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Dissertations / Theses on the topic 'ZINC OXIDE NANOPARTICLE'

Author: Grafiati
Published: 11 September 2023
Last updated: 25 July 2025

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1

Lennox, Martin. "Synthesis of zinc / zinc oxide nanoparticle-carbon nanotube composites." Thesis, McGill University, 2014. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=121192.

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This thesis presents a novel process for the synthesis of zinc/zinc oxide nanoparticle-carbon nanotube composites. The process combines aerosol flow condensation for the synthesis of nanoparticles with a radio-frequency glow discharge in order to facilitate the deposition of these nanoparticles on nanostructured surfaces consisting of carbon nanotubes grown directly on stainless steel substrates. The design, construction and optimization of the process is described. A maximum observed nanoparticle deposition rate of 500 nm/min was observed when layers of nanoparticles were deposited on silicon
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2

McQuillan, Jonathan. "Bacterial-nanoparticle interactions." Thesis, University of Exeter, 2010. http://hdl.handle.net/10036/3101.

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Bionanotechnology is an intersection between biology and nanotechnology, a field in which novel applications for very small materials are being realised at an alarming rate. Nanoparticles have 3 dimensions that can be measured in nanometers, their small size conferring upon them different properties from individual atoms or the bulk material. The interactions between these unique materials and microorganisms are often toxic, thus have been exploited for antimicrobial applications. However, there is a considerable paucity of data for the underlying molecular mechanisms. This study has been carr
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3

Walker, Nicholas David Leyland. "The role of the nano-environmental interface in ZnO and CeO2 nanoparticle ecotoxicology." Thesis, University of Exeter, 2012. http://hdl.handle.net/10036/3734.

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An increase in nanotechnology has seen an associated rise in nanoparticles released into the environment. Their potential toxicity and exposure to humans and the environment, the field of nanoecotoxicology, is not yet well understood. The interactions at the nanoparticle surface will play a fundamental role in the nanoparticle behaviour once released into the environment. This study aims to characterise the particle surface interaction, determining key parameters influential in the nanoparticle fate. Evanescent Wave Cavity Ring Down Spectroscopy techniques have been applied to study molecular
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4

Khoza, Phindile Brenda. "Phthalocyanine-nanoparticle conjugates for photodynamic therapy of cancer and phototransformation of organic pollutants." Thesis, Rhodes University, 2015. http://hdl.handle.net/10962/d1017918.

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The synthesis and extensive spectroscopical characterization of novel phthalocyanines are reported. The new compounds were characterized by elemental analysis, FT-IR, ¹HNMR, mass spectrometry and UV–Vis spectroscopy. The new phthalocyanines showed remarkable photophysicochemical behaviour. The novel phthalocyanines were then conjugated to nanoparticles, silver and ZnO. The coupling of the novel Pcs to nanoparticles was through covalent bonding and ligand exchange. These conjugates were supported onto electrospun polystyrene fibers and chitosan microbeads for use as photocatalysts. The efficien
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5

Gunti, Srikanth. "Enhanced Visible Light Photocatalytic Remediation of Organics in Water Using Zinc Oxide and Titanium Oxide Nanostructures." Scholar Commons, 2017. http://scholarcommons.usf.edu/etd/6852.

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The techniques mostly used to decontaminate air as well as water pollutants have drawbacks in terms of higher costs, require secondary treatment, and some methods are very slow. So, emphasis has been given to water though the use of photocatalysts, which break organic pollutants to water and carbon dioxide and leave no trace of by-products at the end. Photocatalytic remediation aligns with the waste and wastewater industries’ zero waste schemes with lower cost, eco-friendly and sustainable treatment technology. The commonly used photocatalysts such as titanium oxide (TiO2), zinc oxide (ZnO), t
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6

Louka, Chrysovalanto. "Controlling the toxicity of zinc oxide nanowires in vitro skin models." Thesis, Université Grenoble Alpes, 2020. https://thares.univ-grenoble-alpes.fr/2020GRALU004.pdf.

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Les nanofils d'oxyde de zinc (ZnONW) attirent beaucoup d'attention scientifique en raison de leurs propriétés optoélectriques, piézoélectriques et semi-conductrices, qui en font un bon candidat pour les capteurs et l'électronique intégrées dans les textiles. Ces applications augmentent les risques d'exposition cutanée, de qui rend l’étude de leur toxicité cruciale, d'autant plus que les études récentes démontrent une toxicité liée aux ions de zinc due à la dissolution. Malheureusement, la compréhension de l'impact des ZnONWs sur la peau est limitée. Par conséquent, l'objectif de ce projet est
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7

Wong, Ka-kan, and 黃嘉勤. "Investigation on the effect of ZnO nanoparticle properties on dye sensitized solar cell performance." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2012. http://hub.hku.hk/bib/B49618246.

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Zinc oxide (ZnO) is a wide band-gap semiconductor that is of interest for application in dye sensitized solar cells (DSSCs) because of similarity of its properties to TiO2. Unlike TiO2, ZnO can readily be grown in a wide variety of morphologies, using inexpensive, simple, and low temperature methods. Recent research on ZnO-based DSSCs focuses on modifying the ZnO layer morphology in order to maximize surface area, and enhance the electron collection by providing fast electron transport. It is expected that the improvement in cell performance by morphology modification is due to higher dye loa
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8

Ruankham, Pipat. "Studies on Morphological Effects and Surface Modification of Nanostructured Zinc Oxide for Hybrid Organic/Inorganic Photovoltaics." Kyoto University, 2014. http://hdl.handle.net/2433/188820.

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9

CRAPANZANO, ROBERTA. "Insight into ZnO luminescence to engineer nanoparticles for X-Ray based cancer treatment." Doctoral thesis, Università degli Studi di Milano-Bicocca, 2022. http://hdl.handle.net/10281/366193.

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Nanoparticles disclose unique properties that enable their applications in different fields, such as energy, catalysis, opto-electronics, and medicine. At the nanosize, the surface-to-volume ratio is increased, leading to the formation of defects that influence the resultant features, e.g. the catalytic and optical behaviours of the systems. Moreover, the high surface area and reactivity of nanoparticles allow their functionalization with several ligands, enhancing their versatility, especially in the biomedical field. Indeed, the accuracy and efficiency of several diagnoses and treatments ma
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10

Mileyeva-Biebesheimer, Olga. "An Investigation into Metal Oxide Nanoparticle Toxicity to Bacteria in Environmental Systems Using Fluorescence Based Assays." University of Toledo / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1302125170.

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11

Wangensteen, Ted. "Growth And Characterization Of Functional Nanoparticulate Films By A Microwave Plasma-Assisted Spray Deposition Process." Scholar Commons, 2012. http://scholarcommons.usf.edu/etd/4417.

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Nanoparticle and nanoparticulate films have been grown by a unique approach combining a microwave and nebulized droplets where the concentration and thus the resulting particle size can be controlled. The goal of such a scalable approach was to achieve it with the least number of steps, and without using expensive high purity chemicals or the precautions necessary to work with such chemicals. This approach was developed as a result of first using a laser unsuccessfully to achieve the desired films and particles. Some problems with the laser approach for growing desired films were solved by
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12

Rhodes, Rhys William. "Controlling the morphology of nanoparticle-polymer composite films for potential use in solar cells." Thesis, University of Manchester, 2011. https://www.research.manchester.ac.uk/portal/en/theses/controlling-the-morphology-of-nanoparticlepolymer-composite-films-for-potential-use-in-solar-cells(6bc2a3cc-7c11-4615-a202-bead6360af99).html.

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This thesis presents an investigation into the factors affecting the morphology of hybrid inorganic/organic photoactive layers used in photovoltaic cells. Although optimisation of the organic (polymer) phase has received substantial attention, research into the morphology of the inorganic phase (semiconducting nanocrystals) remains limited. It is believed that there is a strong link between the morphology of the final photoactive film and the quality of the initial nanocrystal dispersion. To this end, two nanocrystal systems were investigated; zinc oxide (ZnO) and lead sulphide (PbS). ZnO nano
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13

McCracken, Christie Joy. "Toxicity of Food-Relevant Nanoparticles in Intestinal Epithelial Models." The Ohio State University, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=osu1437688702.

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14

Raevskaya, A. E., Ya V. Panasiuk, O. L. Stroyuk, et al. "Spectral and luminescent properties of ZnO–SiO2 core–shell nanoparticles with size-selected ZnO cores." Universitätsbibliothek Chemnitz, 2015. http://nbn-resolving.de/urn:nbn:de:bsz:ch1-qucosa-161737.

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Deposition of silica shells onto ZnO nanoparticles (NPs) in dimethyl sulfoxide was found to be an efficient tool for terminating the growth of ZnO NPs during thermal treatment and producing stable core–shell ZnO NPs with core sizes of 3.5–5.8 nm. The core–shell ZnO–SiO2 NPs emit two photoluminescence (PL) bands centred at [similar]370 and [similar]550 nm originating from the direct radiative electron–hole recombination and defect-mediated electron–hole recombination, respectively. An increase of the ZnO NP size from 3.5 to 5.8 nm is accompanied by a decrease of the intensity of the defect PL b
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15

Taylor, Cameron S. "Characterisation of engineered nanoparticles and their interaction with natural biological and non-biological material." Thesis, University of Oxford, 2014. http://ora.ox.ac.uk/objects/uuid:03810528-de65-4094-907c-8c0d4e0386c8.

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Form, mobility, toxicity and the eventual fate of engineered nanomaterials in environmental ecosystems are currently not well defined and are needed to improve risk assessment and legislation. The present study subjected uncoated zinc oxide (ZnO) nanoparticles (30nm and 200nm) and coated silver (Ag) nanoparticles (Paraffin: 3-8nm and citrate/PVP: 50nm) to different ionic strength media and different types of algal/bacterial extracellular-polymeric species (EPS) at long (6 months) and short (2 weeks) timescales. Changes in particle size distribution and stability were examined using a multi-met
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16

Pokhrel, Lok R., and Phillip R. Scheuerman. "Ecological Risk Assessment of Zinc Oxide Nanoparticles." Digital Commons @ East Tennessee State University, 2012. https://dc.etsu.edu/etsu-works/2962.

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17

Pokhrel, Lok R., Brajesh Dubey, and Phillip R. Scheuerman. "Ecological Risk Assessment of Zinc Oxide Nanoparticles." Digital Commons @ East Tennessee State University, 2012. https://dc.etsu.edu/etsu-works/2951.

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18

Hernández, Viezcas José Angel. "Toxicity of zinc oxide and cerium oxide nanoparticles to mesquite (Prosopis juliflora-velutina)." To access this resource online via ProQuest Dissertations and Theses @ UTEP, 2009. http://0-proquest.umi.com.lib.utep.edu/login?COPT=REJTPTU0YmImSU5UPTAmVkVSPTI=&clientId=2515.

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19

Hancock, Jared M. "Formation and Analysis of Zinc Oxide Nanoparticles and Zinc Oxide Hexagonal Prisms and Optical Analysis of Cadmium Selenide Nanoparticles." BYU ScholarsArchive, 2013. https://scholarsarchive.byu.edu/etd/3867.

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In this dissertation, methods to synthesize ZnO are reported. First, zinc oxide nanoparticles were synthesized with small amounts of transition metal ions to create materials called dilute magnetic semiconductors (DMS). We employed a low temperature sol-gel method that produces ZnO nanoparticles of reproducible size and incorporates cobalt, nickel, and manganese ions into the nanoparticles. Conditions were controlled such that a range of amounts of Co, Ni, and Mn were incorporated. The incorporation was tracked by color changes in the white ZnO powder to blue for Co, green for Ni and yellow fo
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20

Lopes, Sílvia Ferreira. "Effect of zinc oxide nanoparticles in Daphnia magna." Master's thesis, Universidade de Aveiro, 2012. http://hdl.handle.net/10773/10258.

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Mestrado em Biologia Aplicada - Toxicologia e Ecotoxicologia<br>O rápido desenvolvimento da nanotecnologia com o consequente aumento na produção de nanopartículas e nanoprodutos oferece muitas oportunidades mas também muitos desafios. A nanotecnologia tem vindo a ser descrita como uma área multidisciplinar que visa desenvolver uma variedade de nanoparticulas para aplicações medicinais e industriais. As propriedades que trazem às nanoparticulas especial atenção – pequeno tamanho, elevada área de superfície e consequente elevado grau de reatividade – podem também torná-las potencialment
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21

Doumandji, Zahra. "Identification de marqueurs d’exposition et d’effets de nanoparticules métalliques sur modèle in vitro." Thesis, Université de Lorraine, 2019. http://www.theses.fr/2019LORR0067.

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En conséquence de l'extension de l’utilisation des nanoparticules dans différents secteurs industriels, le nombre de travailleurs potentiellement exposés ne cesse de croître, sans parfaitement connaître les propriétés toxicologiques de ces matériaux. Étant donné que les nanoparticules peuvent se trouver en suspension dans l’atmosphère professionnelle, l'inhalation représente une voie d'exposition professionnelle majeure. De ce fait, l’évaluation des risques liés à l’exposition aux nanomatériaux requiert d’entreprendre des études de toxicologie sur des modèles cellulaires des voies aériennes. D
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22

Piot, Lucas. "Influence de l’énergie d’interface sur les transitions de phase sous pression : étude de nanoparticules d’oxydes fonctionnels." Thesis, Lyon 1, 2013. http://www.theses.fr/2013LYO10238/document.

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La modification des diagrammes de phase sous pression dans les nanomatériaux en comparaison de matériaux massifs est généralement reliée de façon univoque à l'énergie de surface. L'objectif de ce travail a consisté à étudier l'influence de l'énergie d'interface, définie par l'état de surface (défauts cristallins et chimie de surface) et l'énergie de surface, sur le comportement à haute pression de différents nanomatériaux pour lesquels un effet de taille est fréquemment rapporté. Le contrôle et la caractérisation de l'état de surface de nanoparticules d'Y2O3 nous ont permis de montrer que l'am
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23

Elhaj, Baddar Zeinah. "ENGINEERING ZINC OXIDE NANOPARTICLES TO BE USED AS NANOFERTILIZERS." UKnowledge, 2018. https://uknowledge.uky.edu/pss_etds/109.

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Zinc deficient soils, or soils with low Zn bioavailability, are widespread, which exacerbates Zn deficiency in human as crops grown on these soils have low Zn content. Often crop yields are also compromised. Fertilizers based on soluble Zn salts often have limited efficacy in such soils. In this research, we evaluate the performance of polymer coated and bare ZnO nanoparticles (NPs) in an attempt to overcome limitations of soluble Zn salts in alkaline soils. We first synthesized 20-30 nm bare ZnO NPs with different surface chemistries to impart colloidal stability to the particles. Bare ZnO we
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24

Shortell, Matthew P. "Zinc oxide quantum dot nanostructures." Thesis, Queensland University of Technology, 2014. https://eprints.qut.edu.au/76335/4/Matthew_Shortell_Thesis.pdf.

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Zinc oxide (ZnO) is one of the most intensely studied wide band gap semiconductors due to its many desirable properties. This project established new techniques for investigating the hydrodynamic properties of ZnO nanoparticles, their assembly into useful photonic structures, and their multiphoton absorption coefficients for excitation with visible or infrared light rather than ultraviolet light. The methods developed are also applicable to a wide range of nanoparticle samples.
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25

Johnson, Clint Edwin. "In vitro toxicity assessment of silver and zinc oxide nanoparticles." University of Western Australia. School of Biomedical, Biomolecular and Chemical Sciences, 2010. http://theses.library.uwa.edu.au/adt-WU2010.0119.

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Nanotoxicology is a nascent field of study concerned with the potential for nanotechnology to adversely impact human health or result in ecological damage. Nanomaterials can display unique physicochemical properties not present in the parent bulk material and it is these properties that may be a potential source of toxicity. There are a growing number of examples of nanomaterials functioning differently in biosystems compared to the parent bulk material. With the rapid growth of nanotechnology and increasing exposure of people to novel nanomaterials there is an urgent need to evaluate the toxi
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26

O'Rourke, Shona Aisling. "The environmental toxicology of zinc oxide nanoparticles to the oligochaete." Thesis, Heriot-Watt University, 2013. http://hdl.handle.net/10399/2681.

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This thesis investigated the potential toxicity of zinc oxide nanoparticles (NPs) and bulk particles (both with and without organic matter (HA)) to the Californian Blackworm, Lumbriculus variegatus. The NPs and bulk particles in this thesis were characterised using numerous techniques. ZnO NPs were found to be 91 (13364) nm (median (interquartile range)) and ZnO bulk particles were found to be 237 (322165) nm (median (interquartile range)) by TEM. In the acute behavioural study (96 hour), ZnO NPs had a dose-dependent toxic effect on the behaviour of the worms up to 10mg/L whereas the bulk had
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27

Fernando, Joseph F. S. "Crystal seeding and photochemistry of gold-zinc oxide hybrid nanoparticles." Thesis, Queensland University of Technology, 2016. https://eprints.qut.edu.au/101206/1/Joseph_Fernando_Thesis.pdf.

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This project investigated the synthesis of hybrid nanoparticles of gold and zinc oxide by using photodeposition and crystal seeding approach. The study extended our understanding of the factors that determine nanocrystal size, shape and ratio of gold and zinc oxide in the hybrid system. Control at this scale is important from a materials-engineering viewpoint and for technological applications such as nonlinear optics, photocatalysis and photovoltaics. This research found that nonlinear optical absorption of zinc oxide can be enhanced by several orders of magnitude by coupling zinc oxide nanop
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28

Ntozakhe, Luyolo. "Synthesis of modified zinc oxide nanoparticles using pneumatic spray pyrolysis for solar cell application." Thesis, University of Fort Hare, 2017. http://hdl.handle.net/10353/5862.

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In this work, the pneumatic spray pyrolysis was used to synthesize un-doped and carbon doped zinc oxide (ZnO) nanoparticles. The zinc acetate, tetrabutylammonium bromide and ethanol were used as starting materials for the desired ZnO nanoparticles and the prepared samples were annealed at 400 oC in the furnace. The as synthesized un-doped and carbon doped ZnO NPs were evaluated using X-ray diffraction (XRD), Scanning electron microscope (SEM), Energy dispersive x-ray spectroscopy (EDX), High-resolution transmission electron microscopy (HRTEM), Raman spectroscopy (RS) and Ultraviolet-visible sp
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29

Abou, Chaaya Adib. "Conception de nanomatériaux à base d'oxyde par ALD : de la détection aux membranes." Thesis, Montpellier 2, 2014. http://www.theses.fr/2014MON20117/document.

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Conception de nanomatériaux à base d'oxyde par ALD : de la détection aux membranes<br>In this context, the aim of this PhD work is the synthesis of different nanostructured materials based on ALD oxide thin film (Al2O3, ZnO and Al2O3/ZnO nanolaminates) deposited on different types of substrates such as silicon substrate, glass, nanofibers, multipores and monopores membranes, PET and gold coated nickel dogbones. ALD deposition was performed on those substrates with changing the film thickness (number of cycles), the deposition temperature, and the film composition (doping, multilayers etc.). Af
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Sharma, Vyom. "An investigation into the mechanism of toxicity of zinc oxide nanoparticles." Thesis, University of Bradford, 2011. http://hdl.handle.net/10454/5421.

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The wide scale use of ZnO nanoparticles (NPs) in the world consumer market has resulted in likelihood of exposure to human beings. The present study was aimed to assess the in vitro and in vivo interactions of ZnO NPs in the mammalian system and to elucidate the possible mechanism of their toxicity. Our in vitro results using human epidermal cells (A431), primary human epidermal keratinocytes and human liver cells (HepG2) demonstrated that cells exposed to ZnO NPs exhibit a decrease in cell viability which was independent of NP dissolution. ZnO NPs also induced oxidative DNA damage as evidence
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31

Alasvand, Zarasvand Azita. "Comparative Analysis of Zinc Oxide Nanoparticles Induced Transcriptomic Responses in Arabidopsis." Thesis, North Dakota State University, 2019. https://hdl.handle.net/10365/31694.

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The impact that zinc oxide nanoparticles (ZnONP) have on plant physiological responses was evaluated by comparing gene expression changes after Arabidopsis thaliana plants were exposed to ZnONP, in comparison with ionic Zn2+ (ZnSO4) and non-treated controls. After treatment with ZnONP (concentration10 μg L−1), ionic Zn2+ (applied as ZnSO4 at a concentration of 19.7 μg/ L −1), expression analyses via RNA sequencing revealed that 369 genes were down regulated and 249 were upregulated (p < [FDR] 0.05, expression difference < 3). The downregulated genes in ZnONP treated seedlings compared to the Z
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Wallace, Rachel. "Physicochemical characterisation of zinc oxide nanoparticles for use in toxicity studies." Thesis, University of Leeds, 2013. http://etheses.whiterose.ac.uk/5899/.

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This thesis is focused on the detailed physicochemical characterisation of zinc oxide (ZnO) nanoparticles (NPs) intended for use in toxicological investigations. A characterisation protocol has been developed in order to determine detailed physicochemical characteristics of 5 ZnO NP samples, selected to investigate in in vitro toxicity assays. The characterisation protocol aims to establish the samples’ distribution of particle sizes, morphology, crystallinity, phase content, purity, surface composition, dispersion and solubility and as such includes the following techniques: inductively coupl
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33

Valour, Arnaud. "Synthèse d'oxyde de zinc dopé azote sous formes de poudre et de couche mince : caractérisation du type de semiconductivité." Thesis, Rennes 1, 2017. http://www.theses.fr/2017REN1S014/document.

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Cette thèse fait suite à des travaux ayant permis, de manière non reproductible, la stabilisation de l’oxyde de zinc de type-p (p-ZnO:N) sur une période de plus de deux ans par décomposition de ZnO2 sous flux de NH3. L’objectif de ces travaux était de maîtriser de manière reproductible la synthèse de p-ZnO:N sous formes de poudre, puis de couche mince, dans l’optique de réaliser des homojonctions p-ZnO:N/n-ZnO ayant de potentielles applications dans le domaine de l’optoélectronique. Dans ce but, différents paramètres de la synthèse ayant permis initialement l’obtention de p-ZnO:N fortement lac
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Allard, Garvin Richard Johan. "Synthesis and characterization of zinc-doped magnetic nanoparticles for diagnostic studies." University of the Western Cape, 2015. http://hdl.handle.net/11394/4815.

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Magister Scientiae - MSc<br>In the present study we report the synthesis and characterization of iron oxide magnetic nanoparticles doped with zinc in an attempt to enhance the magnetic properties. The nanoparticles were prepared via the co-precipitation route and capped with 3-phosphonopropionic acid (3-PPA). The amount of zinc dopant was varied to yield nanoparticles with the general formula ZnxFe3-xO4 (x=0, 0.1, 0.2, 0.3, 0.4). Characterization was carried out using high resolution transmission electron microscopy (HRTEM), X-ray diffraction spectroscopy (XRD), energy-dispersive X-ray spectro
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Orchard, Katherine Lorraine. "The mild synthesis of zinc oxide nanoparticles and nanocomposites via hydrolysis of well-characterised zinc organometallics." Thesis, Imperial College London, 2011. http://hdl.handle.net/10044/1/17786.

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This thesis centres on the development of a clean, one step method for generating surface-functionalised zinc oxide (ZnO) nanoparticles for application in the synthesis of well-dispersed inorganic-organic nanocomposites. The nanoparticle synthesis method utilises the controlled hydrolysis of organometallic zinc compounds, employing diethylzinc as a bulk precursor and an alkylzinc carboxylate as a substoichiometric, secondary precursor to deliver the capping ligands. A series of ethylzinc carboxylate species were synthesised and studied by NMR spectroscopy (EtZn(OOCR); R = H, CH3, and (CH2)nCH3
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Hirschmann, Johannes [Verfasser], and Marcus [Akademischer Betreuer] Halik. "Electrical Characteristics of Functionalized Zinc Oxide Nanoparticles / Johannes Hirschmann. Gutachter: Marcus Halik." Erlangen : Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 2014. http://d-nb.info/1054342687/34.

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Urban, Ben E. "Zinc Oxide Nanoparticles for Nonlinear Bioimaging, Cell Detection and Selective Cell Destruction." Thesis, University of North Texas, 2013. https://digital.library.unt.edu/ark:/67531/metadc271908/.

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Light matter interactions have led to a great part of our current understanding of the universe. When light interacts with matter it affects the properties of both the light and the matter. Visible light, being in the region that the human eye can "see," was one of the first natural phenomenon we used to learn about our universe. The application of fundamental physics research has spilled over into other fields that were traditionally separated from physics, being considered two different sciences. Current physics research has applications in all scientific fields. By taking a more physical ap
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38

Wilkinson, John Henry. "Picosecond time-resolved photoluminescence of zinc oxide single crystals, films and nanoparticles /." Electronic thesis, 2003. http://etd.wfu.edu/theses/available/etd-09162005-083525/.

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39

Young, Michael I. "Synthesis of zinc oxide nanoparticles with different morphologies by wet chemistry routes." Thesis, Loughborough University, 2016. https://dspace.lboro.ac.uk/2134/25368.

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The objectives of this project were to synthesise semi-conducting ceramic nanoparticles including zinc oxide (ZnO) and aluminium doped zinc oxide (AZO) through a wet chemistry route to obtain nanoparticles with a controlled size and morphology. Wet chemistry methods (co-precipitation method and hydrothermal method) were used to synthesise ZnO and AZO particles. In the synthesis, various compounds and morphologies were synthesised. ZnO, Zn(OH)2 and unknown phases were co-precipitated, with only ZnO obtained following hydrothermal treatment. Morphologies ranging from platelets, flower-like, nano
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Pokhrel, Lok R., Brajesh Dubey, and Phillip R. Scheuerman. "Developmental Phytotoxicity of Silver and Zinc Oxide Nanoparticles to the Crop Plants." Digital Commons @ East Tennessee State University, 2012. https://dc.etsu.edu/etsu-works/2950.

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41

Zhu, Yao. "ZnO nanoparticles as a luminescent down-shifting layer for solar cells." Thesis, Lyon, INSA, 2015. http://www.theses.fr/2015ISAL0090/document.

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Le but de cette thèse était de concevoir des matériaux à base de nanoparticules de ZnO qui puissent être utilisés de manière efficaces comme couche de down-shifting sur la face avant des cellules solaires photovoltaiques. Le défi principal a donc été d’obtenir des nanoparticules de ZnO avec un rendement de photoluminescence (PL QY) aussi élevé que possible. Diverses méthodes ont été et comparées utilisées pour la synthèse de nanoparticules de ZnO. Nous avons en premier lieu étudié des particules synthétisées par voie physique (le dépôt par jet d’agrégats de basse énergie, LECBD). Les particule
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Saliba, Sarmenio. "Thermotropic and lyotropic liquid crystals for the formation of zinc oxide nanohybrids." Toulouse 3, 2011. http://thesesups.ups-tlse.fr/1598/.

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Le travail présenté dans ce manuscrit décrit l'incorporation de matériaux inorganiques à l'intérieur des matrices organiques. Notre ambition était de réussir à hybrider des nanostructures de ZnO avec des matériaux cristal liquides (CL). Ceci a été réalisé en utilisant différentes stratégies, dont le choix dépendait des propriétés finales du matériau. L'objectif était non seulement de réaliser la synthèse et la stabilisation des nanoparticules (NP), mais aussi d'étudier leur organisation dans un milieu cristal liquide. A cette fin, la première approche envisagée a consisté dans la fonctionnalis
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43

Scown, Tessa M. "Uptake and effects of nanoparticles in fish." Thesis, University of Exeter, 2009. http://hdl.handle.net/10036/93696.

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Nanotechnology is a rapidly growing industry of global economic importance, with new technologies exploiting the novel characteristics of materials manufactured at the nanoscale being developed for use within the biomedical, electronic, energy production and environmental sectors. The unusual properties of engineered nanomaterials (ENMs) that make them useful in such applications have led to concerns regarding their potential impact on the environment. The aquatic environment is particularly at risk of exposure to ENPs, yet, there is currently little known about their behaviour in aquatic syst
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Mgwili, Phelisa Yonela. "Graphenated organic nanoparticles immunosensors for the detection of TB biomarkers." University of the Western Cape, 2017. http://hdl.handle.net/11394/6355.

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Magister Scientiae - MSc (Chemistry)<br>Pulmonary Tuberculosis (TB) a disease second to HIV/AIDS is a global health problem that arises in two states; as an active state and as a latent state. Diagnosis of active TB is tedious and requires expensive procedures since there is no recognizable method for the sole detection of active TB. The current diagnosis consists of chest X-rays and multiple sputum cultures used for acid-fast bacilli detection. The TB diagnosis of children is particularly difficult which further complicates the diagnosis. Thus, rapid identification of this pathogen is importa
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Tshoko, Siphokazi. "Spectroelectrochemical graphene-silver/zinc oxide nanoparticulate phenotype biosensors for ethambutol and pyrazinamide." University of the Western Cape, 2019. http://hdl.handle.net/11394/6842.

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>Magister Scientiae - MSc<br>Tuberculosis (TB), a deadly disease second to HIV/AIDS, is a global health problem. Diagnosis of active tuberculosis is tedious and requires expensive procedures since there is no recognizable method for sole detection of active TB. Although this is a deadly disease, treatment drug toxicity is also an issue that also causes fatalities in diagnosed patients. Therefore, a rapid sensitive and specific diagnostic method is imperative for TB drug management. In this study spectroscopic and/or electrochemical biosensors were developed for the detection and quantifi
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46

Deka, Priyanka. "The Effect of Zinc Oxide Nanoparticles on Plants, and on Host-Pathogen Interactions." Diss., North Dakota State University, 2019. https://hdl.handle.net/10365/29270.

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Zinc oxide nanoparticles (ZnO NPs) are a type of engineered nanomaterial that is currently being explored for use in different aspects of agriculture. So far, research on this area is limited to evaluating the phenotypical responses of plants to a high concentration of the NPs which is realistically not feasible in the actual environment. This research aims to investigate the molecular-level interactions between ZnO NPs and plants, together with another significant component of the environment, a fungal plant pathogen. Prior to studying these molecular-level interactions, the uptake of ZnO NPs
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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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48

Liu, Yang Li Men`gshi. "Study of antimicrobial activity and mechanism of zinc oxide nanoparticles against foodborne pathogens." Diss., Columbia, Mo. : University of Missouri-Columbia, 2009. http://hdl.handle.net/10355/6718.

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The entire thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file; a non-technical public abstract appears in the public.pdf file. Title from PDF of title page (University of Missouri--Columbia, viewed on March 23, 2010). Thesis advisor: Dr. Mengshi Lin. Includes bibliographical references.
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Pokhrel, Lok R., Brajesh Dubey, and Phillip R. Scheuerman. "Potential Developmental Toxicity of Silver and Zinc Oxide Nanoparticles to the Terrestrial Plants." Digital Commons @ East Tennessee State University, 2012. https://dc.etsu.edu/etsu-works/2952.

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Saptarshi, Shruti R. "Nanoparticle-protein corona formation and immunotoxicity of zinc oxide nanoparticles." Thesis, 2015. https://researchonline.jcu.edu.au/43787/1/43787-saptarshi-2015-thesis.pdf.

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Engineered zinc oxide nanoparticles (ZnO-NPs) offer versatility and properties that have a vast array of applications, and are widely used in cosmetics and sunscreens, because of their excellent UV filtering properties and aesthetic appeal. Interestingly, despite high production volumes and a broad application base, there is always a possibility of unintentional side-effects of NPs due to their increased reactivity at the biological level. Bio-reactivity of nanoparticles can be influenced by their physical characteristics such as size, surface coating and propensity to interact with proteins.
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