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Dissertations / Theses on the topic 'Functional Noble Metal Nanoparticle'

Author: Grafiati

Published: 7 September 2023

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1

Weerawardene, K. L. Dimuthu M. "Optical and luminescence properties of noble metal nanoparticles." Diss., Kansas State University, 2017. http://hdl.handle.net/2097/38189.

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Doctor of Philosophy<br>Department of Chemistry<br>Christine M. Aikens<br>The remarkable optical and luminescence properties of noble metal nanoparticles (with diameters < 2 nm) attract researchers due to potential applications in biomedicine, photocatalysis, and optoelectronics. Extensive experimental investigations on luminescence properties of thiolate-protected gold and silver nanoclusters during the past decade have failed to unravel their exact photoluminescence mechanism. Herein, density functional and time-dependent density functional theory (DFT and TDDFT) calculations are performed t

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2

Guidez, Emilie Brigitte. "Quantum mechanical origin of the plasmonic properties of noble metal nanoparticles." Diss., Kansas State University, 2014. http://hdl.handle.net/2097/17314.

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Doctor of Philosophy<br>Department of Chemistry<br>Christine M. Aikens<br>Small silver and gold clusters (less than 2 nm) display a discrete absorption spectrum characteristic of molecular systems whereas larger particles display a strong, broad absorption band in the visible. The latter feature is due to the surface plasmon resonance, which is commonly explained by the collective dipolar motion of free electrons across the particle, creating charged surface states. The evolution between molecular properties and plasmon is investigated. Time-dependent density functional theory (TDDFT) calculat

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Karimova, Natalia Vladimirovna. "Theoretical study of the optical properties of the noble metal nanoparticles: CD and MCD spectroscopy." Diss., Kansas State University, 2017. http://hdl.handle.net/2097/38177.

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Doctor of Philosophy<br>Department of Chemistry<br>Christine M. Aikens<br>Gold and silver particles with dimensions less than a nanometer possess unique characteristics and properties that are different from the properties of the bulk. They demonstrate a non–zero HOMO–LUMO gap that can reach up to 3.0 eV. These differences arise from size quantization effects in the metal core due to the small number of atoms. These nanoparticles have attracted great interest for decades both in fundamental and applied research. Small gold clusters protected by various types of ligands are of interest because

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4

Herrmann, Anne-Kristin. "Preparation, Processing and Characterization of Noble Metal Nanoparticle-based Aerogels." Doctoral thesis, Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2015. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-149672.

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New challenges in nanotechnology arise in the assembly of nanoobjects into three-dimensional superstructures, which may carry synergetic properties and open up new application fields. Within this new class of materials nanostructured, porous functional metals are of great interest since they combine high surface area, gas permeability, electrical conductivity, plasmonic behavior and size-enhanced catalytic reactivity. Even though a large variety of preparation pathways for the fabrication of porous noble metals has already been established, several limitations are still to be addressed by res

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5

Gill, Arran Michael. "The extrusion of noble metal nanoparticle catalysts for sustainable oxidation reactions." Thesis, University of Southampton, 2017. https://eprints.soton.ac.uk/422157/.

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Through employing a combination of complimentary structural, spectroscopic and high-resolution microscopy techniques, the superior properties of a [PtCl4]2- precursor to yield well-defined, isolated nanoparticles (predominantly 2-3 nm) upon microporous framework architectures, have been established. These are prepared via a one-step, in situ methodology, within three-dimensional porous molecular architectures, to afford robust heterogeneous catalysts. The catalytic activity of these materials can be intrinsically linked to the degree of nanoparticle formation. The [PtCl4]2- precursor bestows a

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6

Crites, Charles-Oneil. "Investigating the Interactions between Free Radicals and Supported Noble Metal Nanoparticles in Oxidation Reactions." Thesis, Université d'Ottawa / University of Ottawa, 2015. http://hdl.handle.net/10393/33404.

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This thesis studies the interaction between free radical species and supported noble metal nanoparticles (silver and gold) in the context of oxidation reactions. The peroxidation of cumene is the first reaction to be discussed and the difference in peroxidation product distribution using silver nanoparticles (AgNP) versus gold nanoparticles (AuNP) is examined. Specifically, cumyl alcohol is obtained as the major product obtained when using supported AuNP, whereas cumene hydroperoxide is favoured for AgNP. Such variations in product distribution are partially explained by the differences in the

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7

Near, Rachel Deanne. "Theoretical and experimental investigation of the plasmonic properties of noble metal nanoparticles." Diss., Georgia Institute of Technology, 2013. http://hdl.handle.net/1853/52181.

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Noble metal nanoparticles are of great interest due to their tunable optical and radiative properties. The specific wavelength of light at which the localized surface plasmon resonance occurs is dependent upon the shape, size and composition of the particle as well as the dielectric constant of the host medium. Thus, the optical properties of noble metal nanoparticles can be systematically tuned by altering these specific parameters. The purpose of this thesis is to investigate some of these properties related to metallic nanoparticles. The first several chapters focus on theoretical mode

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8

Bruzas, Ian R. "Biocompatible noble metal nanoparticle substrates for bioanalytical and biophysical analysis of protein and lipids." University of Cincinnati / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1553250462519941.

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9

JOUVE, ANDREA. "VALORISATION OF BIOMASS-DERIVED MOLECULES BY NOBLE METAL CATALYSTS." Doctoral thesis, Università degli Studi di Milano, 2020. http://hdl.handle.net/2434/710533.

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Valorisation of different biomass derived molecules was successfully approached and studied in this PhD project. The focus of the thesis was addressed to the catalysts preparation, passing through an accurate catalytic designed, to be then tested in academic and industrially appealing reactions. This approach led to the synthesis of different but equally interesting catalytic systems for the valorisation of substrates derived from the first and second generation of biomass feedstock. An extended study, at first, was conducted on the oxidation of glycerol (1st generation of biomass related), b

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10

Sinha, Roy Rajarshi. "Ab initio simulation of optical properties of noble-metal clusters." Thesis, Aix-Marseille, 2018. http://www.theses.fr/2018AIXM0017/document.

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L'intérêt de la recherche fondamentale pour les morceaux nanométriques de métaux nobles est principalement dû à la résonance localisée des plasmons de surface (LSPR) dans l'absorption optique. Différents aspects, liés à la compréhension théorique de la LSPR dans le cas de clusters de métaux nobles de taille dite intermédiaire, sont étudiés dans ce manuscrit. Afin d'avoir une vision plus large nous utilisons deux approches : l'approche électromagnétique classique et le formalisme ab initio en temps réel de la théorie de la fonctionnelle de la densité dépendant du temps (RT-TDDFT). Une comparais

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11

Leyßner, Felix [Verfasser]. "Analysis of functional organic molecules at noble metal surfaces by means of vibrational spectroscopies / Felix Leyßner." Berlin : Freie Universität Berlin, 2011. http://d-nb.info/1026265657/34.

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12

Herrmann, Anne-Kristin Verfasser], Alexander [Akademischer Betreuer] Eychmüller, and Stefan [Akademischer Betreuer] [Kaskel. "Preparation, Processing and Characterization of Noble Metal Nanoparticle-based Aerogels / Anne-Kristin Herrmann. Gutachter: Alexander Eychmüller ; Stefan Kaskel. Betreuer: Alexander Eychmüller." Dresden : Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2015. http://d-nb.info/1069040401/34.

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13

Herrmann, Anne-Kristin [Verfasser], Alexander Akademischer Betreuer] Eychmüller, and Stefan [Akademischer Betreuer] [Kaskel. "Preparation, Processing and Characterization of Noble Metal Nanoparticle-based Aerogels / Anne-Kristin Herrmann. Gutachter: Alexander Eychmüller ; Stefan Kaskel. Betreuer: Alexander Eychmüller." Dresden : Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2015. http://d-nb.info/1069040401/34.

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14

Artuc, Zuleyha. "Density Functional Theory Investigation Of Noble Metal Reduction Agents On Gamma-al2o3 In Nox Storage/reduction Catalysis." Master's thesis, METU, 2011. http://etd.lib.metu.edu.tr/upload/12613756/index.pdf.

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Pollution from automobile exhaust is one of the most major environmental problems because of increasing usage of engine technologies. Diesel and lean burn gasoline engines operate under oxygen rich (lean) conditions and they emit harmfull gases to the atmosphere (CO,CO2, NO, NO2). The control of NOx emission from exhaust has become a challenging issue in engine industry because of the worldwide environmental regulations. Therefore lean-burn NOx emission control technologies have been developed to reduce emission of harmfull gases from exhausts, and the NOx storage/reduction (NSR) catalysts is

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15

Asara, Gian Giacomo. "Transition metal carbides as active phase and as support in catalysis: Insights from first principles theoretical modelling." Doctoral thesis, Universitat Rovira i Virgili, 2014. http://hdl.handle.net/10803/454774.

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Els carburs de metalls de transició (TMC) exhibeixen propietats químiques i catalítiques similars a les dels costosos metalls nobles. La conversió d'alcohol, hidrogenació d'olefines i altres reaccions importants han demostrat l'aplicabilitat d'aquests compostos en processos industrials. També se sap que nanopartícules de metalls nobles (NMNPs) mostren una alta activitat catalítica tot i la baixa o nul • la reactivitat del metall sòlid. A més, investigacions recents assenyalen que els suports de TMC polaritzen la densitat electrònica de NMNPs adsorbits i augmenten l'activitat catalítica respect

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16

Martelli, Francesca. "Supported metal nanoparticles for sustainable green catalytic processes." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2020. http://amslaurea.unibo.it/20699/.

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Preformed Au nanoparticles supported on activated carbon and TiO2 were synthesised by sol-immobilisation. Polyethylene glycol, polyvinyl pyrrolidone and polyvinyl alcohol were used as stabilisers for the gold nanoparticles at different polymer/Au wt/wt ratios for each polymer. The effect of polymer/Au wt/wt ratios was investigated on (i) the average nanoparticle size, (ii) catalytic activity for two reactions, 4-nitrophenol reduction and glucose oxidation to glucaric acid. 4-nitrophenol reduction is recognised as a model reaction for nanomaterial catalytic activity tests; glucose oxidation to

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17

Arnedo-Sanchez, Leticia. "Lanthanide and transition metal complexes as building blocks for supramolecular functional materials." Thesis, Strasbourg, 2016. http://www.theses.fr/2016STRAF047.

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Cette thèse porte sur les complexes de coordinations basés sur les métaux de transitions et les lanthanides en tant qu'éléments clés pour créer des matériaux fonctionnels. Précisément, des matériaux contenant des propriétés de détection, d'auto assemblage et optique ont été conçus et optimisés. En plus d'une brève introduction sur la photophysique, les gels supramoléculaires et les nanoparticules métalliques, un résumé sur les différents instruments et techniques employés pour ces travaux est inclus. Le chapitre 3 décrit la synthèse et la caractérisation de complexe de lanthanide anionique. De

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18

Hejazi, Seyedsina [Verfasser], Hiroaki [Akademischer Betreuer] Tsuchiya, and Patrik [Gutachter] Schmuki. "Utilization of noble metal co-catalysts on TiO2 for photocatalytic H2 production: from nanoparticle positioning to single-atom catalysis / Seyedsina Hejazi ; Gutachter: Patrik Schmuki ; Betreuer: Hiroaki Tsuchiya." Erlangen : Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 2020. http://d-nb.info/1220505986/34.

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19

Oh, Seung Cheol [Verfasser], Johannes [Akademischer Betreuer] Barth, and Markus [Akademischer Betreuer] Lackinger. "Single layer films of functional molecules on noble metal surfaces visited by scanning tunneling microscopy and X-ray spectroscopy / Seung Cheol Oh. Gutachter: Johannes Barth ; Markus Lackinger. Betreuer: Johannes Barth." München : Universitätsbibliothek der TU München, 2014. http://d-nb.info/1060825449/34.

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20

MIGLIORINI, LORENZO. "DEVELOPMENT OF FUNCTIONAL NANOCOMPOSITE MATERIALS TOWARDS BIODEGRADABLE SOFT ROBOTICS AND FLEXIBLE ELECTRONICS." Doctoral thesis, Università degli Studi di Milano, 2020. http://hdl.handle.net/2434/704286.

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World population is continuously growing, as well as the influence we have on the ecosystem’s natural equilibrium. Moreover, such growth is not homogeneous and it results in an overall increase of older people. Humanity’s activity, growth and aging leads to many challenging issues to address: among them, there are the spread of suddenly and/or chronic diseases, malnutrition, resource pressure and environmental pollution. Research in the novel field of biodegradable soft robotics and electronics can help dealing with these issues. In fact, to face the aging of the population, it is necessary an

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21

Grillet, Nadia. "Réponse optique de nano-objets uniques d’argent : couplage plasmonique et photo-oxydation." Thesis, Lyon 1, 2011. http://www.theses.fr/2011LYO10135/document.

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La réponse optique de nanostructures métalliques est caractérisée par une amplification locale du champ électromagnétique appelée Résonance Plasmon de Surface (RPS) reliée à leur nature et leur morphologie. Pour étudier la réponse optique d’une nanoparticule unique, un dispositif ultra-sensible de spectroscopie à modulation spatiale utilisant une source de lumière blanche a été développé : il permet de mesurer la section efficace d’extinction absolue de nano-objets uniques sur un large domaine spectral (300-900 nm). Des images de microscopie électronique à transmission peuvent être obtenues in

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22

Hughes, Zak E., and T. R. Walsh. "Non-covalent adsorption of amino acid analogues on noble-metal nanoparticles: influence of edges and vertices." 2016. http://hdl.handle.net/10454/15841.

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Yes<br>The operation of many nanostructured biomolecular sensors and catalysts critically hinges on the manipulation of non-covalent adsorption of biomolecules on unfunctionalised noble-metal nanoparticles (NMNPs). Molecular-level structural details of the aqueous biomolecule/NMNP interface are pivotal to the successful realisation of these technologies, but such experimental data are currently scarce and challenging to obtain. Molecular simulations can generate these details, but are limited by the assumption of non-preferential adsorption to NMNP features. Here, via first principles calculat

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Halder, Aditi. "Functional Noble Metal, Bimetallic And Hybrid Nanostructures By Controlled Aggregation Of Ultrafine Building Blocks." Thesis, 2009. https://etd.iisc.ac.in/handle/2005/978.

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Functional nanomaterials are gaining attention due to their excellent shape and size dependent optical, electrical and catalytic properties. Synthesizing nanoparticles is no longer novel with the availability of a host of synthesis protocols for a variety of shapes and sizes of particles. What is currently needed is an understanding the fundamentals of shape and size controlled synthesis to produce functional nanomaterials that is simple and general. In addition to simple metallic nanostructures, synthesizing bimetallic and hybrid nanostructures are important for applications. Instead of tryin

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Halder, Aditi. "Functional Noble Metal, Bimetallic And Hybrid Nanostructures By Controlled Aggregation Of Ultrafine Building Blocks." Thesis, 2009. http://hdl.handle.net/2005/978.

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Functional nanomaterials are gaining attention due to their excellent shape and size dependent optical, electrical and catalytic properties. Synthesizing nanoparticles is no longer novel with the availability of a host of synthesis protocols for a variety of shapes and sizes of particles. What is currently needed is an understanding the fundamentals of shape and size controlled synthesis to produce functional nanomaterials that is simple and general. In addition to simple metallic nanostructures, synthesizing bimetallic and hybrid nanostructures are important for applications. Instead of tryin

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Leonard, Donovan N. "Bio-related noble metal nanoparticle structure property realtionships." 2007. http://www.lib.ncsu.edu/theses/available/etd-03202007-234527/unrestricted/etd.pdf.

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26

"Noble metal nanoparticle-loaded mesoporous oxide microspheres for catalysis." 2012. http://library.cuhk.edu.hk/record=b5549563.

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貴金屬納米顆粒催化劑因其獨特的性質而備受關注。他們的高比表面積和可控的形貌使得他們表現出於同類體相材料所不同的催化性能。為了避免催化反應過程中由於納米顆粒本身形貌的改變而引起的催化活性降低，貴金屬納米顆粒通常被負載在固體氧化物載體上。同時，由於協同作用的產生，固體金屬氧化物載體在反應過程中也能對納米顆粒的催化效果產生影響。本論文系統介紹了利用超聲噴霧法製備貴金屬納米顆粒負載的金屬氧化物微納米球的過程，以及為研究這種微纳米球的催化性能而進行的實驗檢測。氧化物存在不仅为催化剂提供了载体，而且其介孔结构亦有利于反应物扩散到纳米催化剂的周围，从而提高反应的速率。<br>本論文首先介紹了一步法製備貴金屬納米顆粒負載的金屬氧化物微纳米球及其在催化反应中的應用。我們選擇了金、鉑和鈀來分別負載在二氧化鈦、二氧化鋯和三氧化二鋁微納米球上。這幾種貴金屬和氧化物都是在環境污染控制、石油化工產業和醫藥產業中具有代表性的催化劑及襯底。除了檢測我們所製備的微納米顆粒的結構形貌等特徵外，我們還利用對硝基苯酚還原為對胺基苯酚的這個催化反應檢驗了這些貴金屬納米顆粒負載的氧化物微納米球的催化活性。考慮到三種貴金屬和三種氧化物的排列組合，以及金屬含量可能產生的影響，我們準備了九類共18份樣品，逐個進行催化反應。最後的結果顯示，含鈀0.1%摩爾比例的二氧化鈦表現出最強的催化活性。同时，這種方法也可以推廣到其他的貴金屬以及

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Herrmann, Anne-Kristin. "Preparation, Processing and Characterization of Noble Metal Nanoparticle-based Aerogels." Doctoral thesis, 2014. https://tud.qucosa.de/id/qucosa%3A28215.

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New challenges in nanotechnology arise in the assembly of nanoobjects into three-dimensional superstructures, which may carry synergetic properties and open up new application fields. Within this new class of materials nanostructured, porous functional metals are of great interest since they combine high surface area, gas permeability, electrical conductivity, plasmonic behavior and size-enhanced catalytic reactivity. Even though a large variety of preparation pathways for the fabrication of porous noble metals has already been established, several limitations are still to be addressed by res

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28

Chen, Yu-Chi, and 陳羽綺. "Preparation and Application of Alkyl Silicone Polymer Noble Metal Nanoparticle Catalyst Ink." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/17740975276221108147.

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碩士<br>國防大學理工學院<br>化學工程碩士班<br>102<br>In this study, the preparation of St-co-MPS copolymer with both styrene(St) monomer and γ-methacryloxypropyltrimethoxysilane (γ-MPS) monomer by free radical polymerization. Poly(St-co-MPS)/Pd was prepared via self-reduction of palladium ions by St-co-MPS oligomer without using any reducing agent or surfactant. It was shown that Pd was reduced by the chain-end sulfate groups of styrene when copolymer reacted with the metallic ions. These St-co-MPS copolymer was characterized by 13C-NMR, 29Si-NMR and FTIR to confirm polymer composition and quantity sulfonation

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Wei, Yunle. "Noble metal nanoparticles in glass: A universal pathway towards light modulation." Thesis, 2019. http://hdl.handle.net/2440/124225.

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Incorporating metallic nanoparticles (NPs) in glass has been of intense artistic interest and scientific and technical enthusiasm, since the localized surface plasmon resonance (LSPR) of metallic nanoparticles enrich glass with light modulation capability, which allows applications from colored glasses to photonic devices. The conventional method of generating metallic NPs in glass comprises two steps: (1) prepare a parent glass containing metal ions over the entire glass volume by the melting-quenching technique; (2) strike the parent glass by post heat-treatment, during which the metal ions

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Jian, Shiou-Jen, and 簡秀真. "Noble Metal Nanoparticle Modified WO3 Nanowire Arrays for the Enhancement of Photoelectrochemical Hydrogen Generation under Solar Light Illumination." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/09202803944132973653.

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GULLACE, SARA. "Noble metal nanoparticles as active materials for solar energy conversion and chemical sensing." Doctoral thesis, 2020. http://hdl.handle.net/11570/3181468.

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The aim of this thesis is to assess the possible applications of noble metal nanoparticles (NPs) in the fields of solar energy production and chemical sensing. The research project arises directly from the well-known extraordinary properties of noble metal NPs, namely the optical and electrical properties, high surface area, high catalytic activity and surface enhanced Raman scattering effect. More specifically, concerning the energy production field, the first part of the thesis will deal with the application of Au NPs as counter electrode material in dye sensitized solar cells (DSSCs). This

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Duoss, Eric Brian. "Nanoparticle and sol-gel inks for direct-write assembly of functional metallic and metal oxide materials /." 2009. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:3362776.

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Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2009.<br>Source: Dissertation Abstracts International, Volume: 70-06, Section: B, page: 3724. Adviser: Jennifer A. Lewis. Includes bibliographical references. Available on microfilm from Pro Quest Information and Learning.

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Liu, Po-Chun, and 劉柏均. "Development of New Multicoeffient Density Functional Theory for Main-Group and Transition Metal Chemistry ; Reaction Dynamics Study of Noble-Gas Exchange Reactions." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/87548192189876943260.

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碩士<br>國立中正大學<br>化學暨生物化學研究所<br>102<br>This thesis consists of three chapters. In chapter 1, we applied the multi-coefficient density functional theory (MC-DFT) to a few recent Minnesota functionals. In chapter 2, we have developed a new method using mixed functionals and we tested it on 70 bond energies of 3d transition-metal-containing molecules. In chapter 3, we investigated the kinetic isotope effects and tunneling effects of noble-gas exchange reactions. 　　　　In chapter 1, we have applied MC-DFT method to four recent Minnesota functionals, including M06-2X, M08-HX, M11, and MN12-SX on the p

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Javier, Alnald Caintic. "Integrating Experiment and Theory in Electrochemical Surface Science: Studies on the Molecular Adsorption on Noble-Metal Electrode Surfaces by Density Functional Theory, Electron Spectroscopy, and Electrochemistry." Thesis, 2013. http://hdl.handle.net/1969.1/151363.

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Computational techniques based on density functional theory (DFT) and experimental methods based on electrochemistry (EC), electrochemical scanning tunneling microscopy (EC-STM), and high-resolution electron energy loss spectroscopy (HREELS) were employed to study the adsorption of (i) sulfuric acid on Pd(111), (ii) benzene on Pd(111), (iii) hydroquinone/benzoquinone on Pd(111), (iv) hydroquinone sulfonate/benzoquinone sulfonate on Pd(111), (v) 2,3-dimethylhydroquinone/2,3-dimethylbenzoquinone on Pd(111) and polycrystalline Pd, (vi) hydrogen on 1-6 monolayers (ML) of Pd deposited on a Pt(111)

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Anumol, E. A. "Mechanisms of Formation and Thermal Stabililty of Functional Nanostructures." Thesis, 2012. http://etd.iisc.ac.in/handle/2005/3163.

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There are many challenges in materializing the applications utilizing inorganic nanoparticles. The primary drawback is the degradation of properties due to aggregation and sintering either due to elevated temperatures or prevailing chemical/electrochemical conditions. In this thesis, various wet chemical synthesis methods are developed to obtain metal nanostructures with enhanced thermal stability. The thesis is organized as below: Chapter 1 presents the problems and challenges in materializing the application of nanomaterials associated with the thermal stability of nanomaterials. A review o

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Anumol, E. A. "Mechanisms of Formation and Thermal Stabililty of Functional Nanostructures." Thesis, 2012. http://hdl.handle.net/2005/3163.

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There are many challenges in materializing the applications utilizing inorganic nanoparticles. The primary drawback is the degradation of properties due to aggregation and sintering either due to elevated temperatures or prevailing chemical/electrochemical conditions. In this thesis, various wet chemical synthesis methods are developed to obtain metal nanostructures with enhanced thermal stability. The thesis is organized as below: Chapter 1 presents the problems and challenges in materializing the application of nanomaterials associated with the thermal stability of nanomaterials. A review o

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