approach to investigate the role benzene derivatives play in the capacitance enhancement of graphene-based supercapacitors. The main reason is attributed to the pseudocapacitance of the aromatic molecules rather than the former one. Meanwhile, we find that the para and ortho substituted benzene derivatives contribute much more than the meta substituted ones. In addition, we fabricate an all-solid-state flexible MSC based on metal-reduced GO. The as-fabricated MSC shows high areal capacitance and excellent reliability, which makes it a promising energy storage candidate for
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11

Bai, Xiaoyun. "Development of reduced graphene oxide based nanocomposities for electrochemical biosensing applications." HKBU Institutional Repository, 2014. https://repository.hkbu.edu.hk/etd_oa/228.

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The modification of electrodes is always an important task in electrochemical detection of electroactive and biological molecules. Chemically modified electrodes can offer improved selectivity and sensitivity for the target analyte, which greatly enhance the electrode performance. Various materials such as conducting polymers, metal nanoparticles and carbon nanomaterials have been exploited and widely used for the modification of electrodes. Electrochemical or spontaneous deposition, electrostatic adsorption, layer-by-layer self assembly and covalent binding have also been developed for electr
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Salimian, Maryam. "Advances in multifunctional nickel/reduced graphene oxide nanocomposites, synthesis and characterization." Doctoral thesis, Universidade de Aveiro, 2018. http://hdl.handle.net/10773/23709.

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Doutoramento em Engenharia Mecânica<br>O grafeno é constituído por uma monocamada de átomos de carbono dispostos numa espécie de rede hexagonal perfeita. Devido às suas propriedades extraordinárias, este nanomaterial tem suscitado um grande interesse tanto no setor científico como no industrial. A este respeito, a investigação em torno do grafeno mostrou um aumento exponencial em áreas tão diferentes como a energia, biomedicina, eletrónica, entre outras. O óxido de grafeno (GO), um dos derivados de grafeno, foi considerado como um substrato interessante para o desenvolvimento de nanocomposito
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13

Leve, Zandile Dennis. "Determination of paracetamol at the electrochemically reduced graphene oxide-metal nanocomposite modified pencil graphite (ERGO-MC-PGE) electrode using adsorptive stripping differential pulse voltammetry." University of Western Cape, 2020. http://hdl.handle.net/11394/7350.

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>Magister Scientiae - MSc<br>This project focuses on the development of simple, highly sensitive, accurate, and low cost electrochemical sensors based on the modification of pencil graphite electrodes by the electrochemical reduction of graphene oxide-metal salts as nanocomposites (ERGO-MC-PGE; MC = Sb or Au nanocomposite). The electrochemical sensors ERGO-Sb-PGE and ERGO-Au-PGE were used in the determination of paracetamol (PC) in pharmaceutical formulations using adsorptive stripping differential pulse voltammetry. The GO was prepared from graphite via a modified Hummers’ method and characte
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14

Wang, Zegao, Pingjian Li, Yuanfu Chen, et al. "Pure thiophene–sulfur doped reduced graphene oxide: synthesis, structure, and electrical properties." Royal Society of Chemistry, 2014. https://tud.qucosa.de/id/qucosa%3A36294.

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Here we propose, for the first time, a new and green ethanol-thermal reaction method to synthesize highquality and pure thiophene–sulfur doped reduced graphene oxide (rGO), which establishes an excellent platform for studying sulfur (S) doping effects on the physical/chemical properties of this material. We have quantitatively demonstrated that the conductivity enhancement of thiophene–S doped rGO is not only caused by the more effective reduction induced by S doping, but also by the doped S atoms, themselves. Furthermore, we demonstrate that the S doping is more effective in enhancing conduct
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15

Kushch, S. D., N. S. Kuyunko, A. A. Arbuzov, N. N. Dremova, and V. E. Muradyan. "Pt supported on reduced graphite oxide catalysts for H2 activation." Thesis, Sumy State University, 2013. http://essuir.sumdu.edu.ua/handle/123456789/35570.

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Platinum catalysts of H2 activation with average size ≤2.0 nm were prepared in a base of reduction conversion of graphene oxide. A low few-layered carbon nanomaterial was prepared by thermoexpansion and annealing of graphene oxide. The uniformly dispersed Pt nanoparticles were supported on two-dimension graphene flat material by the use of pyridine or polyethyleneimine in alkaline (pH10) media as chelating agent modificating both metal precursor H2PtCl6 and support. Vacancies in carbon material formed as a result of thermoexpansion and annealing of graphite oxide probablly serve as anchor gro
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16

Morselli, Serena. "Thermally reduced Graphene Oxide: a well promising way to transparent flexible electrodes." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2015. http://amslaurea.unibo.it/9324/.

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L'elaborato tratta dell'ottimizzazione del processo di riduzione termica dell'ossido di grafene in termini di conduttività e trasmittanza ottica. Definiti gli standard di deposizione tramite spin-coating e riduzione termica, i film prodotti vengono caratterizzati tramite XPS, AFM, UPS, TGA, ne vengono testate la conducibilità, con e senza effetto di gate, e la trasmittanza ottica, ne si misura l'elasticità tramite spettroscopia di forza, tutto al fine di comprendere l'evoluzione del processo termico di riduzione e di individuare i parametri migliori al fine di progredire verso la produzione di
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17

Chunder, Anindarupa. "FABRICATION OF FUNCTIONAL NANOSTRUCTURES USING POLYELECTROLYTE NANOCOMPOSITES AND REDUCED GRAPHENE OXIDE ASSEMBLIES." Doctoral diss., University of Central Florida, 2010. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/3082.

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A wide variety of nanomaterials ranging from polymer assemblies to organic and inorganic nanostructures (particles, wires, rods etc) have been actively pursued in recent years for various applications. The synthesis route of these nanomaterials had been driven through two fundamental approaches -  Top down and  Bottom up . The key aspect of their application remained in the ability to make the nanomaterials suitable for targeted location by manipulating their structure and functionalizing with active target groups. Functional nanomaterials like polyelectrolyte based multilayered thin film
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18

Yarmolenko, O. V., S. A. Baskakov, Y. M. Shulga, P. I. Vengrus, and O. N. Efimov. "Supercapacitors Based on Composite Polyaniline / Reduced Graphene Oxide with Network Nanocomposite Polymer Electrolyte." Thesis, Sumy State University, 2013. http://essuir.sumdu.edu.ua/handle/123456789/35510.

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The paper describes investigation on new types of supercapacitors based on composite polyani-line/reduced graphene oxide with network nanocomposite polymer electrolyte. Its prototypes are all solid state. The new network polymer electrolytes based on polyethylene glycol diacrylate and nanoparticle SiO2 was synthesized by reaction of radical polymerization in the environment of liquid organic electrolyte. The work is aimed to obtain a polymer electrolyte that is compatible with the electrode materials of superca-pacitors. For these purposes the method of FTIR spectroscopy, a.c. electrochemical
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Modarres, Mohammad Hadi. "Reduced graphene oxide nanoparticle hybrids and their assembly for lithium-ion battery anodes." Thesis, University of Cambridge, 2018. https://www.repository.cam.ac.uk/handle/1810/277144.

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Lithium-ion batteries (LIBs) are an integral part of consumer electronic devices and electric vehicles. There is a growing need for LIBs with higher capacity, rate performance and cycling stability. At the anode electrode these challenges are being addressed for instance by utilising materials with higher theoretical capacity compared to graphite (372 mAh/g) or by optimising the morphology of materials through nanostructuring of the electrode. In this thesis the former is investigated by synthesising a reduced graphene oxide (rGO) tin sulphide (SnS2) hybrid, and the latter by self-assembly of
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Konkena, Bharathi. "Aqueous Dispersions of Graphene Oxide, Reduced Graphene Oxide and Functionalized Graphene Oxide." Thesis, 2014. http://etd.iisc.ac.in/handle/2005/3035.

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Graphene sheets, one atom thick, two dimensional layers of carbon atoms, have gained enormous importance over the past few years due to their unique attributes - high electronic, thermal conductivities and exceptional mechanical strength. Chemical reduction of graphene oxide (GO) has been considered as a viable route for large scale production of graphene sheets. The reduced graphene oxide (r -GO) sheets although their conductivities are comparatively lower than that of graphene are nevertheless versatile material for applications in thin films and composites. An important consideration in the
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Konkena, Bharathi. "Aqueous Dispersions of Graphene Oxide, Reduced Graphene Oxide and Functionalized Graphene Oxide." Thesis, 2014. http://hdl.handle.net/2005/3035.

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Graphene sheets, one atom thick, two dimensional layers of carbon atoms, have gained enormous importance over the past few years due to their unique attributes - high electronic, thermal conductivities and exceptional mechanical strength. Chemical reduction of graphene oxide (GO) has been considered as a viable route for large scale production of graphene sheets. The reduced graphene oxide (r -GO) sheets although their conductivities are comparatively lower than that of graphene are nevertheless versatile material for applications in thin films and composites. An important consideration in the
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22

Jewell, Ira. "Electrical characterization of thermally reduced graphite oxide." Thesis, 2010. http://hdl.handle.net/1957/16436.

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This thesis describes the transport properties observed in thermally treated graphite oxide (GO), which holds promise as an economical route to obtaining graphene. Graphene is a material consisting of a single atomic plane of carbon atoms and was first isolated as recently as 2004. Several isolation techniques have been investigated, including mechanical exfoliation, chemical vapor deposition, and the reduction (by various methods) of chemically synthesized graphite oxide. Two fundamental questions are pursued in this work. The first is concerned with the maximum electrical conductivity that c
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史博文. "Surfactant Modified Reduced Graphene Oxide Supercapactiors." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/73800505814063503834.

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碩士<br>國立高雄應用科技大學<br>模具工程系<br>105<br>Reduced graphene oxide can be wrapped with surfactant such as CTAB or SDS to reduce the restack effect between graphene layers and hence increasing the capacitance and energy density of the materials. However, if we can increase the distance between the reduced graphene oxide layers, more ions or larger ions can move in and out the vacancies easier. To achieve this, the reduced graphene oxide was wrapped with ionic surfactant such as CTAB or SDS. The Br anion of the CTAB and the Na cation of the SDS surfactant can be replaced by the larger anion and cation o
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Khan, Mustaque Ali. "Efficient Photodetectors Based on Reduced Graphene Oxide." Thesis, 2016. https://etd.iisc.ac.in/handle/2005/4379.

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Chapter 1: In chapter 1, we have presented a brief introduction on photodetector and its various applications. Chapter 2: Chapter 2 is the discussion about experimental methods and characterization tools. In this chapter, we have briefly discussed the experimental methods we have used for preparation of our materials. Then, we have discussed the characterization techniques we have used to characterize our prepared materials. Chapter 3: We have prepared graphene oxide thin film by spin coating. Then, we have reduced it by hydrazine vapour to obtain reduced graphene oxide thin film. We hav
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Liou, Hong-Ming, and 劉宏明. "Thermoelectric Transport Measurements of Reduced Graphene Oxide." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/65637432223925865239.

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碩士<br>國立交通大學<br>電子物理系所<br>103<br>Graphene and reduced graphene oxide device are fabricated using standard electron-beam lithography and thermal evaporation. The device resistance is measured in the temperature range from 200 to 300 K. The result shows that electron transport in reduced graphene oxide can be described by Mott’s two-dimensional variable range hopping. By applying back gate voltage, both graphene and reduced graphene oxide show ambipolar behavior in field effect responses. The sign of thermoelectric power (TEP) of graphene and reduced graphene oxide changes across the charge neut
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Li, Ya-Chi, and 李雅琪. "Electron transport in thermally reduced graphene oxide." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/60299391989619357764.

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碩士<br>國立交通大學<br>電子物理系所<br>99<br>In this study, transport properties of thermally reduced-graphene oxide (r-GO) nanodevices have been investigated. Graphene oxide sheets are made via a modified Hummers’ method and are stocked in de-ionized water. Graphene oxide sheets are then deposited on SiO2 (300 nm)/Si substrates with pre-patterned alignment marks and micrometer scale electrodes. The Si substrate is taken as a back gate electrode. Prior to electron beam lithography process, as-deposited sheets are subjected to annealing at 400℃ for 24 h in order to remove oxygen functional groups and to res
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Tzu-YangLin and 林子揚. "Preparation and application of iron oxide/ reduced graphene oxide nanocomposites." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/jzz2ce.

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碩士<br>國立成功大學<br>化學工程學系<br>102<br>This thesis concerns the preparation of iron oxide/reduced grapheme oxide nanocomposites and their applications in adsorption and supercapacitor. For the first part, an arginine-capped nanocomposite of iron oxide nanoparticles and reduced graphene oxide (iron oxide/rGO) has been synthesized as a magnetic nano-adsorbent for the removal of acid dyes AO12 and AG25 via a facile one-step green route with L-arginine as the reducing agent and capping agent. It was quite efficient for the adsorption of acid dyes due to the electrostatic interaction and the van der Waal
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Jun-Wang and 王駿. "Study of large-area reduced graphene oxide film." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/9x9sw9.

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碩士<br>國立臺灣科技大學<br>機械工程系<br>103<br>In recent years, the research and application of graphene becoming more and more popular. This two-dimensional material exhibits amazing properties on the application of all aspects, some scholars even say that graphene will change the way we live. This study used PVD sputtering collocation high-temperature oxidation and high-temperature vacuum treatment to manufacture graphene. After trying different films thickness, oxidative induction time and high-temperature vacuum reducing, then use Raman spectroscopy, Thermogravimetry Analysis(TGA) and Atomic Force M
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YAN, KE-DUN, and 嚴克敦. "Microwave Absorbing Properties of Reduced Graphene Oxide Papers." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/qwqmjv.

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Wang, Guan-Ying, and 王冠穎. "Preparation of Thin Film with Reduced Graphene Oxide." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/f6fc74.

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碩士<br>逢甲大學<br>化學工程學系<br>107<br>In order to improve the interface situation that might be encountered in producing multi-layer structured device, a method using graphene oxide (GO) undergoes modification, adsorption and chemical reduction of was proposed in this study to prepare electrically conducting graphene thin films. Modified GO is able to enhance the adhesion between adjacent two layers of different materials when it is deposited as an interfacial layer. First we used a large amount of oil-water interface to graft long-chain alkyl groups to one side of GO by amidaion reaction of the -COO
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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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Alazmi, Amira. "Rational Design of (Reduced) Graphene Oxide Materials and Their Applications." Diss., 2018. http://hdl.handle.net/10754/629892.

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The Graphene term has become synonymous with layered carbon sheets having thicknesses ranging from the monolayer to stacks of about ten layers. For bulk volume production, graphite chemical exfoliation is the preferred solution. For this reason, much interest has congregated around different processes to oxidize and peel off graphite to obtain graphene oxide (GO) and its counterpart, reduced GO (rGO). The community at-large has quickly adopted those processes and has been intensively using the resulting (r)GO as active materials for a myriad of applications. Yet, partially given the
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Yang, Yu-Jhe, and 楊育哲. "Electrical and Optical Properties of Plasma Reduced Graphene Oxide." Thesis, 2013. http://ndltd.ncl.edu.tw/handle/9454vk.

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碩士<br>國立中興大學<br>光電工程研究所<br>101<br>In recent years, graphene is a unique two-dimensional structure with good electrical conductivity and thermal conductivity. However graphene oxide has attracted considerable attention because it has tunable surface chemical properties, electrical and optical properties. Many reduction approaches have been developed and most of reduction processes have abundant defects. In study, CH4 plasma treatment could reduce the graphene oxide and help defects repair. So we studied plasma reduction and decreased defects at the same time by the three kinds of the gas plasma
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Kai-ChihHsu and 許凱智. "Preparation and applications of nanoparticles-deposited reduced graphene oxide." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/60109120605446246625.

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博士<br>國立成功大學<br>化學工程學系<br>103<br>Recently, graphene has emerged as a key material or support for the various applications owing to its excellent physical, chemical and electronic properties. As the derivatives of graphene, graphene oxide (GO) and reduced graphene oxide (rGO) are widely used as starting materials for the fabrication of composites due to their low-cost property, large scale production and easy functionalization owing to the many reactive oxygenated functional groups. This dissertation includes four parts: 1. Green synthesis and synergistic catalytic effect of Ag/reduced graphen
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Chen, Yu-Ting, and 陳昱廷. "Reduced techniques of graphene oxide developed using electric energy." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/06682423200188332549.

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碩士<br>國立臺灣師範大學<br>機電工程學系<br>104<br>In this study, we present a novel method that uses electric energy to turn graphene oxide into reduced grpahene oxide. The electric energy which contains the arc discharge and atmospheric plasma two methods, both methods have an advantage of rapid heating, high energy and other characteristics. It is suitable for reduce graphene oxide. First, we used the present study Improved Hummers method for preparing graphene oxide. the graphene oxide prepared ID ratio IG is 0.77, carbon to oxygen ratio is 0.232, and the resistance is 280 MΩ. Moreover, the homemade of gr
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Wang, Shu-Wei, and 王書瑋. "Transport in chemically reduced graphene oxide and GaP1-xSbx." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/55462361971208580243.

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碩士<br>國立臺灣大學<br>物理研究所<br>99<br>This thesis is focused on the electronic properties and the transport mechanism of carriers in nanostructures. It consists of the following two parts: 1. The transport in chemically reduced graphene oxide (rGO): The first part of this study was focused on the transport behavior of carriers in rGO films over a temperature (T) range between 4.5 K and 296 K. Both variable range hopping (VRH) and thermally-activated transports were reported in previous studies. An Arrhenius-type electron transport behavior rather than a VRH one is discovered from our rGO samples al
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Hsu, Chia-Wen, and 許嘉紋. "Boron doped reduced graphene oxide for capacitive deionization application." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/ptrnbk.

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碩士<br>國立交通大學<br>環境工程系所<br>106<br>In present, the shortage of clean freshwater and pollution had poses a critical issue to human habitat on this planet. Here in, capacitive deionization (CDI), an electrochemical water treatment technology has been implemented with the purpose to remove the inorganic ions from the water. CDI holds the promise not only available for ion removal but also consuming low energy consumption, easy operation and act as renewable electrodes. In this study, boron-doped reduced graphene oxide (B-rGO) was synthesized from microwave-assisted hydrothermal method and been sele
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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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Tsai, I.-Chen, and 蔡宜真. "Environmental applications of 3D reduced graphene oxide modified electrodes." Thesis, 2019. http://ndltd.ncl.edu.tw/cgi-bin/gs32/gsweb.cgi/login?o=dnclcdr&s=id=%22107NCHU5087032%22.&searchmode=basic.

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碩士<br>國立中興大學<br>環境工程學系所<br>107<br>With the growing usage, antibiotics have been found in the recipient environment and been listed as potential emerging contaminants. Sulfamethoxazole, a representative sulfonamide antibiotic, is one of the most commonly used antibiotics. The increase in the release and accumulation of the unconsumed antibiotics in the effluents and aquatic environment necessitates the development of real-time and in-situ determination technique. In the present work, gold/graphene-based modified electrodes, which showed high selectivity, high sensitivity, and high stability, we
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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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Lee, Iping, and 李依平. "NO2 Gas Sensor Based on Polymer-exfoliated Graphene Nanoplatelets and Reduced Graphene Oxide." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/3q79e9.

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Lin, Jia-Hui, and 林嘉暉. "Synthesis and characterization of Iron Oxide (IO)/FePt/ reduced graphene oxide (rGO) nanocomposites." Thesis, 2016. http://ndltd.ncl.edu.tw/handle/5a8nw9.

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碩士<br>國立臺北科技大學<br>製造科技研究所<br>104<br>In this study, FePt/reduced graphene oxide (rGO) nanocomposies have been synthesized using a chemical reduction. Triethylene glycol (TEG) as both solvent and reductant, whereas graphene oxide (GO) nanosheets as a supported of FePt nanoparticles. And the precursor of Iron Oxide (IO) have been added at different times in to the synthesis of FePt/rGO nanocomposite to prepared the different structures of Iron Oxide/FePt/rGO nanocomposites. The microstructure, composition, surface morphology and magnetic property of this nanocomposites are methodically character
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43

Chang, Yun-tsung, and 張允聰. "Electrochemical Supercapacitor Behaviors of Nano Iron Oxide/Polyaniline/Reduced Graphene Oxide Hybrid Materials." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/46456457907088600812.

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碩士<br>大同大學<br>材料工程學系(所)<br>103<br>Integrated supercapacitors with extended operation voltage are important for high energy density storage devices. Supercapacitors, store energy using either ion adsorption (electrochemical double layer capacitors) or fast surface redox reactions (pseudo-capacitors). They can complement or replace batteries in electrical energy storage and harvesting applications, when high power delivery or uptake is needed. If we integrate the two kinds of supercapacitors, it will enhance the properties of supercapacitors. In this study, we coating the polyaniline on the redu
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Tang, Fa-Shih, and 湯發時. "Synthesis and characterization of In2O3 nanowires/reduced graphene oxide heterostructures." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/b3m447.

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碩士<br>國立東華大學<br>材料科學與工程學系<br>105<br>A vapor transport process was used to grow indium oxide nanowires on gold catalyzed graphene oxide surfaces by vapor-liquid-solid (VLS) mechanism and graphene oxide surfaces by vapor-solid (VS) mechanism, respectively. The samples were characterized by various characterization techniques and their growth mechanism were discussed. Both X-ray diffraction (XRD) and transmission electron microscopy (TEM) results show that the as-grown indium oxide nanowires are face centered cubic FCC with [100] growth direction. The graphene oxide was reduced to reduced graphen
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Wong, Jing-ya, and 翁靖雅. "Applications of nitrogen-doped reduced graphene oxide on electrochemical capacitor." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/06898999496283423889.

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碩士<br>國立臺灣科技大學<br>化學工程系<br>102<br>This study explores the capacity of nitrogen doped reduced graphene oxide (N-doped rGO) in the asymmetric electrolyte [EMI][TFSI]. We employ the Staudenmaier method to exfoliate and reduce the graphene oxide, and find the sample of N-doped rGO owns a surface area, higher than 1100?aC undoped rGO. Hence, the capacitor investigation focuses on how to make most of the electrochemical window of [EMI][TFSI] with N-doped rGO. The electrochemical window of [EMI][TFSI] is measured between -1.65 and +2.6 V (vs. RHE) with platinum electrodes. Another window rarely ment
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Li, Jin-An, and 李晉安. "Synthesis and Characterization of Au-Pd/Reduced Graphene Oxide Electrocatalysts." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/54396454619749949834.

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碩士<br>大同大學<br>材料工程學系(所)<br>103<br>In a direct formic acid fuel cell system, the carbon monoxide produced during the oxidation of formic acid will adsorb on the surface of palladium catalyst and poisoning palladium, also formic acid may leaching and dissolving palladium, leads to decrease the electro-catalytic activity. Previous studies indicated the nano-gold-palladium solid solution can inhibit CO poisoning and prevent the leaching of palladium that may increase electrocatalytic activity and lifetime. This study compared two different methods to reduce gold-palladium alloy on reduced graphen
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Ya-ChiKo and 柯雅淇. "Preparation and application of Ag/ZnO/reduced graphene oxide nanocomposite." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/03458305987687493846.

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碩士<br>國立成功大學<br>化學工程學系<br>103<br>In this study, Ag/ZnO/reduced graphene oxide (Ag/ZnO/rGO) nanocomposite was fabricated and its applications in the detection and killing of bacteria were investigated. This nanocomposite combined the photocatalytic property of ZnO nanoparticles, the high specific surface area and near infrared (NIR) photothermal conversion property of rGO, and the bacteria-killing capability and surface enhanced Raman scattering (SERS) property of Ag nanoparticles. At first, ZnO/rGO nanocomposite was prepared from zinc acetate and graphene oxide (GO) by solvothermal method in t
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Tsao, Rui-Wen, and 曹瑞文. "Investigation of Electron-Hole Pair Production in Reduced Graphene Oxide." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/56351981826981931049.

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碩士<br>國立交通大學<br>電子物理系所<br>102<br>This experiment use reduced graphene oxide (RGO) to explore transport mechanism and use two probe measurements to measure electrical properties. The oxygen coverage of RGO could be estimated by the conductivity at room temperature. In this experiment, RGO oxygen coverage ratio is about 16%～18%. According to previous work, RGO is well described by 2D VRH in low electric field. This experiment try to study transport properties in high electric field. At 80 K, the J-E curve of RGO cannot be well described by Shklovskii expression since Shklovskii expression is der
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Lin, Hung-En, and 林弘恩. "Magnetotransport in chemically reduced graphene oxide and gallium phosphide antimonide." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/99089623646355400100.

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碩士<br>國立臺灣大學<br>物理研究所<br>99<br>In this thesis, two materials, chemically reduced graphene oxide and GaPSb, were investigated for their magnetotransport behaviors under the influence of a magnetic fields up to 11.6 T at the temperatures between 4.5 K and 80 K. A brief summary of our discovery will be given in the following sections. 1. Magnetotransport in chemically reduced graphene oxide In recent years, transport behavior in chemically reduced graphene oxide (R-GO) has been widely investigated. However similar research in the presence of a magnetic field was rare. In chapter 4, the transport
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Lee, Chun-Yuan, and 李浚源. "Properties of graphene thin films derived from high temperature reduced graphene oxide/polyethylene glycol." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/39346699920515877541.

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碩士<br>中原大學<br>化學研究所<br>100<br>Graphene with fast electron mobility, high mechanical strength, high conductivity and transparent characteristics, therefore, becomes very wide applications in electronic components. In this study, graphene was reduced from graphene oxide (GO) by using Hummer’s methods. By adding commercially available polyethylene glycol (PEG) with molecular weight 600, 6000, 20000, and 35000 for slurry formation, we developed the graphene films on glass substrate with good conductivity for electrode applications. The characteristics of graphene/PEG films were studied by using SE
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