Relevant bibliographies by topics / Metal Oxides Nanoparticles

Academic literature on the topic 'Metal Oxides Nanoparticles'

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Published: 11 March 2023

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Journal articles on the topic "Metal Oxides Nanoparticles"

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Frolov, Georgiy Aleksandrovich, Irina Aleksandrovna Lundovskikh, Marina Robertovna Shabalina, Mikhail Borisovich Tarasov, Ivan Petrovich Pogorelskiy, Konstantin Igorevich Gurin, and Aleksandr Viktorovich Mironin. "Morphofunctional changes in Bacillus cereus cells under the influence of nanoparticles of metals and metal oxides." Disinfection affairs, no. 4 (December 2020): 5–18. http://dx.doi.org/10.35411/2076-457x-2020-4-5-18.

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The results are presented of the comparative study of the presence of characteristic features of disorders of the microstructural organization of the test strain B. cereus ATCC 10702 cells by stable nanoparticles of silver, gold, platinum, zinc oxide and titanium dioxide with loss of cell viability during their interaction with nanoparticles in an aqueous medium using methods of bacteriology and electron microscopy. General size-dependent features of the effect of nanoparticles on B. cereus ATCC 10702 cells and differences associated with both the adsorption of metal oxide and noble metal nanoparticles on the surface of bacteria and the loss of viability of bacterial cells with different levels of their destruction, reaching 67-70 % in the case of nanoparticles noble metals, were found. The chemistry of the effects of silver, gold, platinum and zinc and titanium oxides nanoparticles on the test microbe B. cereus ATCC 10702 is considered. The assumption is made that the main feature of the interaction of nanodispersed structures based on noble metals and metal oxides is not associated with an increase in the specific contact surface of the dispersed phase, but with a significant increase in the specific surface energy, which leads to the modification of the multilayer hydrated water shells surrounding nanoparticles. The measured zeta (ζ-)-potential of metal and metal oxides nanoparticles characterizes the total effect formed on the diffusion-mobile boundary of the nanoparticle; its value is a quantitative characteristic of the equilibrium energy state of dispersed systems acting as biocatalysts of intracellular enzymes and causing hydrolysis of the polymer structures of cytoplasmic membranes and cell membranes and ultimately the death of microbial cells. The obtained experimental data can be used in creation effective antimicrobial compositions.
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Merah, Abdelali, Abdenabi Abidi, Hana Merad, Noureddine Gherraf, Mostepha Iezid, and Abdelghani Djahoudi. "Comparative Study of the Bacteriological Activity of Zinc Oxide and Copper Oxide Nanoparticles." Acta Scientifica Naturalis 6, no. 1 (March 1, 2019): 63–72. http://dx.doi.org/10.2478/asn-2019-0009.

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Abstract Interest in nanomaterials, especially metal oxides, in the fight against resistant and constantly changing bacterial strains, is more and more expressed. Their very high reactivity, resulting from their large surface area, promoted them to the rank of potential successors of antibiotics. Our work consisted of the synthesis of zinc oxide (ZnO) and copper oxide (CuO) in the nanoparticle state and the study of their bactericidal effect on various Gram-negative and Gram-positive bacterial strains. The nanoparticles of metal oxides have been synthesized by sol-gel method. Qualitative analysis and characterization by UV / Visible and infrared spectrophotometry and X-ray diffraction confirmed that the synthetic products are crystalline. The application of the Scherrer equation allows to determine the size of the two metal oxides, namely: 76.94 nm for ZnO and 24.86 nm for CuO. The bactericidal effect of ZnO and CuO nanoparticles was tested on Gram-positive bacteria (Staphylococcus aureus, Staphylococcus hominis, Staphylococcus haemolyticus, Enterococcus facials) and Gram-negative bacteria (Escherichia coli, Schigella, Klepsiella pneumoniae and Pseudomonas aeruginosa). The results indicate that the tested metal oxides nanoparticles have an effect that varies depending on bacterial species. Indeed, Gram-positive bacteria show greater sensitivity to ZnO nanoparticles whereas Gram-negative bacteria are more sensitive to CuO nanoparticles.
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Ide, E., S. Angata, Akio Hirose, and Kojiro F. Kobayashi. "Bonding of Various Metals Using Ag Metallo-Organic Nanoparticles-A Novel Bonding Process Using Ag Metallo-Organic Nanoparticles-." Materials Science Forum 512 (April 2006): 383–88. http://dx.doi.org/10.4028/www.scientific.net/msf.512.383.

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We propose a novel bonding process using Ag metallo-organic nanoparticles, of which the average particle size is around 11 nm. In this paper, Al, Ti, Ni, Cu, Ag and Au disc joints were made using the Ag metallo-organic nanoparticles in order to investigate the bondability of the various metals. These joints are evaluated based on measurement of the shear strength, and the observation of the fracture surfaces and the cross-sectional microstructures. The shear strength of the various metal joints increased in the following order: Al, Ti, Ni, Cu, Ag and Au. This corresponds to the order of the standard-free energy value of the oxide formation for each metal. In particular, while the strengths of the Cu, Ag and Au joints, in which the oxides can be reduced by carbon, were the same level, those of the Al and Ti joints, of which the oxides were more stable than carbon oxides, were extremely low. This result suggests that the carbon atoms or organic elements generated by the decomposition of the organic shell of the Ag metallo-organic nanoparticles may play a role in deoxidizing the oxide film on the metal surface. This can promote chemical bonding between the Ag nanoparticles and metals at low temperatures.
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Mehtab, Amir, Jahangeer Ahmed, Saad M. Alshehri, Yuanbing Mao, and Tokeer Ahmad. "Rare earth doped metal oxide nanoparticles for photocatalysis: a perspective." Nanotechnology 33, no. 14 (January 12, 2022): 142001. http://dx.doi.org/10.1088/1361-6528/ac43e7.

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Abstract Metal oxides are well-known materials that have been considered as the prominent photocatalysts. Photocatalysis is a promising way to address the environmental issues which are caused by fossil fuel the combustion and industrial pollutants. Lot of efforts such as doping of metal oxides with metals, non-metals have been made to enhance their photocatalytic activity. More specifically, in this review we have discussed detailed synthesis procedures of rare earth doped metal oxides performed in the past decades. The advantage of doping metal oxides with rare earth metals is that they readily combine with functional groups due to the 4f vacant orbitals. Moreover, doping rare earth metals causes absorbance shift to the visible region of the electromagnetic spectrum which results to show prominent photocatalysis in this region. The effect of rare earth doping on different parameters of metal oxides such as band gap and charge carrier recombination rate has been made in great details. In perspective section, we have given a brief description about how researchers can improve the photocatalytic efficiencies of different metal oxides in coming future. The strategies and outcomes outlined in this review are expected to stimulate the search for a whole new set of rare earth doped metal oxides for efficient photocatalytic applications.
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Ali Esmail Al-Snafi, Hussein Ali Hussein Al-Sa'idy, and Hussein Kamil Hamid. "The utilization of plant extracts/biomaterials for the green synthesis of nanoparticles, their biological activity and mode of action." Open Access Research Journal of Biology and Pharmacy 6, no. 1 (September 30, 2022): 017–46. http://dx.doi.org/10.53022/oarjbp.2022.6.1.0063.

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Nanotechnology is one of the modern approaches that has found access to the medicinal as well as pharmaceutical uses where the nanoparticles of the nobel as well as other metals nanoparticles and their oxides have been reported to exploite various biological activities particularly antimicrobial besides antineoplastic activities. In addition, metal/metal oxides nanoparticles have also been proposed to have diagnostic applications in radioscanning of neoplastic diseases besides pharmaceutical application in neoplastic drugs delivery. Green/eco-friendly synthesis of these nanoparticles using biomaterials is considered as an innovatory approach for their production through which attaining economically beneficial along with drastic polluting methods avoidance advantages. In this context, plants extracts are increasingly finding the way for their production. In this survey, the green chemical synthesis approaches of nanoparticals of different metals and their oxides, their medical uses and biological activities, particularly antimicrobial mechanism of silver nanoparticles, as well as antineoplastic activity are discussed. The outcomes of this survey encourage us to conclude the feasibility of investment in the investigations in this approach.
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Oprea, Madalina, and Denis Mihaela Panaitescu. "Nanocellulose Hybrids with Metal Oxides Nanoparticles for Biomedical Applications." Molecules 25, no. 18 (September 4, 2020): 4045. http://dx.doi.org/10.3390/molecules25184045.

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Cellulose is one of the most affordable, sustainable and renewable resources, and has attracted much attention especially in the form of nanocellulose. Bacterial cellulose, cellulose nanocrystals or nanofibers may serve as a polymer support to enhance the effectiveness of metal nanoparticles. The resultant hybrids are valuable materials for biomedical applications due to the novel optical, electronic, magnetic and antibacterial properties. In the present review, the preparation methods, properties and application of nanocellulose hybrids with different metal oxides nanoparticles such as zinc oxide, titanium dioxide, copper oxide, magnesium oxide or magnetite are thoroughly discussed. Nanocellulose-metal oxides antibacterial formulations are preferred to antibiotics due to the lack of microbial resistance, which is the main cause for the antibiotics failure to cure infections. Metal oxide nanoparticles may be separately synthesized and added to nanocellulose (ex situ processes) or they can be synthesized using nanocellulose as a template (in situ processes). In the latter case, the precursor is trapped inside the nanocellulose network and then reduced to the metal oxide. The influence of the synthesis methods and conditions on the thermal and mechanical properties, along with the bactericidal and cytotoxicity responses of nanocellulose-metal oxides hybrids were mainly analyzed in this review. The current status of research in the field and future perspectives were also signaled.
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Daigle, Jean-Christophe, and Jerome P. Claverie. "A Simple Method for Forming Hybrid Core-Shell Nanoparticles Suspended in Water." Journal of Nanomaterials 2008 (2008): 1–8. http://dx.doi.org/10.1155/2008/609184.

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Core-shell hybrid nanoparticles, where the core is an inorganic nanoparticle and the shell an organic polymer, are prepared by a two-step method. Inorganic nanoparticles are first dispersed in water using poly(acrylic acid) (PAA) prepared by reversible addition fragmentation chain transfer (RAFT) polymerization as dispersant. Then, the resulting dispersion is engaged in a radical emulsion polymerization process whereby a hydrophobic organic monomer (styrene and butyl acrylate) is polymerized to form the shell of the hybrid nanoparticle. This method is extremely versatile, allowing the preparation of a variety of nanocomposites with metal oxides (alumina, rutile, anatase, barium titanate, zirconia, copper oxide), metals (Mo, Zn), and even inorganic nitrides (Si3N4).
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Hayashi, Yamato, Masahiro Inoue, Ichitito Narita, Katsuaki Suganuma, and Hirotsugu Takizawa. "Eco-Fabrication of Metal Nanoparticle Related Materials by Home Electric Appliances." Materials Science Forum 620-622 (April 2009): 185–88. http://dx.doi.org/10.4028/www.scientific.net/msf.620-622.185.

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Applications of various noble metal nanoparticles were investigated for newly, ecology and economy home electric appliances (microwave, ultrasonic) used system. Noble metal oxides have merit in metal particles fabrication, as one of these example example, there are decomposed by only heating in air. That is, noble metal oxide don't use strong reduction atmosphere. This reduction is ecologically clean, because many noble metal oxides are not toxic and during decomposition O2 is evolved. We have reduced noble metal oxides by microwave and ultrasound, and tried to fabricate noble metal nanoparticles, and investigated various processing. These energy are widely used by home electric appliances. By choosing suitable process and conditions, it is reasonable to expect that home electric appliances ecology and economy fabrications can be extended to obtain simply various noble metal nanoparticles related materials.
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Thwala, M. M., A. Afantitis, A. G. Papadiamantis, A. Tsoumanis, G. Melagraki, L. N. Dlamini, C. N. M. Ouma, et al. "Using the Isalos platform to develop a (Q)SAR model that predicts metal oxide toxicity utilizing facet-based electronic, image analysis-based, and periodic table derived properties as descriptors." Structural Chemistry 33, no. 2 (December 23, 2021): 527–38. http://dx.doi.org/10.1007/s11224-021-01869-w.

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AbstractEngineered nanoparticles (NPs) are being studied for their potential to harm humans and the environment. Biological activity, toxicity, physicochemical properties, fate, and transport of NPs must all be evaluated and/or predicted. In this work, we explored the influence of metal oxide nanoparticle facets on their toxicity towards bronchial epithelial (BEAS-2B), Murine myeloid (RAW 264.7), and E. coli cell lines. To estimate the toxicity of metal oxide nanoparticles grown to a low facet index, a quantitative structure–activity relationship ((Q)SAR) approach was used. The novel model employs theoretical (density functional theory calculations) and experimental studies (transmission electron microscopy images from which several particle descriptors are extracted and toxicity data extracted from the literature) to investigate the properties of faceted metal oxides, which are then utilized to construct a toxicity model. The classification mode of the k-nearest neighbour algorithm (EnaloskNN, Enalos Chem/Nanoinformatics) was used to create the presented model for metal oxide cytotoxicity. Four descriptors were identified as significant: core size, chemical potential, enthalpy of formation, and electronegativity count of metal oxides. The relationship between these descriptors and metal oxide facets is discussed to provide insights into the relative toxicities of the nanoparticle. The model and the underpinning dataset are freely available on the NanoSolveIT project cloud platform and the NanoPharos database, respectively.
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Kim, Gil Pyo, Seung Bum Yoon, Young Soo Jung, Jae Hoon Ahn, Sung Hyeon Baeck, Alan Kleiman-Schwarsctein, and Eric W. Mc Farland. "Fabrication of Nanoparticles Supported on Metal Oxides by PS-PVP Block Copolymer Encapsulation Method." Solid State Phenomena 119 (January 2007): 17–20. http://dx.doi.org/10.4028/www.scientific.net/ssp.119.17.

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Nanoparticles (Au, Pt, Ru) supported on metal oxides (TiO2, Heteropoly Acid) were prepared by PS-PVP block copolymer encapsulation method. It was confirmed by XPS analysis that the oxidation state of metal is 0 after calcination, which indicates the complete removal of polymer. Synthesized catalysts were characterized by TEM, SEM-EDS, and UV-VIS spectroscopy and it was observed that synthesis and calcination conditions, and the interaction between nanoparticle and metal oxide affected significantly the particle size of metal on the surface of metal oxide. When two different metal precursors were diffused into the core of inversed micelles, nano alloy could be synthesized and the composition of nano alloy was controlled by varying the ratio between the two metal precursors.
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Dissertations / Theses on the topic "Metal Oxides Nanoparticles"

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Magnone, Heidi J. "Synthesis and characterization of metal oxide nanoparticles." Morgantown, W. Va. : [West Virginia University Libraries], 2000. http://etd.wvu.edu/templates/showETD.cfm?recnum=1762.

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Thesis (M.S.)--West Virginia University, 2000.
Title from document title page. Document formatted into pages; contains vi, 38 p. : ill. Vita. Includes abstract. Includes bibliographical references (p. 35-37).
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Xu, Chunbao. "Continuous and batch hydrothermal synthesis of metal oxide nanoparticles and metal oxide-activated carbon nanocomposites." Diss., Available online, Georgia Institute of Technology, 2006, 2006. http://etd.gatech.edu/theses/available/etd-07302006-231517/.

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Thesis (Ph. D.)--Chemical and Biomolecular Engineering, Georgia Institute of Technology, 2007.
Teja, Amyn, Committee Chair ; Kohl, Paul, Committee Member ; Liu, Meilin, Committee Member ; Nair,Sankar, Committee Member ; Rousseau, Ronald, Committee Member.
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Buha, Jelena. "Nonaqueous syntheses of metal oxide and metal nitride nanoparticles." Phd thesis, Universität Potsdam, 2008. http://opus.kobv.de/ubp/volltexte/2008/1836/.

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Nanostructured materials are materials consisting of nanoparticulate building blocks on the scale of nanometers (i.e. 10-9 m). Composition, crystallinity and morphology can enhance or even induce new properties of the materials, which are desirable for todays and future technological applications. In this work, we have shown new strategies to synthesise metal oxide and metal nitride nanomaterials. The first part of the work deals with the study of nonaqueous synthesis of metal oxide nanoparticles. We succeeded in the synthesis of In2O3 nanopartcles where we could clearly influence the morphology by varying the type of the precursors and the solvents; of ZnO mesocrystals by using acetonitrile as a solvent; of transition metal oxides (Nb2O5, Ta2O5 and HfO2) that are particularly hard to obtain on the nanoscale and other technologically important materials. Solvothermal synthesis however is not restricted to formation of oxide materials only. In the second part we show examples of nonaqueous, solvothermal reactions of metal nitrides, but the main focus lies on the investigation of the influence of different morphologies of metal oxide precursors on the formation of the metal nitride nanoparticles. In spite of various reports, the number and variety of nanocrystalline metal nitrides is marginally small by comparison to metal oxides; hence preformed metal oxides as precursors for the preparation of metal nitrides are a logical choice. By reacting oxide nanoparticles with cyanamide, urea or melamine, at temperatures of 800 to 900 °C under nitrogen flow metal nitrides could be obtained. We studied in detail the influence of the starting material and realized that size, crystallinity, type of nitrogen source and temperature play the most important role. We have managed to propose and verify a dissolution-recrystallisation model as the formation mechanism. Furthermore we could show that the initial morphology of the oxides could be retained when ammonia flow was used instead.
Nanostrukturierte Materialien sind Materialien, die aus nanopartikulären Baueinheiten in der Größenordnung von Nanonmetern (d.h. 10-9 m) bestehen. Zusammensetzung, Kristallinität und Morphologie können die natürlichen Eigenschaften dieser Materialien verbessern oder zusätzliche Eigenschaften erzeugen, die für heutige und zukünftige Anwendungen und Verfahren wünschenswert sind. In dieser Arbeit präsentieren wir neue Strategien zur Synthese von Nanopartikeln der Metaloxide und Metalnitride. Im einführenden Teil wird die nichtwässrige Synthese von Metaloxidnanopartikeln beschrieben. Uns gelang die Darstellung von In2O3 Nanopartikeln, deren Größe und Form wir durch die Wahl des Prekursors und des Lösemittels deutlich beeinflussen konnten; von ZnO Mesokristallen durch den Einsatz von Acetonitril als Lösemittel; von Übergangsmetalloxiden (Nb2O5, Ta2O5 and HfO2), die besonders schwer im Nanomaßstab zu erhalten sind und von anderen, technisch relevanten Materialien. Die Möglichkeiten der solvothermalen Synthese sind nicht mit der Darstellung von Oxidmaterialen erschöpft. Im zweiten Teil zeigen wir einige Beispiele nichtwässriger, solvothermaler Synthese von Metalnitriden auf; das Hauptaugenmerk liegt aber auf einer Betrachtung der Einflüsse der Morphologie von Metaloxidnanopartikelprekursoren auf die Bildung der Metalnitridnanopartikel. Die Anzahl und Vielfalt bekannter nanokristalliner Metalnitride ist verschwindend klein im Vergleich zu den Metaloxiden, die in der Fachliteratur etabliert sind und demzufolge einen reichen Baukasten an Prekursoren zur Darstellung von Metalnitriden liefern. Durch die Reaktion von Metaloxidnanopartikeln mit Cyanamid, Urea oder Melamine bei Temperaturen von 800 bis 900 °C unter Stickstofffluss konnten Metalnitride erhalten werden. Eine detaillierte Studie der Reaktionsbedingungen und des Reaktionsablaufs zeigte auf, dass Größe und Kristallinität der Metaloxide, die Art der Stickstoffquelle und die Temperatur die entscheidenden Faktoren sind und legte eine Auflösungs-Rekristallisation als Modelmechanismus dieser Art Reaktion nahe. Darüber hinaus konnte gezeigt worden, dass die anfängliche Morphologie des Oxids unter einem Ammoniafluss beibehalten werden konnte.
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Worden, Matthew. "Aqueous syntheses of transition metal oxide nanoparticles for bioapplications." Kent State University / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=kent1440585507.

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Li, Zhen. "The Transport and Fate of Metal and Metal Oxides Nanoparticles under Different Environmental Conditions." University of Cincinnati / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1427963167.

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Taujale, Saru. "INTERACTIONS BETWEEN METAL OXIDES AND/OR NATURAL ORGANIC MATTER AND THEIR INFLUENCE ON THE OXIDATIVE REACTIVITY OF MANGANESE DIOXIDE." Diss., Temple University Libraries, 2015. http://cdm16002.contentdm.oclc.org/cdm/ref/collection/p245801coll10/id/347169.

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Civil Engineering
Ph.D.
Mn oxides have high redox potentials and are known to be very reactive, rendering many contaminants susceptible to degradation via oxidation. Although Mn oxides typically occur as mixtures with other metal oxides (e.g., Fe, Al, and Si oxides) and natural organic matter (NOM) in soils and aquatic environments, most studies to date have studied the reactivity of Mn oxides as a single oxide system. This study, for the first time, examined the effect of representative metal oxides (Al2O3, SiO2, TiO2, and Fe oxides) and NOM or NOM-model compounds (Aldrich humic acid (AHA), Leonardite humic acid (LHA), pyromellitic acid (PA) and alginate) on the oxidative reactivity of MnO2, as quantified by the oxidation kinetics of triclosan (a widely used phenolic antibacterial agent) as a probe compound. The study also examined the effect of soluble metal ions released from the oxide surfaces on MnO2 reactivity. In binary oxide mixtures, Al2O3 decreased the reactivity of MnO2 as a result of both heteroaggregation and complexation of soluble Al ions with MnO2. At pH 5, the surface charge of MnO2 is negative while that of Al2O3 is positive resulting in intensive heteroaggregation between the two oxides. Up to 3.15 mM of soluble Al ions were detected in the supernatant of 10 g/L of Al2O3 at pH 5.0 whereas the soluble Al concentration was 0.76 mM in the mixed Al2O3 + MnO2 system at the same pH. The lower amount of soluble Al in the latter system is the result of Al ion adsorption by MnO2. The experiments with the addition of 0.001 to 0.1 mM Al3+ to MnO2 suspension indicated the triclosan oxidation rate constant decreased from 0.24 to 0.03 h-1 due to surface complexation. Fe oxides which are also negatively charged at pH 5 inhibited the reactivity of MnO2 through heteroaggregation. The concentration of soluble Fe(III) ions ( 4 mg-TOC/L or [alginate/PA] > 10 mg/L, a lower extent of heteroaggregation was also observed due to the negatively charged surfaces for all oxides. Similar effects on aggregation and MnO2 reactivity as discussed above were observed for ternary MnO2‒Al2O3‒NOM systems. HAs, particularly at high concentrations (2.0 to 12.5 mg-C/L), alleviated the effect of soluble Al ions on MnO2 reactivity as a result of the formation of soluble Al-HA complexes. Alginate and PA, however, did not form soluble complexes with Al ions so they did not affect the effect of Al ions on MnO2 reactivity. Despite the above observations, the amount of Al ions dissolved in MnO2+Al2O3+NOM mixtures was too low, as a result of NOMs adsorption on the surface to passivate oxide dissolution, to have a major impact on MnO2 reactivity. In conclusion, this study provided, for the first time, a systematical understanding of the redox activity of MnO2 in complex model systems. With this new knowledge, the gap between single oxide systems and complex environmental systems is much narrower so that it is possible to have a more accurate prediction of the fate of contaminants in the environment.
Temple University--Theses
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Haggstrom, Johanna A. "Synthesis, characterization, biocidal and virucidal properties of metal oxide nanoparticles." Diss., Kansas State University, 2007. http://hdl.handle.net/2097/1236.

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Doctor of Philosophy
Department of Chemistry
Kenneth J. Klabunde
Non-polar halogens (Cl2, Br2 and I2) and polar interhalogen molecules (ICl, IBr and ICl3) have been adsorbed on the surface of several high surface area materials, including three different nanosized metal oxides (NanoActive® (NA) Al2O3 Plus, NA-TiO2 and NA-CeO2). The prepared halogen and interhalogen adducts have been characterized in detail by thermogravimetric analysis (TGA), UV-Vis, Raman and X-ray photoelectron spectroscopies (XPS) and the results are discussed herein. The different metal oxides lead to varying strength of adsorption of the halogen/interhalogen in the prepared adducts and adsorption is stronger in the nanosized metal oxides as compared to their macrocrystalline available counterparts. Nanosized metal oxide halogen adducts possess high surface reactivities due to their unique surface morphologies. These adducts have been used as reactive materials against vegetative cells, such as Escherichia coli and Bacillus megaterium, as well as spores, including Bacillus subtilis and Bacillus anthracis (Δ Sterne strain). High biocidal activities against both Gram-positive and Gram-negative bacteria, as well as spores have been obtained. Bactericidal test procedures include a water suspension method and a dry membrane method and the results illustrate that good results are obtained using both procedures. Transmission electron micrographs have been used to illustrate the treated and untreated cells and spores, giving insight into the mechanism. It is proposed that the abrasive character of the particles, along with the oxidative power of the halogens/interhalogens as well as the electrostatic attraction between some of the metal oxides and the biological material are main reasons for the high biocidal activities. Three different bacteriophages (MS2, φX174 and PRD1) have also been studied and initial results indicate that there is big potential for the use of metal oxide halogen and interhalogen adducts for the destruction of viruses. Other potential uses for them also include halogenating agents in organic and inorganic synthesis as well as a safe way to store intact halogens.
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Ba, Jianhua. "Nonaqueous synthesis of metal oxide nanoparticles and their assembly into mesoporous materials." Phd thesis, [S.l.] : [s.n.], 2006. http://deposit.ddb.de/cgi-bin/dokserv?idn=982245963.

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Karna, Sanjay K. "Enhancement of Light Emission from Metal Nanoparticles Embedded Graphene Oxide." Thesis, University of North Texas, 2016. https://digital.library.unt.edu/ark:/67531/metadc849637/.

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A fully oxidized state of graphene behaves as a pure insulating while a pristine graphene behaves as a pure conducting. The in-between oxide state in graphene which is the controlled state of oxide behaves as a semiconducting. This is the key condition for tuning optical band gap for the better light emitting property. The controlling method of oxide in graphene structure is known as reduction which is the mixed state of sp2 and sp3 hybrid state in graphene structure. sp2 hybridized domains correspond to pure carbon-carbon bond i.e. pristine graphene while sp3 hybridized domains correspond to the oxide bond with carbon i.e. defect in graphene structure. This is the uniqueness of the graphene-base material. Graphene is a gapless material i.e. having no bandgap energy and this property prevents it from switching device applications and also from the optoelectronic devices applications. The main challenge for this material is to tune as a semiconducting which can open the optical characteristics and emit light of desired color. There may be several possibilities for the modification of graphene-base material that can tune a band gap. One way is to find semiconducting property by doping the defects into pristine graphene structure. Other way is oxides functional groups in graphene structure behaves as defects. The physical properties of graphene depend on the amount of oxides present in graphene structure. So if there are more oxides in graphene structure then this material behaves as a insulating. By any means if it can be reduced then oxides amount to achieve specific proportion of sp2 and sp3 that can emit light of desired color. Further, after achieving light emission from graphene base material, there is more possibility for the study of non-linear optical property. In this work, plasmonic effect in graphene oxide has been focused. Mainly there are two kinds of plasmon effects have been studied, one is long range (surface) and short range (localized) plasmon. For long range plasmon gold thin film was deposited on partially reduced graphene oxide and for short range plasmon silver nanoparticles have used. Results show that there are 10-fold enhancement in light emission from partial graphene oxide coated with gold thin film while 4-fold enhancement from reduced graphene oxide solution with silver nanoparticles. Chemical method and photocatalytic method have been employed for the reduction of graphene oxide for the study of surface plasmon and localized plasmon. For the characterization UV-Vis spectrometer for absorption, spectrofluorophotometer for fluorescent emission, Raman spectrometer for material characterization, photoluminescence and time resolved photoluminescence have been utilized. Silver and gold nanoparticles are spherical of average size of 80 nm and 40 nm have been used as plasmons.
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Escorihuela, Martí Laura. "Computational characterisation of metal oxide nanoparticles for hazard screening and risk assessment." Doctoral thesis, Universitat Rovira i Virgili, 2019. http://hdl.handle.net/10803/669615.

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Donades les propietats intrínseques de les nanopartícules els d’òxids metàl·lics ( MeO) NPs són el pilar fonamental de aplicacions avançades tecnològicament en àrees com electrònica, farmàcia o medicina. En canvi, existeix un important buit pel que fa com influencien les seves propietats físico químiques i el risc que suposen per la salut humana. L’avaluació de la toxicitat dels nanomaterials es una dura tasca que involucra múltiples condicions experimentals. Els mètodes computacionals, in-silico, teòrics i estadístics, avaluen, determinen i prediuen processos o fins i tot propietats de les substàncies. Apart, de la urgència que existeix legislativa per avaluar el risc que comporten, existeix un buit en la literatura, donat que els diferents experiments que si expliquen tenen buits en la descripció de la metodologia emprada o detalls experimentals, llavors no es útil per la avaluació del risc. El mètode més popular computacional, és Desnity Functional theory (DFT) , basat en en la mecànica quàntica . En aquesta tesi es desenvolupa un estricte estudi dels millors mètodes que permeten optimitzar des de la energia de l’estat fonamental per superfícies, nanotubs i nanopartícules esfèriques. Per obtenir valors més precisos per la determinació del band gap, s’ha incrementat el nivell de teoria utilitzant el DFT+U, finalment per obtenir valors per sistemes de 3000 àtoms per la simulació de sistemes biològics , s’ha implementat el mètode DFTB de dinámica molecular, també utilitzat per la avaluació de la solubilitat. Els resultats computacionals obtinguts per ZnO han estat prometedors, llavors s’ha provat per al TiO2, demostrant que la metodologia ideada funciona. Finalment, les dades obtingudes s’han utilitzat per crear model de predicció de propietats band gap i solubilitat per NPs més grans i amb aquestes poder generar model nano-QSAR( Quantitat-eStructura-Acivitat-Relació), on es relacionen les propietats estudiades amb el nivell de toxicitat del MeO NP.
Las propiedades intrínsecas de las nanopartículas de óxidos metálicos (MEO) NPs son el pilar fundamental de aplicaciones avanzadas tecnológicamente en áreas como electrónica, farmacia o medicina. En cambio, existe un importante vacío en cuanto cómo influyen sus propiedades físico-químicas y el riesgo que suponen para la salud humana, la evaluación de la toxicidad de los nanomateriales es un dura tarea que involucra múltiples condiciones experimentales. Los métodos computacionales, in-silico, teóricos y estadísticos, evalúan, determinan y predicen procesos o incluso propiedades de las sustancias. Además de la urgencia que existe legislativa para evaluar el riesgo que conllevan, existe un vacío en la literatura, dado que en los diferentes experimentos que se explican en la literatura tienen vacíos en la explicación de la metodología empleada o detalles experimentales, entonces no son útiles para la evaluación del riesgo. El método más popular computacional, es Density Functional theory (DFT), basado en la mecánica cuántica. En esta tesis se desarrolla un estricto estudio de los mejores métodos que permiten optimizar desde la energía del estado fundamental para superficies, nanotubos y nanopartículas esféricas. Para obtener valores más precisos para la determinación del band gap, se ha incrementado el nivel de teoría utilizando el DFT + U, finalmente para obtener valores para sistemas de 3000 átomos para la simulación de sistemas biológicos, se ha implementado el método DFTB de dinámica molecular, también utilizado para la evaluación de la solubilidad. Los resultados computacionales obtenidos por ZnO han sido prometedores, entonces se ha probado para el TiO2, demostrando la validez de la metodología ideada. Finalmente, los datos obtenidos se han utilizado para crear modelos de predicción de propiedades (band gap y solubilidad) para NPs más grandes y con estas poder generar modelo nano-QSAR ( Cantidad-eStructura-Acividad-Relación), donde se relacionan estas propiedades estudiadas con el nivel de toxicidad del MeO NP.
Given the intrinsic properties, metal oxide nanoparticles (MeO) NPs are the cornerstone of a wide range of technologically advanced applications in areas such as electronics, pharmacy or medicine. However, there is still an important knowledge gap regarding how size influences their physicochemical properties and the risk to human health. Toxicity assessment of NMs is a daunting task involving multiple testing conditions. Computed based methods, in silico methods, based on theoretical and statistical domain, evaluate, determine and predict processes or even substance properties. Furthermore, the legislation urgency for risk assessment exits given that the data for the environmental risk assessment found in literature is uncertain and present knowledge gaps, though is not useful for the risk assessment for nanoparticles. The most popular in silico method based on quantum mechanics for chemistry is Density Functional Theory (DFT). In this thesis we performed a strict and deep study of best methods to evaluate the band gap and the solubility of MeO NP. The use of periodical-DFT methods has allowed us to optimise the ground state energy for surfaces, nanotubes and spherical nanoparticles. To get more reliability for band gap determination, the exchange-correlation functional has been improved to DFT+U. After that, to reach to large systems up to 3000 atoms in order to simulate more realistic biological systems, we used DFTB methodology for band gap prediction; we also coupled DFTB with Molecular Dynamics to compute NP solubility. The computational results obtained with the methodology developed in this thesis for the ZnO case have been promising and, in order to make more robust the method employed, it has been tested for TiO2 too, showing an excellent efficiency in the results. Finally, the data obtained from the prediction models of band gap and solubility models have been used to create nano-QSAR (Quantity-Structure-Activity-Relationship) models.
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Books on the topic "Metal Oxides Nanoparticles"

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Nicola, Pinna, ed. Metal oxide nanoparticles in organic solvents: Synthesis, formation, assembly and application. Heidelberg: Springer, 2009.

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Niederberger, Markus, and Nicola Pinna. Metal Oxide Nanoparticles in Organic Solvents. London: Springer London, 2009. http://dx.doi.org/10.1007/978-1-84882-671-7.

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Roca, Alejandro G., Paolo Mele, Hanae Kijima-Aoki, Elvira Fantechi, Jana K. Vejpravova, Martin Kalbac, Satoru Kaneko, and Tamio Endo, eds. Surfaces and Interfaces of Metal Oxide Thin Films, Multilayers, Nanoparticles and Nano-composites. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-74073-3.

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Noble Metal-Metal Oxide Hybrid Nanoparticles: Fundamentals and Applications. Woodhead Publishing, 2018.

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Mohapatra, Satyabrata, Tuán Anh Nguyen, and Phuong Nguyen-Tri. Noble Metal-Metal Oxide Hybrid Nanoparticles: Fundamentals and Applications. Elsevier, 2018.

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Jolivet, Jean-Pierre. Metal Oxide Nanostructures Chemistry. Oxford University Press, 2019. http://dx.doi.org/10.1093/oso/9780190928117.001.0001.

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This much-anticipated new edition of Jolivet's work builds on the edition published in 2000. It is entirely updated, restructured and increased in content. The book focuses on the formation by techniques of green chemistry of oxide nanoparticles having a technological interest. Jolivet introduces the most recent concepts and modelings such as dynamics of particle growth, ordered aggregation, ionic and electronic interfacial transfers. A general view of the metal hydroxides, oxy-hydroxides and oxides through the periodic table is given, highlighting the influence of the synthesis conditions on crystalline structure, size and morphology of nanoparticles. The formation of aluminum, iron, titanium, manganese and zirconium oxides are specifically studied. These nanomaterials have a special interest in many technological fields such as ceramic powders, catalysis and photocatalysis, colored pigments, polymers, cosmetics and also in some biological or environmental phenomena.
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Nanostructured Oxides. Wiley-VCH Verlag GmbH, 2009.

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Pawade, Vijay B., Paresh H. Salame, and Bharat Apparao Bhanvase. Multifunctional Nanostructured Metal Oxides for Energy Harvesting and Storage Devices. Taylor & Francis Group, 2020.

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Pawade, Vijay B., Paresh H. Salame, and Bharat Apparao Bhanvase. Multifunctional Nanostructured Metal Oxides for Energy Harvesting and Storage Devices. Taylor & Francis Group, 2020.

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Pawade, Vijay B., Paresh H. Salame, and Bharat Apparao Bhanvase. Multifunctional Nanostructured Metal Oxides for Energy Harvesting and Storage Devices. Taylor & Francis Group, 2020.

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Book chapters on the topic "Metal Oxides Nanoparticles"

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Sauvage, Frédéric, Mohammad K. Nazeeruddin, and Michael Grätzel. "Metal-Oxide Nanoparticles for Dye-Sensitized Solar Cells." In Functional Metal Oxides, 339–83. Weinheim, Germany: Wiley-VCH Verlag GmbH & Co. KGaA, 2013. http://dx.doi.org/10.1002/9783527654864.ch13.

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Mousdis, G. A., M. Kompitsas, D. Tsamakis, M. Stamataki, G. Petropoulou, and P. Koralli. "Resistivity Sensors of Metal Oxides with Metal Nanoparticles as Catalysts." In Nanomaterials for Security, 187–99. Dordrecht: Springer Netherlands, 2016. http://dx.doi.org/10.1007/978-94-017-7593-9_15.

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Manav, Navneet, Vatsala Dwivedi, and A. K. Bhagi. "Degradation of DDT, a Pesticide by Mixed Metal Oxides Nanoparticles." In Green Chemistry in Environmental Sustainability and Chemical Education, 93–99. Singapore: Springer Singapore, 2018. http://dx.doi.org/10.1007/978-981-10-8390-7_9.

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van Genuchten, Case M. "A Review of the Structure and Metal(loid) Adsorption Reactivity of Nanoscale Fe(III) and Mn(IV) (Oxyhydr)oxides for Industrial Application." In Industrial Applications of Nanoparticles, 196–216. Boca Raton: CRC Press, 2023. http://dx.doi.org/10.1201/9781003183525-12.

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Dragieva, Iovka. "Magnetic Metal Nanoparticles - Synthesis, Properties, Applications in Magnetic Hard Disks and Some of Their Quantum Size Effects." In Nano-Crystalline and Thin Film Magnetic Oxides, 165–76. Dordrecht: Springer Netherlands, 1999. http://dx.doi.org/10.1007/978-94-011-4493-3_12.

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Kim, Gil Pyo, Seung Bum Yoon, Young Soo Jung, Jae Hoon Ahn, Sung Hyeon Baeck, Alan Kleiman-Schwarsctein, and Eric W. Mc Farland. "Fabrication of Nanoparticles Supported on Metal Oxides by PS-PVP Block Copolymer Encapsulation Method." In Solid State Phenomena, 17–20. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/3-908451-27-2.17.

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Kurochkin, Ilya, Maria Gromova, Ekaterina Dontsova, Larisa Sigolaeva, Arkadiy Eremenko, Evgeniy Evtushenko, Igor Budashov, et al. "Biosensing Systems Based on Metal Oxides Nanoparticles and Choline Oxidase for Environmental and Biomedical Monitoring of Neurotoxicants." In Portable Chemical Sensors, 151–69. Dordrecht: Springer Netherlands, 2012. http://dx.doi.org/10.1007/978-94-007-2872-1_8.

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Steunou, Nathalie. "Interfacing Gelatin with (Hydr)oxides and Metal Nanoparticles: Design of Advanced Hybrid Materials for Biomedical Engineering Applications." In Advanced Materials Interfaces, 275–324. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2016. http://dx.doi.org/10.1002/9781119242604.ch8.

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Chadwick, Alan V., and Shelly L. P. Savin. "Metal Oxide Nanoparticles." In Low-Dimensional Solids, 1–76. Chichester, UK: John Wiley & Sons, Ltd, 2010. http://dx.doi.org/10.1002/9780470661406.ch1.

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Kuo, Chung-Hao, David A. Kriz, Anton Gudz, and Steven L. Suib. "Biosynthesis of Size-Controlled Metal and Metal Oxide Nanoparticles by Bacteria." In Bio-Nanoparticles, 123–40. Hoboken, NJ: John Wiley & Sons, Inc, 2015. http://dx.doi.org/10.1002/9781118677629.ch6.

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Conference papers on the topic "Metal Oxides Nanoparticles"

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Zheng, Yuangang, Gary Holtom, and Steven D. Colson. "Multichannel multiphoton imaging of metal oxides nanoparticles in biological system." In Biomedical Optics 2004, edited by Ammasi Periasamy and Peter T. C. So. SPIE, 2004. http://dx.doi.org/10.1117/12.528337.

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Soares, Jason W., Diane M. Steeves, Jagdeep Singh, Jisun Im, and James E. Whitten. "Thiol adsorption on metal oxides: an approach for selective deposition on zinc oxide nanoparticles." In SPIE OPTO, edited by Ferechteh H. Teherani, David C. Look, and David J. Rogers. SPIE, 2011. http://dx.doi.org/10.1117/12.875393.

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Hendraningrat, Luky, and Ole Torsaeter. "Unlocking the Potential of Metal Oxides Nanoparticles to Enhance the Oil Recovery." In Offshore Technology Conference-Asia. Offshore Technology Conference, 2014. http://dx.doi.org/10.4043/24696-ms.

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Hendraningrat, Luky, and Ole Torsaeter. "Unlocking the Potential of Metal Oxides Nanoparticles to Enhance the Oil Recovery." In Offshore Technology Conference-Asia. Offshore Technology Conference, 2014. http://dx.doi.org/10.2118/24696-ms.

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Ricci, Pier Carlo, C. M. Carbonaro, R. Corpino, D. Chiriu, and L. Stagi. "Surface effects and phase stability in metal oxides nanoparticles under visible irradiation." In FUNDAMENTALS AND APPLICATIONS IN SILICA AND ADVANCED DIELECTRICS (SIO2014): X International Symposium on SiO2, Advanced Dielectrics and Related Devices. AIP Publishing LLC, 2014. http://dx.doi.org/10.1063/1.4900464.

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Nalimova, Svetlana, Anton Bobkov, Alexander Maximov, and Vyacheslav Moshnikov. "Synthesis and study of metal oxides modified by Ag nanoparticles for gas sensors." In PROCEEDINGS OF INTERNATIONAL CONFERENCE ON RECENT TRENDS IN MECHANICAL AND MATERIALS ENGINEERING: ICRTMME 2019. AIP Publishing, 2020. http://dx.doi.org/10.1063/5.0018053.

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Afzal, Adeel, Antonio Monopoli, Cinzia Di Franco, Nicoletta Ditaranto, Bruno Mariano, Nicola Cioffi, Angelo Nacci, Gaetano Scamarcio, and Luisa Torsi. "Core-shell gold nanoparticles and gold-decorated metal oxides for gas sensing applications." In 2011 4th IEEE International Workshop on Advances in Sensors and Interfaces (IWASI). IEEE, 2011. http://dx.doi.org/10.1109/iwasi.2011.6004701.

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Hsieh, Chien-Te, Kuen-Song Lin, Shih Hung Chan, and Ay Su. "Fabrication of Composite Carbon Nanotubes With Different Oxidation Levels by a Self-Assembly Surface Modification." In ASME 2006 4th International Conference on Fuel Cell Science, Engineering and Technology. ASMEDC, 2006. http://dx.doi.org/10.1115/fuelcell2006-97174.

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An efficient technique to fabricate metal-oxide/carbon composite nanotubes has been developed through a self-assembly processing that includes implantation of acidic groups and interaction between surface oxides and metal ions or hydration molecules. To functionalize carbon nanotubes, gaseous oxidation at 300 °C was firstly employed to build functional oxygen groups including carboxyl, carbonyl and hydroxyl group, on the ends or sidewalls of the nanotubes. It revealed that the oxidized nanotubes express a slight improvement of surface hydrophilicity, which was demonstrated by contact angle measurement. X-ray photoelectron spectroscope investigation indicated that the ratio of attached metal-oxide onto the oxidized nanotubes gradually increases with oxidation level, i.e., surface O/C atomic ratio. This evidence reflected that the surface oxides act as an adsorption center that strongly interacts with metal ions or hydration molecules in aqueous phase. Applying this method, SnO2, RuO2, NiO and PtRu nanoparticles having an average size of 5 nm were assembled on the oxidized carbon nanotubes.
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Soliman, Haytham, Jonathan Phillips, Claudia Luhrs, Hugo Zea, and Zayd C. Leseman. "Aerosol Synthesis of Nano and Micro-Scale Zero Valent Nickel Particles From Oxide Precursors." In ASME 2010 International Mechanical Engineering Congress and Exposition. ASMEDC, 2010. http://dx.doi.org/10.1115/imece2010-39075.

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In this work a novel aerosol method, derived from the batch Reduction/Expansion Synthesis (RES) method, for production of nano / micro-scale metal particles from oxides and hydroxides is presented. In the Aersosol-RES (A-RES) method, an aerosol, consisting of a physical mixture of urea and metal oxide or hydroxides, is passed through a heated oven (1000 °C) with a residence time of the order of 1 second, producing pure (zero valent) metal particles. It appears that the process is flexible regarding metal or alloy identity, allows control of particle size and can be readily scaled to very large throughput. Current work is focused on creating nanoparticles of metal and metal alloy using this method. Although this is primarily a report on observations, some key elements of the chemistry are clear. In particular, the reducing species produced by urea decomposition are the primary agents responsible for reduction of oxides and hydroxides to metal. It is also likely that the rapid expansion that takes place when solid/liquid urea decomposes to form gas species influences the final morphology of the particles.
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Evstropiev, S. K., I. V. Bagrov, A. N. Baranov, I. M. Belousova, K. V. Dukelskii, A. V. Karavaeva, V. M. Kiselev, and N. V. Nikonorov. "Comparative study of the photocatalytic and bactericidal properties of coatings based on metal oxides nanoparticles." In 2020 International Conference Laser Optics (ICLO). IEEE, 2020. http://dx.doi.org/10.1109/iclo48556.2020.9285672.

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Reports on the topic "Metal Oxides Nanoparticles"

1

Chefetz, Benny, Baoshan Xing, Leor Eshed-Williams, Tamara Polubesova, and Jason Unrine. DOM affected behavior of manufactured nanoparticles in soil-plant system. United States Department of Agriculture, January 2016. http://dx.doi.org/10.32747/2016.7604286.bard.

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The overall goal of this project was to elucidate the role of dissolved organic matter (DOM) in soil retention, bioavailability and plant uptake of silver and cerium oxide NPs. The environmental risks of manufactured nanoparticles (NPs) are attracting increasing attention from both industrial and scientific communities. These NPs have shown to be taken-up, translocated and bio- accumulated in plant edible parts. However, very little is known about the behavior of NPs in soil-plant system as affected by dissolved organic matter (DOM). Thus DOM effect on NPs behavior is critical to assessing the environmental fate and risks related to NP exposure. Carbon-based nanomaterials embedded with metal NPs demonstrate a great potential to serve as catalyst and disinfectors. Hence, synthesis of novel carbon-based nanocomposites and testing them in the environmentally relevant conditions (particularly in the DOM presence) is important for their implementation in water purification. Sorption of DOM on Ag-Ag₂S NPs, CeO₂ NPs and synthesized Ag-Fe₃O₄-carbon nanotubebifunctional composite has been studied. High DOM concentration (50mg/L) decreased the adsorptive and catalytic efficiencies of all synthesized NPs. Recyclable Ag-Fe₃O₄-carbon nanotube composite exhibited excellent catalytic and anti-bacterial action, providing complete reduction of common pollutants and inactivating gram-negative and gram-positive bacteria at environmentally relevant DOM concentrations (5-10 mg/L). Our composite material may be suitable for water purification ranging from natural to the industrial waste effluents. We also examined the role of maize (Zeamays L.)-derived root exudates (a form of DOM) and their components on the aggregation and dissolution of CuONPs in the rhizosphere. Root exudates (RE) significantly inhibited the aggregation of CuONPs regardless of ionic strength and electrolyte type. With RE, the critical coagulation concentration of CuONPs in NaCl shifted from 30 to 125 mM and the value in CaCl₂ shifted from 4 to 20 mM. This inhibition was correlated with molecular weight (MW) of RE fractions. Higher MW fraction (> 10 kDa) reduced the aggregation most. RE also significantly promoted the dissolution of CuONPs and lower MW fraction (< 3 kDa) RE mainly contributed to this process. Also, Cu accumulation in plant root tissues was significantly enhanced by RE. This study provides useful insights into the interactions between RE and CuONPs, which is of significance for the safe use of CuONPs-based antimicrobial products in agricultural production. Wheat root exudates (RE) had high reducing ability to convert Ag+ to nAg under light exposure. Photo-induced reduction of Ag+ to nAg in pristine RE was mainly attributed to the 0-3 kDa fraction. Quantification of the silver species change over time suggested that Cl⁻ played an important role in photoconversion of Ag+ to nAg through the formation and redox cycling of photoreactiveAgCl. Potential electron donors for the photoreduction of Ag+ were identified to be reducing sugars and organic acids of low MW. Meanwhile, the stabilization of the formed particles was controlled by both low (0-3 kDa) and high (>3 kDa) MW molecules. This work provides new information for the formation mechanism of metal nanoparticles mediated by RE, which may further our understanding of the biogeochemical cycling and toxicity of heavy metal ions in agricultural and environmental systems. Copper sulfide nanoparticles (CuSNPs) at 1:1 and 1:4 ratios of Cu and S were synthesized, and their respective antifungal efficacy was evaluated against the pathogenic activity of Gibberellafujikuroi(Bakanae disease) in rice (Oryza sativa). In a 2-d in vitro study, CuS decreased G. fujikuroiColony- Forming Units (CFU) compared to controls. In a greenhouse study, treating with CuSNPs at 50 mg/L at the seed stage significantly decreased disease incidence on rice while the commercial Cu-based pesticide Kocide 3000 had no impact on disease. Foliar-applied CuONPs and CuS (1:1) NPs decreased disease incidence by 30.0 and 32.5%, respectively, which outperformed CuS (1:4) NPs (15%) and Kocide 3000 (12.5%). CuS (1:4) NPs also modulated the shoot salicylic acid (SA) and Jasmonic acid (JA) production to enhance the plant defense mechanisms against G. fujikuroiinfection. These results are useful for improving the delivery efficiency of agrichemicals via nano-enabled strategies while minimizing their environmental impact, and advance our understanding of the defense mechanisms triggered by the NPs presence in plants.
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Musselwhite, Nathan. The Catalysis of Uniform Metal Nanoparticles Deposited onto Oxide Supports: The Components of a Catalyst that Control Activity and Selectivity. Office of Scientific and Technical Information (OSTI), May 2015. http://dx.doi.org/10.2172/1469158.

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Liu, JIFENG. Thermodynamically Stable, Plasmonic Transition Metal Oxide Nanoparticle Solar Selective Absorbers towards 95% Optical-to-Thermal Conversion Efficiency at 750 °C. Office of Scientific and Technical Information (OSTI), June 2021. http://dx.doi.org/10.2172/1890656.

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