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Dissertations / Theses on the topic 'Bimetallic nano'

Author: Grafiati

Published: 22 June 2024

Last updated: 31 July 2025

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1

Khimyak, Tetyana. "New bimetallic clusters - precursors for heterogeneous nano-catalysts." Thesis, University of Cambridge, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.620698.

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2

Jegadeesan, Gautham. "Environmental catalysis using nano-sized bimetallic particles : selenium remediation /." Available to subscribers only, 2005. http://proquest.umi.com/pqdweb?did=1068236761&sid=29&Fmt=2&clientId=1509&RQT=309&VName=PQD.

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3

Snyder, Brian. "An investigation into bimetallic hollow nanoparticles in catalysis." Thesis, Georgia Institute of Technology, 2013. http://hdl.handle.net/1853/47614.

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Nanocatalysis, catalysis using particles on the nanoscale, is an emerging field that has tremendous potential. Nanoparticles have different properties than bulk material and can be used in different roles. Macro sized precious metals, for example, are inert, but nanoparticles of them are becoming more widely used as catalysts. Understanding the manner in which these particles work is vital to improving their efficacy. This thesis focuses on two aspects of nanocatalysis. Chapter 1 begins with a brief introduction into nanotechnology and some of the areas in which nanoparticles are different tha

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4

Agarwal, Shirish. "Palladium/Magnesium Bimetallic Systems for Dechlorination of Polychlorinated Biphenyls." Cincinnati, Ohio : University of Cincinnati, 2009. http://www.ohiolink.edu/etd/view.cgi?acc_num=ucin1236037376.

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Thesis (Ph.D.)--University of Cincinnati, 2009.<br>Advisors: Dionysios Dionysiou (Committee Chair), Souhail Al-Abed (Committee Member), George Sorial (Committee Member), Margaret Kupferle (Committee Member). Title from electronic thesis title page (viewed April 22, 2009). Keywords: PCBs; Dechlorination; Pd/Mg; Bimetallic; Reduction pathway; intermediates; aggressive anions; sediment; nano-synthesis; nano-scaling; sulfide poisoning. Includes abstract. Includes bibliographical references.

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5

Liao, Fenglin. "The development of Pd-based bimetallic nano-catalysts in green chemistry." Thesis, University of Oxford, 2015. https://ora.ox.ac.uk/objects/uuid:2fb03ce6-ba32-4102-96fc-f00fc7593bc0.

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With the gradual depletion of the non-renewable fossil fuel resources and the emerging environmental concerns, the need of exploring renewable synthesis routes of our daily basic stocks is rising. Due to the large contribution to the global primary energy (up to 40&percnt; in some countries), biomass has recently been advocated to be one of the most promising alternatives for fossil fuel. This thesis focuses on the catalytic transformations of biomass or biomass derived molecules into valuable small alcohols such as methanol, ethanol, and propanol, which can be used as both fuel and chemical s

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6

Kane, Kenneth. "Metallic systems at the nano and micro scale: Bimetallic nanoparticles as catalysts and MCrAlY bond coats in thermal barrier coatings." VCU Scholars Compass, 2019. https://scholarscompass.vcu.edu/etd/5732.

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The dissertation is split into two parts. The first part will be focused on changes in material properties found at the nanoscale, as miscibility and electronic structure can change significantly with size. The formation of classically-immiscible bimetallic nanoparticles (BNPs) becomes favorable at the nanoscale and novel catalytic properties can emerge from the bimetallic alloying. The formation of alloyed and non-alloyed BNPs is achieved through pulse laser ablation (PLA) and a significant increase in catalytic activity is observed for both. Recently discovered, the increased activity in the

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7

Forel, Salomé. "Single wall carbon nanotube growth from bimetallic nanoparticles : a parametric study of the synthesis up to potential application in nano-electronics." Thesis, Université Paris-Saclay (ComUE), 2017. http://www.theses.fr/2017SACLX094/document.

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Ce manuscrit présente une étude expérimentale autour de la synthèse des nanotubes de carbone et de leurs possibles intégrations dans des dispositifs. Les remarquables propriétés électroniques et optiques des nanotubes en font un matériau de choix pour entre autres, la nanoélectronique. Néanmoins, l’intégration des nanotubes dans des dispositifs performants est encore aujourd’hui un défi. Cela repose principalement sur la difficulté d’obtenir de grandes quantités de nanotubes mono-paroi avec des propriétés uniformes, propriétés qui sont définies par la structure du nanotube (i.e. leur angle chi

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8

McCoppin, Jared Ray. "FABRICATION AND MASS TRANSPORT ANALYSIS OF TAPE CAST NANO-SILVER HIGH TEMPERATURE SOLDER." Wright State University / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=wright1389285958.

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9

Maknun, Luluil. "Development of mass spectrometric analytical methods for the determination of iron complexes in plants and bacteria and for the determination of cobalt using bimetallic nanoparticles." Electronic Thesis or Diss., Pau, 2023. http://www.theses.fr/2023PAUU3039.

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L'objectif principal de cette recherche est le développement de méthodes analytiques utilisant une technique de séparation couplée à la spectrométrie de masse pour l'analyse de complexes de fer de faible poids moléculaire et une technique de single-particle ICP MS pour la détection de nanoparticules bimétalliques.Dans la première partie, une méthode utilisant la chromatographie liquide avec spectrométrie de masse à double détecteur, spectrométrie de masse (MS) à haute résolution par électrospray (HRAM) et spectrométrie de masse à couplage inductif (ICPMS), a été développée pour les complexes d

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10

Béjaud, Romuald. "Formation et extension de macles de déformation dans des nanostructures cfc : simulations numériques." Thesis, Poitiers, 2017. http://www.theses.fr/2017POIT2318.

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Depuis quelques dizaines d'années, l'élaboration de matériaux nanostructurés tend de plus en plus à se développer. En effet, ces matériaux présentent souvent des propriétés intéressantes et en particulier des propriétés mécaniques surprenantes vis-à-vis de leurs homologues sous forme massive. Les métaux nano-maclés ou nano-lamellaires par exemple, sont connus pour avoir une bonne résistance mécanique, une bonne stabilité thermique et une excellente résistance aux radiations. Au fur et à mesure que l'espacement entre les interfaces diminue, leur densité augmente de manière significative et les

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11

You, Sheng Mu. "Metal organic frameworks as efficient photosensitizer for TiO₂ nanoarray anode and application to water splitting in PEC cells Fe/Ni Bimetallic organic framework deposited on TiO₂ nanotube array for enhancing higher and stable activity of oxygen evolution reaction Novel nano-architectured water splitting photoanodes based on TiO₂-nanorod mats surface sensitized by ZIF-67 coatings Surface sensitization of TiO₂ nanorod mats by electrodeposition of ZIF-67 for water photo-oxidation Electrochemically capacitive deionization of copper (II) using 3D hierarchically reduced graphene oxide architectures." Thesis, université Paris-Saclay, 2020. http://www.theses.fr/2020UPASF015.

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Les réserves de combustibles fossiles diminuent et leur utilisation illimitée depuis la révolution industrielle a généré de profonds changements du climat, notamment des cycles de la température atmosphérique. Stocker l'énergie solaire sous forme d'hydrogène produit par dissociation de l'eau est un moyen idéal pour combattre le réchauffement climatique. Les matériaux de la famille des «metal organic framework» (MOF) commencent à être utilisés comme photo-électrocatalyseurs, notamment pour la photo-dissociation de l'eau. Leur porosité extrêmement élevée et leur grande polyvalence, tant chimique

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12

Yuan, Xiaojiao. "Nanostructures based on conjugated polymer polypyrrole for application in photocatalysis Photocatalytic degradation of organic pollutant with polypyrrole nanostructures under UV and visible light Polypyrrole nanostructures modified with mono- and bimetallic nanoparticles for photocatalytic H2 generation Highly active composite TiO2-polypyrrole nanostructures for water and air depollution under visible light irradiation Highly Promoted Photocatalytic Hydrogen Generation by Multiple Electron Transfer Pathways Visible light-driven simultaneous water oxidationand quinone reduction by a nano-structuredconjugated polymer without co-catalysts." Thesis, université Paris-Saclay, 2020. http://www.theses.fr/2020UPASF011.

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Récemment, les nanostructures de polymères conjuguées π (CPN) ont émergé comme une nouvelle classe de catalyseurs pour diverses applications photocatalytiques comme le fractionnement de (ou photosplitting) de l’eau, la réduction du CO2, le traitement de l’eau (dégradation des polluants organiques et réduction de métaux lourds). Parmi la famille des polymères conjugués, le polypyrrole (PPy) a été le plus étudié en raison de sa stabilité environnementale, de sa synthèse facile, de son excellente stabilité. Dans cette thèse, les nanostructures PPy ont été synthétisées par différentes méthodes : p

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13

Chienyu, Lin, and 林建宇. "Degradation of Perchloroethylene with Dispersed Nano-Fe and Nano-Pd/Fe Bimetallic Particles." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/74164173080296401990.

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碩士<br>國立屏東科技大學<br>環境工程與科學系所<br>99<br>Chlorinated organic compounds are widely used in chemical, agricultural, and pharmaceutical industries. However, if the storage, use, and disposal of those compounds are not properly handled, they may leak into soil, and further pollute the aquifer. Chlorinated solvents due to their high acute toxicity and bioaccumulation cause environmental pollution and are harmful to human body. In this study, some modification techniques of nano zero valent iron (NZVI) were utilized to enhance the degradation of perchloroethylene (PCE). The experimental design included

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14

Yeh, Charng-Ching, and 葉長青. "Supported Pt-Based Bimetallic Anodic Nano-Catalysts For Direct Methanol Fuel Cells." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/71357412433995910455.

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碩士<br>義守大學<br>生物技術與化學工程研究所碩士班<br>94<br>This research is aimed at studying the preparations of anodic nano-catalysts for direct methanol fuel cells by a method of modified polyol reduction, utilizing ethylene glycol (EG), diethylene glycol (DiEG) and triethylene glycol (TriEG) as reducing agent and solvent. Metals such as Sn, W, Mo and Ru, as well as carbon black and multi-walled carbon nano-tubes were employed for the fabrication of supported Pt-based bimetallic catalysts to explore effects on the anodic behaviors of methanol electro-oxidation and CO tolerance. Electrochemical investigations i

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15

Thanh, Nguyen, and 阮台彥. "Remediation of Pentachlorophenol-contaminated Soil with Nano-zero Valent Iron and Bimetallic Iron." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/05517422225253718703.

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碩士<br>國立中央大學<br>環境工程研究所<br>100<br>Zerovalent iron and bimetallic iron have been studied mostly for the degradation of chlorinated compounds in aqueous phase. In this study, laboratory synthesized particles of nano zerovalent iron and commercial bimetallic iron were applied to investigate the reduction kinetics and degradation mechanisms of pentachlorophenol (PCP) spiked sandy soil. Degradation of PCP by nZVI and BioCAT follows the first-order kinetics. The 98% PCP removal efficiency from soil slurries in contact with nano zerovalent iron (nZVI) was mostly attributable to adsorption to nZVI sur

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16

Lin, Ming-Hei, and 林明憙. "Electrolysis-Enhanced Permeable Reactive Barrier Packed with Nano-Pd/Fe Bimetallic Particles of Perchloroethylene." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/52050176023193793112.

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碩士<br>國立屏東科技大學<br>環境工程與科學系所<br>100<br>The aim of this study is to investigate the degradation efficiency of target pollutant, perchloroethylene (PCE), by nano-palladium/iron (Pd/Fe) bimetallic metal particles enhanced by electrolysis. The experiments were divided into four stages. The first stage was to characterize the properties of quartz sand and nano-Pd/Fe particles. The second stage was to conduct the batch tests under various pH values (pH 8-9) on the effects of PCE degradation with nano-Pd/Fe. The third stage was to observe the transport behaviors of solutes through the porous media in

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17

Yeh, Min-Hsin, and 葉旻鑫. "Fabrication of Homogeneously-structured PtIr Bimetallic Nano-Catalyst/Glucose Oxidase Composite Electrode and its Applications." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/75437610847365454270.

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碩士<br>國立臺灣科技大學<br>化學工程系<br>97<br>This investigation mainly consists of two topics: (a) development of novel, bimetallic nanocatalyst PtIr/C and employing nanocatalyst in hydrogen peroxide oxidation reaction (HOPR). (b) Fabrication of the mini-biosensor with the homogeneous catalyst/enzyme composite structure by electrophoresis deposition (EPD) method. The crystalline and particle size of nanocatalyst were investigated by XRD and TEM, respectively. The catalytic activity was obtained by the amperometric determination of HOPR. The studies of synchrotron based- X ray absorption spectroscopy (XA

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18

CHANG, REN-WEN, and 張人文. "Study on structure and atomic distribution of Pt-Ag/C nano-sized bimetallic catalysts for CO oxidation." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/7qc285.

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碩士<br>國立臺灣科技大學<br>化學工程系<br>94<br>In this work, a reduction method based on microwave reaction was used to synthesize Pt-Ag bimetallic catalysts in ethylene glycol solution. A step by step procedure was adopted to prepare Ptcore @ Agshell/C and Agcore @ Ptshell/C nano-sized bimetallic catalysts. By employing the X-ray Absorption Spectroscopy(XAS) and the extracted atomic structure parameters the structure of the bimetallic catalysts was analyzed. The relationship between the structure of the synthesize catalysts and activity toward CO oxidation. From the XRD analysis, the grain size of synthesi

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19

Chen, Hong-Jie, and 陳弘傑. "Electolysis-Enhanced Dispersed Nano Pd/Fe Bimetallic Particles Reduction Coupled with Persulfate Oxidation of Trichloroethylene from Groundwater - A Sandbox Test." Thesis, 2015. http://ndltd.ncl.edu.tw/handle/6r7rsc.

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碩士<br>國立屏東科技大學<br>環境工程與科學系所<br>103<br>In this study, electrolysis-enhanced dispersed permeable reactive barrier (PRB) packed with nano-scale palladium/iron (Pd/Fe) bimetallic particles coupling with persulfate were used to degrade trichlorethylene (TCE) in water The experiments were performed within a sand box. The experimental procedures were divided into five parts as follows: (1) characterization of nano-sacle Fe, nano-scale Pd/Fe, and dispersed nano-scale Pd/Fe, (2) test water quality analysis and adsorption test of TCE on quartz sand, (3) transport tests in porous media, (4) TCE degradati

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20

Sinha, Shyam Kanta. "Synthesis and Transformation of AuCu Intermetallic Nanoparticles." Thesis, 2013. https://etd.iisc.ac.in/handle/2005/3407.

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Investigations on size dependent phase stability and transformations in isolated nanoparticles have gained momentum in recent times. Size dependent phase stability generates size specific particle microstructure which consequently yields size specific functionality. One important prerequisite for conducting studies on nanoparticles is their synthesis. A substantial amount of research effort has therefore been focused on devising methodologies for synthesizing nanoparticles with controlled shapes and sizes. The present thesis deals with both these two aspects: (a) synthesis of nanoparticles and

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Sinha, Shyam Kanta. "Synthesis and Transformation of AuCu Intermetallic Nanoparticles." Thesis, 2013. http://etd.iisc.ernet.in/2005/3407.

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Investigations on size dependent phase stability and transformations in isolated nanoparticles have gained momentum in recent times. Size dependent phase stability generates size specific particle microstructure which consequently yields size specific functionality. One important prerequisite for conducting studies on nanoparticles is their synthesis. A substantial amount of research effort has therefore been focused on devising methodologies for synthesizing nanoparticles with controlled shapes and sizes. The present thesis deals with both these two aspects: (a) synthesis of nanoparticles and

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