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Dissertations / Theses on the topic 'Green Synthesis of Nanoparticles'

Author: Grafiati

Published: 5 June 2025

Last updated: 1 August 2025

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1

Disci-Zayed, Duygu [Verfasser]. "Green synthesis of nanoparticles / Duygu Disci-Zayed." Kiel : Universitätsbibliothek Kiel, 2019. http://d-nb.info/1197055215/34.

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CHUGH, MOHITA. "GREEN SYNTHESIS OF SILVER NANOPARTICLES FROM CHLORELLA MINUTISSIMA." Thesis, DELHI TECHNOLOGICAL UNIVERSITY, 2021. http://dspace.dtu.ac.in:8080/jspui/handle/repository/18838.

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The development of a remediation technique that is environment friendly, efficient and economical for the abatement of heavy metals and dyes will be an important step towards the treatment of water pollutants. For this, silver nanoparticles were synthesized from green algae Chlorella minutissima extract. For the enhancement of silver nanoparticles synthesis, various optimization studies were carried out where different cell disruption techniques (sonication, heating and autoclave), various range of pH (4 to 12) of reaction mixture, various salt and biomass concentration along with contac

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3

Bhattarai, Badri Bhattarai. "Green Synthesis and Gold Alloying of Silver Molecular Nanoparticles." University of Toledo / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1533312041161417.

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Carkner, Andrew. "Green metal nanoparticle synthesis." Thesis, McGill University, 2008. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=22037.

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Title: Green Metal Nanoparticle Synthesis Silver and nickel nanoparticles have diverse applications in catalysis, composite materials, and electronics. Current production methods rely on high-energy processes or harsh chemicals; thus it is preferable to use environmentally benign compounds for their synthesis. This project studied the aqueous synthesis of nickel nanoparticles from nickel acetate using glucose, formate, and hydrazine as reducing agents. It was found that although the reactions are thermodynamically favourable, nickel nanoparticles could not be produced using glucose or formate

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Kalabegishvili, T., A. Faanhof, E. Kirkesali, M. V. Frontasyeva, S. S. Pavlov, and I. Zinicovscaia. "Synthesis of Gold Nanoparticles by Blue-Green Algae Spirulina Platensis." Thesis, Sumy State University, 2012. http://essuir.sumdu.edu.ua/handle/123456789/34969.

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The synthesis of gold nanoparticles by one of the many popular microorganisms – blue-green algae Spirulina platensis was studied. The complex of optical and analytical methods was applied for investigation of experimental samples after exposure to chloroaurate (HAuCl4) solution at different doses and for different time intervals. To characterize formed gold nanoparticles UV-vis Spectrometry, Transmission Electron Microscopy (TEM), Scanning Electron Microscopy (SEM), Energy-dispersive analysis of X-rays (EDAX) were used. It was shown that after 1.5 – 2 days of exposure the extracellular fo

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Dahl, Jennifer Ann 1976. "Synthesis of functional nanomaterials within a green chemistry context." Thesis, University of Oregon, 2007. http://hdl.handle.net/1794/6131.

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xvii, 183 p. : ill. (some col.) A print copy of this thesis is available through the UO Libraries. Search the library catalog for the location and call number.<br>In recent years, nanoscience has evolved from a multidisciplinary research concept to a primary scientific frontier. Rapid technological advancements have led to the development of nanoscale device components, advanced sensors, and novel biomimetic materials. However, potential negative impacts of nanomaterials are sometimes overlooked during the discovery phase of research. The implementation of green chemistry principles can enhanc

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Dahl, Jennifer Ann. "Synthesis of functional nanomaterials within a green chemistry context /." Connect to title online (Scholars' Bank) Connect to title online (ProQuest), 2007. http://hdl.handle.net/1794/6131.

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Thesis (Ph. D.)--University of Oregon, 2007.<br>Typescript. Includes vita and abstract. Includes bibliographical references (leaves 158-183). Also available online in Scholars' Bank; and in ProQuest, free to University of Oregon users.

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Nate, Zondi. "Green synthesis of copper and silver nanoparticles and their antimicrobial activity." Thesis, Vaal University of Technology, 2018. http://hdl.handle.net/10352/424.

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M. Tech. (Department of Chemistry, Faculty of Applied and Computer Sciences), Vaal University of Technology<br>The present study includes the use of a green synthetic method to prepare copper and silver nanoparticles using chitosan, aqueous extracts of Camellia sinensis, Combretum molle and Melia azedarach linn leaves. This study aims to investigate the influence of capping and precursor concentration on the properties of silver nanoparticles with emphasis on the medicinal plants chosen. The effect of capping agent on the properties of copper nanoparticles is also investigated. The phytochemic

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9

Nqunq, Sphamandla. "Optical and microarray silver-gold based sensors for the detection of e.coli 0157:h7 in seawater." University of the Western Cape, 2021. http://hdl.handle.net/11394/8256.

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>Magister Scientiae - MSc<br>Recently researchers reported that nanoparticles functionalised through chemical methods possess risks to the environment and to the human health since they use hazardous chemicals and produce toxic waste. The increasing demand of nanomaterials for application in the field of science require an alternative method for synthesis of nanomaterials that are environmentally friendly, eco-friendly and non-toxic. The present study describes the green synthesis method for functionalisation of nanomaterials. Green synthesis methods are considered as a novel approach for func

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Kherde, Yogesh A. "Green Synthesis and Evaluation of Catalytic Activity of Sugar Capped Gold Nanoparticles." TopSCHOLAR®, 2014. http://digitalcommons.wku.edu/theses/1388.

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Owing to the importance of gold nanoparticles in catalysis, designing of them has become a major focus of the researchers. Most of the current methods available for the synthesis of gold nanoaprticles (GNPs) suffer from the challenges of polydispersity, stability and use of toxic and harmful chemicals. To overcome these limitations of conventional methods, in our present study, we made an attempt to design a method for the green synthesis of monodispersed and stable gold nanoparticles by sugars which act as reducing and stabilizing agent. Characterization of synthesized nanoparticles was done

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Elbagory, Abdulrahman Mohammed Mohammed Nagy. "Green synthesis and characterization of gold nanoparticles from South African plants and their biological evaluations." University of the Western Cape, 2019. http://hdl.handle.net/11394/7011.

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Philosophiae Doctor - PhD<br>The field of nanotechnology continues to offer solutions for biotechnologists whose target is to improve the quality of life by finding new therapies to combat diseases. Gold nanoparticles (AuNPs) have been showing great potentials in many biomedical applications. The antibacterial activity of the AuNPs presents a therapeutic option for conditions caused by bacterial infections such as chronic wounds. Also, these versatile particles can offer solutions in the treatments of infectious diseases and can also be exploited as “smart” vehicles to carry drugs, such

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Mukhoro, Ofhani Christopher. "Green Synthesis and characterization of gold Nanoparticles using Green Alga Ulva Lactuca and evaluation of their Catalytric Role." University of the Western Cape, 2016. http://hdl.handle.net/11394/6078.

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Magister Scientiae - MSc (Biotechnology)<br>Nanoparticles synthesized using typical chemical procedures have associated environmental risks because of the use of hazardous chemicals. With the ever-increasing potential application for nanomaterials, there is a growing need to develop new synthetic procedures for nanomaterials which are non-toxic and eco-friendly. This study presents, as a first step, the screening of the aqueous extracts of several seaweeds in order to assess their ability to produce gold nanoparticles (AuNPs). Eleven aqueous extracts were screened for the synthesis of AuNPs an

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Worsley, Myles. "Development of novel nanoengineered materials : chemical synthesis, properties and applications." Thesis, Brunel University, 2015. http://bura.brunel.ac.uk/handle/2438/14019.

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The materials synthesised in this study were designed to have novel morphology coupled with a tightly controlled surface composition that could be varied depending on a application. Preparations with simple single metal oxides (i.e. TiO2, SiO2, Al2O3 and ZrO2) were used as the starting point with the latter stages involving multi-metal oxide coatings and materials. The research was divided into three interconnected areas; i) biotemplating, ii) alternative synthetic morphologies to biotemplating and iii) the synergy between microparticles and insecticides. For the investigation into biotemplati

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Kamras, Brian Leon. "Application-Focused Investigation of Monovalent Metal Complexes for Nanoparticle Synthesis." Thesis, University of North Texas, 2019. https://digital.library.unt.edu/ark:/67531/metadc1538771/.

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Over the last 20 years, there has occurred an increase in the number, scope, and impact of nanomaterials projects. By leveraging the Surface Plasmon Resonance of metallic nanoparticles for labelling, sensing, and treatment, researchers have demonstrated the versatile utility of these nanomaterials in medicine. The literature provides evidence of use of simple, well-known chemistry for nanomaterials synthesis when the focus is new applications of nanomaterials. A case in point, is the synthesis of metallic nanoparticles, whereby HAuCl4, CuCl2, Cu(acac)2, and AgNO3 are typically employed as n

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Mokone, Mmola. "The assessment of the bactericidal effect of green synthesized silver nanoparticles against a panel of infectious microorganisms." University of the Western Cape, 2016. http://hdl.handle.net/11394/5450.

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>Magister Scientiae - MSc<br>The emergence of multiple drug resistant microorganisms poses a major threat to human life. These microorganisms have made the currently used antibiotics ineffective and therefore continue to thrive. Therefore, there is a need for development of new, broad-secptrum antibiotics which is effective against almost every infectious microorganism. These antibiotics should ensure high effectiveness against the infectious pathogens while it is less detrimental to human health. Thus the search is channelled in nanoscience and nanotechnology in order to develop antibiotics

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Lucas, Shakeela. "Green synthesis and characterization of silver nanoparticles (AgNPs) from Bulbine frutescens leaf extract and their antimicrobial effects." University of the Western Cape, 2020. http://hdl.handle.net/11394/7251.

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>Magister Scientiae - MSc<br>Combating antimicrobial resistant infections caused by nosocomial pathogens poses a major public health problem globally. The widespread use of broad-spectrum antibiotics for the treatment of wound infections has led to the appearance of multidrug-resistant (MDR) microbes which further exacerbates the growth of microbes amongst patients. It may result in prolonged debility of the patient and an increase in healthcare costs due to prolonged hospital stays and expensive treatment regimens to avoid patient-patient transmission. Therefore, it is imperative that alterna

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Kortusová, Dominika. "Příprava nanočástic green syntézou." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2015. http://www.nusl.cz/ntk/nusl-232068.

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This thesis deals with green synthesis of noble metals nanoparticles. The first part contains secondary literature research which maps both the traditional and newly developed techniques of nanoparticles preparation. Most attention is given to the various types of green synthesis, which constitute an environmentally friendly alternative to industrially applied methods. The second part deals with the preparation of noble metal nanoparticles using tea broths. The section describes the entire synthesis process and includes photographic documentation. A total of eight colloidal solutions were prep

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Ngungeni, Yonela. "Antimicrobial, anticancer and catalytic activities of green synthesized Avocado seed extract-gold nanoparticles." University of the Western Cape, 2019. http://hdl.handle.net/11394/7809.

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>Magister Scientiae - MSc<br>Nature through billions of years of trial and error has produced an immeasurable amount of natural systems like plants, birds and animals. The intelligence of nature is hidden in these natural systems and researchers are turning towards “Nature’s intelligence” to find inspiration and advance novelty in the development of nanomaterials. Gold nanoparticles (AuNPs) have unique optical, electronic and physicochemical features which has gained them popularity and widespread exploitation in various applications. The conventional methods used for AuNPs synthesis emp

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Vangala, Lakshmisri Manisha. "Size Dependent Antimicrobial Properties of Sugar Encapsulated Gold Nanoparticles." TopSCHOLAR®, 2012. http://digitalcommons.wku.edu/theses/1166.

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The antimicrobial properties of dextrose encapsulated gold nanoparticles (dGNPs) with average diameters of 25 nm, 60 nm, and 120 nm (± 5 nm) synthesized by green chemistry principles were investigated against both Gram-negative and Gram-positive bacteria. Studies were performed involving the effect of the dGNPs on the growth, morphology and the ultrastructural properties of bacteria. dGNPs were found to have significant dose dependent antibacterial activity which was directly proportional to their size and also their concentration. The microbial assays revealed the dGNPs to be bacteriostatic a

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Nethavhanani, Takalani. "Synthesis of zinc oxide nanoparticles by a green process and the investigation of their physical properties." University of the Western Cape, 2017. http://hdl.handle.net/11394/6295.

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Magister Scientiae - MSc (Physics)<br>Zinc oxide (ZnO) is a wide and direct semiconductor with a wurtzite crystal structure. Its multifunctionality as the ideal candidate in applications such as blue-UV light emitting diodes, transparent conducting oxide, selective gas sensor and efficient catalyst support among others, has attracted a significant interest worldwide. Nano-scaled ZnO has been synthesized in a plethora of shapes. A rich variety of physical and chemical methodologies have been used in the synthesis of undoped or doped ZnO. However, such methods either necessitate relatively

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Nixon, Emily Cummings. "Silanes in sustainable synthesis: applications in polymer grafting, carbon dioxide capture, and gold nanoparticle synthesis." Diss., Georgia Institute of Technology, 2012. http://hdl.handle.net/1853/45847.

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Vinyltrialkoxysilanes are grafted onto polyolefins via a radical mechanism; in a subsequent step, the pendant alkoxysilanes hydrolyze and condense upon exposure to water, resulting formation of crosslinks. Straight chain hydrocarbons were used as model compounds to investigate the regioselectivity of vinyltrimethoxysilane grafting. To stabilize the water-sensitive grafted products, the methoxy groups were substituted using phenyllithium. It was found that this reaction must be carried out for a minimum of three days to ensure full substitution. The grafted products were then separated on a wei

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Badwaik, Vivek D. "Single-Step Biofriendly Synthesis of Surface Modifiable, Near-Spherical Gold Nanoparticles for Applications in Biological Detection and Catalysis." TopSCHOLAR®, 2011. http://digitalcommons.wku.edu/theses/1092.

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There is an increased interest in understanding the toxicity and rational design of gold nanoparticles (GNPs) for biomedical applications in recent years. Such efforts warrant reliable, viable, and biofriendly synthetic methodology for GNPs with homogeneous sizes and shapes, particularly sizes above 30 nm, which is currently challenging. In the present study, an environmentally benign, biofriendly, singlestep/ single-phase synthetic method using dextrose as a reducing and capping agent in a buffered aqueous solution at moderate temperature is introduced. The resulting GNPs are near-spherical,

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Damon, Eldon Pierre. "Green synthesis: the use of brown algae in the synthesis of palladium nanoparticles and applications in carbon – carbon bond formation reactions." University of the Western Cape, 2020. http://hdl.handle.net/11394/7721.

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>Magister Scientiae - MSc<br>Due to the negative impact on the environment and the associated biological risks on human and animal life, the need for eco-friendly synthetic protocols is critical. With the rapid advancement in nanotechnology, this extends to the synthesis of nanomaterials. Eco-friendly nanoparticle synthesis protocols have led to the use of fungi, plants and other biological substances, due to their remarkable ability in reducing metal ions. This led to the formation of very efficient hybrid catalysts, which are partially organic/inorganic composites. Palladium nanoparticles ha

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Dill, Kathryn Ann. "Process Optimization for the Synthesis of Gold Nanoparticles from a Mixed Metal Precursor Solution." VCU Scholars Compass, 2018. https://scholarscompass.vcu.edu/etd/5326.

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Separation methods involving a mixture of metals typically include upfront processing that leads to one final product. To lower the waste and ultimately environmental burden, the potential to synthesize multiple functional products from a mixed metal precursor solution is explored. The initial precursor solutions contained varying ratios of gold and copper, gold and nickel, and finally a ternary solution of gold, copper, and nickel. The amount of gold was kept constant, while the amount of copper and/or nickel was sequentially increased. Two separate synthesis processes were tested, the tr

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Pearce, Keenau Mark. "Typha capensis—An electron rich resource for the synthesis of phytochemical-encapsulated gold nanoparticles through green nanotechnology." Thesis, University of the Western Cape, 2020. http://hdl.handle.net/11394/7867.

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Philosophiae Doctor - PhD<br>Typha capensis (T. capensis), commonly known as bulrush, is a medicinal plant found growing in the wetland areas of South Africa. In traditional medicine, rhizome decoctions of T. capensis are used to treat a wide variety of ailments, including venereal disease, dysentery, diarrhoea and low libido in men. Previously, T. capensis rhizomes were shown to be a rich source of antioxidants, such as catechin and epicatechin, inhibiting both reactive oxygen species and reactive nitrogen species. The antioxidant capacity of such plant species serves as a reservoir of electr

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Hayden, Steven C. "Novel applications of nanotechnology in medicine and green energy." Diss., Georgia Institute of Technology, 2012. http://hdl.handle.net/1853/51927.

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The development of techniques for colloidal nanoparticle synthesis has allowed scientists to fabricate materials that can manipulate light on a scale that is small even compared to the wavelength of the light itself. This ability has led to the development of myriad and diverse applications of nanostructures in wide-ranging fields. This thesis focuses on the investigation and exploitation of nanoscale material properties in the fields of medicine and energy. The unique optical properties of nanoparticles arise from their size and their high surface area to volume ratios compared to bulk materi

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Bonincontro, Danilo. "Synthesis and characterization of innovative catalysts for the selective oxidation of 5-hydroxymethylfurfural." Thesis, Lyon, 2019. http://www.theses.fr/2019LYSE1014/document.

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L'épuisement progressif des matières premières d'origine fossile et la nécessité de réduire les émissions de gaz à effets de serre ont conduit la communauté scientifique à rechercher de nouveaux matériaux dont la production ne dépendra pas de ressources non renouvelables. Dans un autre temps ces matériaux pourront déjà être introduits sur le marché afin de substituer des produits déjà existant qui proviennent de matières premières fossiles. Par exemple, l'acide 2,5-furandicarboxylique (FDCA) obtenu par valorisation de la biomasse lignocellulosique est un potentiel substituant de l'acide téréph

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Lyimo, Germana Vincent. "Green synthesised Zinc Oxide Nanoparticles and their antifungal effect on Candida albicans Biofilms." University of Western Cape, 2020. http://hdl.handle.net/11394/7606.

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Magister Scientiae Dentium - MSc(Dent)<br>Candida albicans is a clinical fungal isolate that is most frequently isolated from different host niches, and is implicated in the pathogenesis of several fungal infections, including oral candidiasis. The pathogenesis and antifungal resistance mechanisms of Candida species are complex and involve several pathways and genes. Oral candidiasis incidence rates are rapidly increasing, and the increase in resistance to conventional antifungals has led to the need to develop innocuous and more efficacious treatment modalities. The purpose of this stud

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Mbandezi, Yamkela. "Evaluation of cytotoxic activity of gold nanoparticles naturally synthesised from South African indigenous medicinal plant extracts." University of the Western Cape, 2018. http://hdl.handle.net/11394/6786.

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>Magister Scientiae - MSc<br>Nanotechnology has emerged as a promising field in the quest to address health conditions. Green nanotechnology is a fairly new branch of nanotechnology, which aims to produce and utilize nanomaterials in a way that is safe for living organisms and their environment. Plant extracts are increasingly used in the green synthesis of gold nanoparticles (AuNPs), which involves the reduction of sodium tetrachloroaurate (III) dehydrate by phytochemicals present in the plant extract. It is probable that the green synthesised AuNPs are more biocompatible than chemically synt

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Xiao, Lisong [Verfasser]. "Green Nanochemistry: Synthesis and Surface Functionalization of Tin and Iron Oxide Nanoparticles for Gas Sensing, Imaging (MRI) and Cellular Uptake Applications / Lisong Xiao." München : Verlag Dr. Hut, 2012. http://d-nb.info/1029400318/34.

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Metzke, Sarah. "Synthesis and characterization of transition metal nitrides and carbides for catalysis and electrochemistry application." Bachelor's thesis, Universität Potsdam, 2013. http://opus.kobv.de/ubp/volltexte/2014/6983/.

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It was the goal of this work to explore two different synthesis pathways using green chemistry. The first part of this thesis is focusing on the use of the urea-glass route towards single phase manganese nitride and manganese nitride/oxide nano-composites embedded in carbon, while the second part of the thesis is focusing on the use of the “saccharide route” (namely cellulose, sucrose, glucose and lignin) towards metal (Ni0), metal alloy (Pd0.9Ni0.1, Pd0.5Ni0.5, Fe0.5Ni0.5, Cu0.5Ni0.5 and W0.15Ni0.85) and ternary carbide (Mn0.75Fe2.25C) nanoparticles embedded in carbon. In the interest of bat

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Dengo, Nicola. "Ligand-free water-based approaches for the synthesis of metal sulfides nanostructures." Doctoral thesis, Università degli studi di Padova, 2019. http://hdl.handle.net/11577/3424863.

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In this Thesis, metal sulfides were synthesized through water-based and ligand-free synthetic routes. A simple batch approach was successfully employed for the synthesis of ZnS, CuS, PbS, MnS and Ag2S in a crystalline form at a temperature near 0 °C without employing ligands or stabilizing agents. Particles dimension, crystal structure, surface composition and susceptibility to oxidation phenomena of these materials were assessed. In the case of the batch synthesis of ZnS, a SAXS (Small Angle X-Ray Scattering) in-situ study was also performed to elucidate the dimensional evolution of the obtai

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Yang, Xiaomin. "Development of multimodal nanoplatforms to improve the performances of radiotherapy and evaluation of the impact of nanoparticles on proteins A Facile One-Pot Synthesis of Versatile PEGylated Platinum Nanoflowers and Their Application in Radiation Therapy Human serum albumin in the presence of AGuIX nanoagents: Structure stabilisation without direct interaction Green one-step synthesis of medical nanoagents for advanced radiation therapy. Advanced Healthcare Materials." Thesis, université Paris-Saclay, 2020. http://www.theses.fr/2020UPASS091.

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La radiothérapie est utilisée pour 50% des traitements contre le cancer. Cependant, sa mise en œuvre est limitée par la tolérance des tissus sains. De nouvelles stratégies associant nanomédecine et radiothérapie anticancéreuse ont été proposées il y a une dizaine d'années pour améliorer les performances des traitements. Un intérêt croissant est apparu pour les nanoparticules (NP) de Z élevé faites de métal en tant que radio-amplificateurs potentiels, pour augmenter les effets des radiations,Dans la première partie de mon travail, une méthode de radiolyse efficace et unique a été optimisée pour

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Pires, Natalia da Rocha. "SÃntese verde e parcialmente verde de nanopartÃculas de prata estabilizadas por galactomanana da fava danta." Universidade Federal do CearÃ, 2013. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=10272.

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NanopartÃculas de prata Ã um tÃpico de destaque dentre os materiais nanoestruturados, por exibirem propriedades Ãpticas e eletromagnÃticas diferente das observadas no metal agregado, alÃm de uma excelente atividade bactericida, sendo essa propriedade uma das mais investigadas. A sÃntese e a estabilizaÃÃo verdes de nanopartÃculas de prata (NPAg) visa a reduÃÃo ou a substituiÃÃo de reagentes usados nos processos convencionais, minimizando assim o efeito nocivo dos mesmos ao meio ambiente. O uso de polissacarÃdeos Ã uma alternativa verde, tanto no perspectiva de redutor ou como estabilizante. A p

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Johnson, Carol A. "Observations and assessment of iron oxide nanoparticles in metal-polluted mine drainage within a steep redox gradient, and a comparison to synthetic analogs." Diss., Virginia Tech, 2014. http://hdl.handle.net/10919/64979.

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The complex interactions at the interfaces of minerals, microbes, and metals drive the cycling of iron and the fate and transport of metal(loid)s in contaminated systems. The former uranium mine near Ronneburg, Germany is one such system, where slightly acidic mine drainage crossing a steep redox gradient (groundwater outflow into a stream) forms and transforms iron (oxy)hydroxide nanoparticles. These particles interact with toxic metal(loid)s in water and sediments. Iron oxidizing and reducing bacteria also play a role in these processes. Biogeochemical reactions are influenced by nanoscale p

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Silva, Rodrigo Costa da. "SÃntese de NanopartÃculas de Prata com Extrato Aquoso das Sementes de Girassol (Helianthus annus) e Galactomanana da Fava Danta (Dimorpharndra gardneriana Tul.)." Universidade Federal do CearÃ, 2014. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=11692.

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CoordenaÃÃo de AperfeiÃoamento de Pessoal de NÃvel Superior<br>As nanopartÃculas metÃlicas apresentam inÃmeras aplicaÃÃes, como na construÃÃo de sensores, microeletrÃnica, catÃlise, aÃÃo bactericida, cÃlulas fotovoltaicas, entre outras. Dentre elas, a nanopartÃculas de prata (NPAg) tem ganhado destaque, em especial pela a sua atividade bactericida e por exibirem propriedades Ãpticas e eletromagnÃticas diferentes das observadas no metal agregado. VÃrias metodologias de sÃntese de nanopartÃculas de prata jÃ foram desenvolvidas. Para substituir os mÃtodos clÃssicos, que se baseiam na reduÃÃo dos

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Norager, Sebastian Jon. "Synthesis of semiconductor nanoparticles." Thesis, Imperial College London, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.398055.

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Krishnadasan, Siva Haran. "Intelligent synthesis of nanoparticles." Thesis, Imperial College London, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.498918.

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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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Pigozzi, Giancarlo. "Intermetallic nanoparticles: synthesis and characterization /." Zürich : ETH, 2006. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=16552.

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Alm, Oscar. "Heterogeneous Photolytic Synthesis of Nanoparticles." Doctoral thesis, Uppsala University, Department of Materials Chemistry, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-8256.

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<p>Nanoparticles of iron, cobalt and tungsten oxide were synthesised by photolytic laser assisted chemical vapour deposition (LCVD). An excimer laser (operating at 193 nm) was used as an excitation source. The LCVD process, was monitored <i>in situ</i> by optical emission spectroscopy (OES). The synthesised particles were further analysed using transmission electron spectroscopy (TEM), X-ray diffraction (XRD), high resolution scanning electron microscopy (HRSEM), X-ray fluorescence spectroscopy (XRF), X-ray photoelectron spectroscopy (XPS) and Raman spectroscopy.</p><p>Iron and cobalt single c

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Malyshev, Dimitriy. "Photochemical Synthesis of Niobium Nanoparticles." Thèse, Université d'Ottawa / University of Ottawa, 2014. http://hdl.handle.net/10393/30999.

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This thesis focuses on the development of method to the photochemical synthesis of niobium nanoparticles (NbNP) using Irgacure 907 (I-907) photoinitiator. This investigation is composed of two parts; whereas the mechanistic study of formation of particles was investigated first, and then followed by particles property characterization. By studying the mechanism of formation we were able to obtain knowledge on how to control the size of NbNP. This knowledge provided us with ability to generate a library of nanoparticles with the varying sizes. Furthermore, the study of I-907 photoproducts has g

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Wan, Congshan. "Functional nanoparticles: synthesis and simulation." Thesis, Georgia Institute of Technology, 2014. http://hdl.handle.net/1853/53074.

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Functional nanoparticles have garnered considerable attention due to their intriguing physical properties at the nanoscale for a broad range of applications, such as photocatalysis, capacitive energy storage, thermoelectric power generation, solar energy harvesting, flexible and transparent electronics, drug delivery, biomolecular electronics, and analytic chemistry, etc. Successful synthesis of nanoparticles and precise control over their shapes are critical to achieving desired functions. In the first part of my thesis, an effective synthetic route to plain nanoparticles is briefly introduce

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Leech, R. "Synthesis and manipulation of nanoparticles." Thesis, University College London (University of London), 2014. http://discovery.ucl.ac.uk/1425278/.

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This thesis investigated the synthesis of a series of water-‐soluble metal and semiconductor nanoparticles followed by an investigation into their applications as non-‐antibiotic based antimicrobial agents and to plasmonic structures. Nanoparticles exhibit unique chemical, physical and optical properties unseen in bulk material. These properties can be tuned with the particle dimensions and surface groups to be exploited in biological, chemical, optical and electronic applications. Before the properties can be used however, robust and reliable synthetic procedures must be developed to produc

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Mal, Joyabrata. "Microbial synthesis of chalcogenide nanoparticles." Thesis, Paris Est, 2016. http://www.theses.fr/2016PESC1136/document.

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Ces dernières années ont vu un intérêt croissant pour l'application de nanoparticules de chalcogénure (IP) (par exemple Se, Te) dans divers secteurs industriels, y compris l'énergie, les aciers, le verre et le raffinage du pétrole. Le chalcogénure métallique fluorescent (par exemple CdSe, CdTe) NPs sont utilisés dans les cellules solaires, les capteurs optoélectroniques et aussi dans le domaine de la biologie et de la médecine pour l'imagerie ou de détection comprenant biolabelling. En outre, en raison de la forte toxicité des oxyanions chalcogènes (à savoir, sélénite, séléniate, tellurites et

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Bahadory, Mozhgan Solomon Sally. "Synthesis of noble metal nanoparticles /." Philadelphia, Pa. : Drexel University, 2008. http://hdl.handle.net/1860/2901.

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David, Anand. "Bioinspired synthesis of magnetic nanoparticles." [Ames, Iowa : Iowa State University], 2009.

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Podhorska, Lucia. "Polymer-templated synthesis of nanoparticles." Thesis, Imperial College London, 2016. http://hdl.handle.net/10044/1/58219.

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This thesis describes the synthesis of nanoparticles in the cores of spherical micelles of poly(styrene)-b-poly(2-vinylpyridine) (PS-b-P2VP) and the subsequent deposition of these nanoparticle loaded micelles onto substrates, generating self-assembled nanomaterials with precisely-tuned regularly-spaced nanoparticles. Combining this bottom-up method of nanopatterning with top-down lithographic techniques allowed for the production of more complex surface patterns. Specifically, nanoparticles of Au, ZnS and Ag2S were synthesized. The formation mechanism of ZnS and Au nanoparticles were investiga

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Peña, David Jude. "Synthesis and characterization of novel nanoparticles." Full text available online (restricted access), 2001. http://images.lib.monash.edu.au/ts/theses/Pena.pdf.

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Hedkvist, Olof. "Synthesis and Characterization of Gold Nanoparticles." Thesis, KTH, Fysik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-129281.

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This thesis is focused on the synthesis of three different shapes of gold nanoparticles; the gold nanosphere, the gold nanorod and the gold nanocube. These will be synthesized using wet chemistry methods and characterized using UV-Vis- NIR spectroscopy and dynamic light scattering. The results will be used to draw some conclusions as to what factors influence the growth of gold nanoparticles.

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