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Добірка наукової літератури з теми "NANOSTRUCTURED IRON OXIDE"

Автор: Grafiati
Опубліковано: 11 вересня 2023

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Статті в журналах з теми "NANOSTRUCTURED IRON OXIDE"

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Kesavan, V., D. Dhar, Y. Koltypin, N. Perkas, O. Palchik, A. Gedanken, and S. Chandrasekaran. "Nanostructured amorphous metals, alloys, and metal oxides as new catalysts for oxidation." Pure and Applied Chemistry 73, no. 1 (January 1, 2001): 85–91. http://dx.doi.org/10.1351/pac200173010085.

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The oxidation of cyclohexane with molecular oxygen in the presence of isobutyraldehyde catalyzed by nanostructured iron and cobalt oxides and iron oxide supported on titania has been studied. Nanostructured cobalt oxide on MCM-41 is found to be efficient for catalytic aerobic epoxidation of olefins.
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2

Kerli, Süleyman, and Ali Kemal Soğuksu. "Production of iron oxide and nickel oxide nanostructural particles, investigation of the supercapacitor and photocatalytic properties." Zeitschrift für Kristallographie - Crystalline Materials 234, no. 11-12 (December 18, 2019): 725–31. http://dx.doi.org/10.1515/zkri-2019-0043.

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AbstractIn this study, iron oxide, nickel oxide, and nickel-iron oxide nanostructured particles were produced by the hydrothermal method. X-ray diffraction (XRD) and SEM measurements were performed to investigate the physical properties of these nanostructured particles. According to the XRD results, the crystal properties of these particles were determined. From the SEM images, these particles understood to be nano-structured. The electrodes were examined for electrochemical properties by using these nanostructured particles. Electrochemical measurements of the produced electrodes were performed, and capacitance values and impedance spectra of the electrodes were determined. The specific capacitance values of the iron oxide, nickel-iron oxide, and nickel oxide nanostructured particles, respectively are 30 F/g, 55 F/g, and 67 F/g. Also, the photocatalytic activities of nanostructured particles were investigated. This examination methylene blue (MB) was used and made under a xenon lamp. In light of our findings, it was observed that high photocatalytic degradation rate. Nickel-iron oxide nanostructured particles, the degradation of MB were found to be about 87%.
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Aubekerov, K., K. N. Punegova, R. Sergeenko, A. Kuznetsov, V. M. Kondratev, S. A. Kadinskaya, S. S. Nalimova, and V. A. Moshnikov. "Synthesis and study of gas sensitive ZnFe2O4-modified ZnO nanowires." Journal of Physics: Conference Series 2227, no. 1 (March 1, 2022): 012014. http://dx.doi.org/10.1088/1742-6596/2227/1/012014.

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Abstract Currently, new nanostructured materials based on composite metal oxides is of great interest for the development of gas sensors with improved functional characteristics. In this work, zinc oxide nanowires were synthesized by hydrothermal method. Hierarchical ZnO/ZnFe2O4 nanostructures were obtained by immersion of zinc oxide layers in ferrous sulphate aqueous solution. The mechanism of zinc ferrite formation during the interaction of zinc oxide with iron sulphate is considered. The crystal structure of ZnO and ZnO/ZnFe2O4 were studied by Raman spectroscopy. The sensitivity of ZnO and ZnO/ZnFe2O4 nanostructures to isopropyl alcohol vapors was analyzed. It was shown that there is an optimal concentration of ferrous sulphate used to modify zinc oxide nanowires and synthesize ZnO/ZnFe2O4 composite nanostructures.
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Ye, Zhi Guo, Xian Liang Zhou, Hui Min Meng, Xiao Zhen Hua, Ying Hu Dong, and Ai Hua Zou. "The Electrochemical Characterization of Electrochemically Synthesized MnO2-Based Mixed Oxides for Supercapacitor Applications." Advanced Materials Research 287-290 (July 2011): 1290–98. http://dx.doi.org/10.4028/www.scientific.net/amr.287-290.1290.

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Nanostructured elements, including: manganese-molybdenum (Mn-Mo) oxide, manganese-molybdenum-tungsten (Mn-Mo-W) oxide, manganese-molybdenum-iron (Mn-Mo-Fe) oxide, manganese-molybdenum-cobalt (Mn-Mo-Co) oxide, manganese-vanadium-tungsten (Mn-V-W) oxide, manganese-vanadium-iron (Mn-V-Fe) oxide and manganese-iron (Mn-Fe) oxide, have been anodically deposited onto titanium substrates by employing an iridium dioxide interlayer (Ti/IrO2anode). The electrochemical characteristics of the resultant oxide deposits have been investigated by cyclic voltammetry (CV) in an aqueous 0.1 M Na2SO4solution. The voltammetric behaviors of the oxide deposits observed are significantly influenced by the doped elements. Molybdenum doping is found to be advantageous at improving the capacitance characteristics of anodically deposited manganese oxide. Comparatively, iron and vanadium doping are found to be unfavorable. The structure and crystallinity of these deposits have been identified by X-ray diffraction (XRD). The surface morphologies of these oxides were acquired from field emission scanning electron microscopes (FESEM). The high values of electrical parameters for the doped deposits are attributed to the net-like and sponge-like nanostructure, and low crystallinity of the doped manganese oxides. The deposit of Mn-Mo oxides exhibits an excellent capacitive-like behavior, possessing the maximum specific capacitance of 810 F g-1at a CV scan rate of 5 mV s-1in aqueous 0.1 M Na2SO4solution.
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MODAN, ECATERINA MAGDALENA, CATALIN MARIAN DUCU, CARMEN MIHAELA TOPALA, SORIN GEORGIAN MOGA, DENIS AURELIAN NEGREA, and ADRIANA GABRIELA PLAIASU. "NANOSTRUCTURED IRON OXIDE POWDERS BY MICROWAVE ASSISTED SYNTHESIS." Journal of Science and Arts 21, no. 4 (December 30, 2021): 1081–94. http://dx.doi.org/10.46939/j.sci.arts-21.4-b03.

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A range of nanostructured oxides with excellent properties is used in technology and science for applications in several fields: catalysis, gas detection, biomedical applications. The most studied forms of oxides are hematite, maghemite and magnetite. In this study, microwave-assisted hydrolytic synthesis and microwave-assisted coprecipitation synthesis are described for the preparation of undoped and doped iron oxide powders using iron (III) chloride (FeCl3), potassium chloride (KCl) as precursors and sodium hydroxide (NaOH) solution as a hydrolysis agent. Microwave-assisted hydrolysis was performed at different concentrations of FeCl3 precursor: 0.1 M, 0.4 M, 0.7 M to which a constant concentration of hydrolysis agent was added, and the synthesis to obtain potassium-doped powders consisted of co-precipitation of 0.1M FeCl3 and 0.025M KCl precursor solutions in the presence of 2M NaOH hydrolysis agent. The developed powders were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), and Fourier transform infrared spectroscopy (FTIR). The novelty is the use of potassium as a doping element for iron oxide, for potential application as catalyst. Hematite doped with 5% K was obtained by microwave-assisted coprecipitation synthesis. The presence of K was evidenced by EDS, while XRD spectra indicate successful doping of iron oxide with potassium, either interstitially or by substitution. By microwave synthesis, an increase in particle size was observed with increasing calcination temperature. The formation of the crystalline hematite phase was not obtained in the microwave heating process but following calcination of the powder
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Valero-Navarro, Angel, Jorge F. Fernandez-Sanchez, Antonio Segura-Carretero, Ursula E. Spichiger-Keller, Alberto Fernandez-Gutierrez, Pascual Oña, and Ignacio Fernandez. "Iron-phthalocyanine complexes immobilized in nanostructured metal oxide as optical sensors of NOx and CO: NMR and photophysical studies." Journal of Porphyrins and Phthalocyanines 13, no. 04n05 (April 2009): 616–23. http://dx.doi.org/10.1142/s1088424609000796.

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This paper presents the research that is currently undergoing in our group toward the development of optical sensing layers based on iron(II) phthalocyanine complexes immobilized on nanostructured solid supports. Several FePc - N donor ligands have been prepared and coated into different nanostructured metal oxides. Optical properties, chemical variables, analytical features, selectivity rates, response times and type of nanostructure supports have been evaluated; in some cases, interesting correlations between them have been deduced. In addition, thermostability studies have been carried out, providing access to a second generation of nanostructured metal oxides.
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Ismail, Syahriza, Nur Syafini Saad, and Jeeferie Abd Razak. "Nanostructured Hematite Prepared by Thermal Oxidation of Iron." Key Engineering Materials 694 (May 2016): 208–12. http://dx.doi.org/10.4028/www.scientific.net/kem.694.208.

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This paper reports on the synthesis of iron oxide nanowires using thermal oxidation of iron. The α-Fe2O3 (hematite) and Fe3O4 (magnetite) were successfully formed using this method. The morphological observation was done through the FESEM, while the XRD, EDX and Raman spectroscopy were used to determine the physical and structural properties of the produced nanostructures. It was found that the peaks intensities relative to the hematite, increased with the extent of oxidation period. The growth and final morphology of hematite was significantly controlled by the heating duration. A surface diffusion mechanism for nano-hematite growth was then proposed to account for the growth phenomena of this nanostructured formation.
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Yang, Yuyun, Juncen Zhou, Rainer Detsch, Nicola Taccardi, Svenja Heise, Sannakaisa Virtanen, and Aldo R. Boccaccini. "Biodegradable nanostructures: Degradation process and biocompatibility of iron oxide nanostructured arrays." Materials Science and Engineering: C 85 (April 2018): 203–13. http://dx.doi.org/10.1016/j.msec.2017.12.021.

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Rudenkov, A. S., M. A. Yarmolenko, A. A. Rogachev, A. P. Surzhikov, A. P. Luchnikov, and O. A. Frolova. "Phase composition and morphology of nanostructured coatings deposited by laser dispersion of a mixture of polyethylene with iron oxalate." Bulletin of the Karaganda University. "Physics" Series 99, no. 3 (September 30, 2020): 22–30. http://dx.doi.org/10.31489/2020ph3/22-30.

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Peculiarities of forming of iron oxide coatings with reinforced carbon nanostructures from gas phase generated by laser dispersion of composite target were explored. Influence of technological modes of heat treatment on morphology and phase composition of nanostructured film layers was determined. It was found that on a substrate highly dispersed layers containing carbon nanostructures are formed. Using Raman spectroscopy it was shown that in oxide matrix carbon structures, which are mainly in the form of planar located nanotubes, appear. It was found that with a mass ratio of polyethylene and iron oxalate equal to 1:1, the distribution of the formed nanostructures in size is unimodal with a maximum near 20 nm. At dispersing of polyethylene and iron oxalate mixture with mass ratio 1:2 in deposited layers nanotubes have the least defectiveness. Patterns of influence on morphology and coatings phase composition of relative component abundance in being dispersed by laser radiation composite target were determined. It was shown that with the growing of iron oxalate concentration in the target coating structural heterogeneity increases, subroughness and average size of separate nanostructures in the deposited condensate grow. The obtained polymer matrix nanocomposite films can be used in sensors.
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Kharlamova, M. V., N. A. Sapoletova, A. A. Eliseev, I. P. Suzdalev, Yu V. Maksimov, A. V. Lukashin та Yu D. Tret’yakov. "Optical properties of nanostructured γ iron oxide". Doklady Chemistry 415, № 1 (липень 2007): 176–79. http://dx.doi.org/10.1134/s0012500807070063.

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Дисертації з теми "NANOSTRUCTURED IRON OXIDE"

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Messi, C. "Nanostructured catalytic metal oxides supported over oxide supports of various nature : the iron oxide system." Doctoral thesis, Università degli Studi di Milano, 2008. http://hdl.handle.net/2434/57081.

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Smith, Steven P. "Lanthanide-containing Nanostructured Materials." Diss., The University of Arizona, 2011. http://hdl.handle.net/10150/145459.

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The research described in this Dissertation is concerned generally with the exploration of the potential use of lanthanide elements in nanostructured materials for the purpose of modification of the magnetic and optical properties. This is explored through a focus on the development of lanthanide-containing iron oxide nanosystems. Our objectives of producing lanthanide containing nanostructured materials with potentially useful optical and magnetic applications has been achieved through the development of lanthanide-doped Fe3O4 and -Fe2O3 nanoparticles, as well as a unique core-shell magnetic-upconverting nanoparticle system.Necessary background information on nanomaterials, rationale for the study of lanthanide-containing iron oxide nanosystems and context for discussion of the results obtained in each project is provided in the Introduction Chapter. The syntheses of Fe3O4 nanoparticles doped with Eu(III) and Sm(III) are discussed, along with structural characterization and magnetic property investigation of products In Chapter 2. The following Chapter expands the study of lanthanide doping to -Fe2O3, a closely related yet distinct magnetic nanoparticle system. A completely different synthesis is attempted, and comparisons between the two systems are made.The development of novel synthetic methodologies used to create such products has yielded high-quality lanthanide-containing materials and are evidenced by TEM images displaying nearly monodisperse particles in each of our efforts. The modifications to the magnetic properties resulting from lanthanide doping include theobservation of ferromagnetism in the Fe3O4 system and increased magnetic saturation of -Fe2O3 nanoparticles, and are characterized by VSM and the visual observation of magnetic alignment of products. Our efforts towards developing a novel methodology capable of producing high quality Fe3O4 nanoparticles, and subsequent characterization of products, were published in the Journal of the American Chemical Society.Optically active, magnetic, core-shell nanoparticles are investigated in Chapter 4 for the potential uses in diagnosis and treatment of cancer. This multifunctional system uses Fe3O4 as a magnetic core, shelled by upconverting lanthanide-containing nanomaterials, and is rendered biocompatible through encapsulation of the core-shell structure by a silica shell. Added functionality is achieved through amine functionalization of the silica surface, with the goal of coupling the inorganic nanoparticle with drug targeting groups. TEM results indicate successful formation of the core-shell nanoparticles, and expected magnetic and optical properties are shown by visual observation and luminescence spectroscopy, respectively.
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Liu, Simin. "Photocatalytic hydrogen production with iron oxide under solar irradiation." Thesis, Queensland University of Technology, 2010. https://eprints.qut.edu.au/43666/1/Simin_Liu_Thesis.pdf.

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As solar hydrogen is a sustainable and environmental friendly energy carrier, it is considered to take the place of fossil fuels in the near future. Solar hydrogen can be generated by splitting of water under solar light illumination. In this study, the use of nanostructured hematite thin-film electrodes in photocatalytic water splitting was investigated. Hematite (á-Fe2O3) has a narrow band-gap of 2.2 eV, which is able to utilise approximately 40% of solar radiation. However, poor photoelectrochemical performance is observed for hematite due to low electrical conductivity and a high rate of electron-hole recombination. An extensive review of useful measures taken to overcoming the disadvantages of hematite so as to enhance its performance was presented including thin-film structure, nanostructuring, doping, etc. Since semiconductoring materials which exhibit an inverse opal structure are expected to have a high surface-volume ratio, unique optical characteristics and a shorter distance for photogenerated holes to travel to the electrode/electrolyte interface, inverse opals of hematite thin films deposited on FTO glass substrate were successfully prepared by doctor blading using PMMA as a template. However, due to the poor adhesion of the films, an acidic medium (i.e., 2 M HCl) was employed to significantly enhance the adhesion of the films, which completely destroyed the inverse opal structure. Therefore, undoped, Ti and Zn-doped hematite thin films deposied on FTO glass substrate without an inverse opal structure were prepared by doctor blading and spray pyrolysis and characterised using SEM, EDX, XRD, TGA, UV-Vis spectroscopy and photoelectrochemical measurements. Regarding the doped hematite thin films prepared by doctor blading, the photoelectrochemical activity of the hematite photoelectrodes was improved by incorporation of Ti, most likely owing to the increased electrical conductivity of the films, the stabilisation of oxygen vacancies by Ti4+ ions and the increased electric field of the space charge layer. A highest photoresponse was recorded in case of 2.5 at.% Ti which seemed to be an optimal concentration. The effect of doping content, thickness, and calcination temperature on the performance of the Ti-doped photoelectrodes was investigated. Also, the photoactivity of the 2.5 at.% Ti-doped samples was examined in two different types of electrochemical cells. Zn doping did not enhance the photoactivity of the hematite thin films though Zn seemed to enhance the hole transport due to the slow hole mobility of hematite which could not be overcome by the enhancement. The poor performance was also obtained for the Ti-doped samples prepared by spray pyrolysis, which appeared to be a result of introduction of impurities from the metallic parts of the spray gun in an acidic medium. Further characterisation of the thin-film electrodes is required to explain the mechanism by which enhanced performance was obtained for Ti-doped electrodes (doctor blading) and poor photoactivity for Zn and Ti-doped samples which were synthesised by doctor blading and spray pyrolysis, respectively. Ti-doped hematite thin films will be synthesised in another way, such as dip coating so as to maintain an inverse opal structure as well as well adhesion. Also, a comparative study of the films will be carried out.
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Yarahmadi, Sina. "Preparation and performance of nanostructured iron oxide thin films for solar hydrogen generation." Thesis, Loughborough University, 2011. https://dspace.lboro.ac.uk/2134/8131.

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Nowadays, energy and its resources are of prime importance at the global level. During the last few decades there have been several driving forces for the investigation of new sources of energy. Hydrogen has long been identified as one of the most promising carriers of energy. Photoelectrochemical (PEC) water splitting is one of the most promising means of producing hydrogen through a renewable source. Hematite (α-Fe2O3) is a strong candidate material as photoelectrode for PEC water splitting as it fulfils most of the selection criteria of a suitable photocatalyst material for hydrogen generation such as bandgap, chemical and photelectrochemical stability, and importantly ease of fabrication. This work has explored different preparation techniques for undoped and Si-doped iron oxide thin films using microwave-assisted and conventional preparation methods. Two distinct strategies towards improving PEC performance of hematite photoelectrodes were examined: retaining a finer nanostructure and enhancing the photocatalytic behaviour through doping. By depositing thin films using atmospheric pressure chemical vapour deposition (APCVD) and aerosol-assisted CVD (AACVD) at high temperature, it was shown that a combination of different factors (such as silicon incorporation into the hematite structure and formation of lattice defects, along with a nanostructure of small agglomerate/cluster enhancing hole transportation to the surface) were the contributing factors in improving the PEC performance in hematite films. The role of the Si-containing precursors and their consecutive effect on nanostructure of the hematite films were investigated. Further work is needed to study the decomposition pattern of precursors and consequent effects of Si additives as well as co-dopants on fundamental physical and electrical properties of hematite electrodes. In addition, the feasibility of using microwave annealing for the fabrication of iron oxide thin films prepared by electrodeposition at low temperature was also investigated. Hematite films showed improved PEC performance when microwave assisted annealing was used. Microwave heating decreased the annealing temperature by ~40% while the PEC performance was increased by two-fold. The improved performance is attributed to the lower processing temperatures and rapidity of the microwave method that help to retain the nanostructure of the thin films whilst restricting the grain coalescence to a minimum. Around 60% of the energy can be saved using this low carbon foot-print approach compared to conventional annealing procedures for the lab-scale preparation of hematite films – a trait that will have significant implications for scale-up production. The lower processing temperature requirements of the microwave process can also open up the possibility of fabricating hematite thin films on conducting, flexible, plastic electronic substrates.
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Morber, Jenny Ruth. "1D nanowires understanding growth and properties as steps toward biomedical and electrical application /." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2008. http://hdl.handle.net/1853/24825.

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Thesis (Ph.D.)--Materials Science and Engineering, Georgia Institute of Technology, 2009.
Committee Chair: Snyder, Robert; Committee Co-Chair: Wang, Zhong Lin; Committee Member: El-Sayed, Mostafa; Committee Member: Milam, Valeria; Committee Member: Summers, Christopher; Committee Member: Wong, C. P.
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6

Li, Yanguang. "Nanostructured Materials for Energy Applications." The Ohio State University, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=osu1275610758.

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Breitenbach, Rene. "Development of Free-standing Nanostructured Iron Oxide Electrodes for High Energy and Power Density 3D Li-ion Microbatteries." Thesis, Uppsala universitet, Strukturkemi, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-301338.

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8

Lakay, Eugene Marlin. "Superparamagnetic iron-oxide based nanoparticles for the separation and recovery of precious metals from solution." Thesis, Stellenbosch : University of Stellenbosch, 2009. http://hdl.handle.net/10019.1/1866.

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Walker, Jeremy D. "Exploring the Synthesis and Characterization of Nanoenergetic Materials from Sol-Gel Chemistry." Diss., Georgia Institute of Technology, 2007. http://hdl.handle.net/1853/14573.

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Nanoenergetic composite materials have been synthesized by a sol-gel chemical process where the addition of a weak base molecule induces the gelation of a hydrated metal salt solution. A proposed proton scavenging mechanism, where a weak base molecule extracts a proton from the coordination sphere of the hydrated iron (III) complex in the gelation process to form iron (III) oxide/hydroxide, FeIIIxOyHz, has been confirmed for the weak base propylene oxide (PO), a 1,2 epoxide, as well as for the weak bases tetrahydrofuran (THF), a 1,4 epoxide, and pyridine, a heterocyclic nitrogen-containing compound. THF follows a similar mechanism as PO; the epoxide extracts a proton from the coordination sphere of the hydrated iron complex forming a protonated epoxide which then undergoes irreversible ring-opening after reaction with a nucleophile in solution. Pyridine also extracts a proton from the hydrated metal complex, however, the stable six-membered molecule has low associated ring strain and does not endure ring-opening. Fe2O3/Al energetic systems were synthesized from the epoxides PO, trimethylene oxide (TMO) and 3,3 dimethyl oxetane (DMO). Surface area analysis of the synthesized matrices shows a direct correlation between the surface area of the iron (III) oxide matrix and the quantified exothermic heat of reaction of the nano-scaled aluminum-containing energetic material due to the magnitude of the interfacial surface area contact between the iron (III) oxide matrix and the aluminum particles. The Fe2O3(PO)/Al systems possess the highest heat of reaction values due to the oxide interfacial surface area available for contact with the aluminum particles. Also, reactions containing nano-scale aluminum react differently than those containing micron-scale aluminum. RuO2/Al energetic systems behave differently dependent on the atmosphere the sample is heated. Heating the RuO2/Al samples in an inert atmosphere results in the complete reduction of the ruthenium oxide matrix to Ru(0) before reaction with the aluminum particles, resulting in the exothermic formation of RuxAly intermetallics, with the stoichiometry dependent on the initial Ru:Al concentration. However, heating the samples in an oxygen-rich atmosphere results in an exothermic reaction between RuO2 and Al.
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Kim, Il Tae. "Carbon-based magnetic nanohybrid materials for polymer composites and electrochemical energy storage and conversion." Diss., Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/45876.

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The role of nanohybrid materials in the fields of polymer composites and electrochemical energy systems is significant since they affect the enhanced physical properties and improved electrochemical performance, respectively. As basic nanomaterials, carbon nanotubes and graphene were utilized due to their outstanding physical properties. With these materials, hybrid nanostructures were generated through a novel synthesis method, modified sol-gel process; namely, carbon nanotubes (CNTs)-maghemite and reduced graphene oxide (rGO)-maghemite nanohybrid materials were developed. In the study on polymer composities, developed CNTs-maghemite (magnetic carbon nanotbues (m-CNTs)) were readily aligned under an externally applied magnetic field, and due to the aligned features of m-CNTs in polymer matrices, it showed much enhanced anisotropic electrical and mechanical properties. In the study on electrochemical energy system (Li-ion batteries), rGO-maghemite were used as anode materials; as a result, they showed improved electrochemical performance for Li-ion batteries due to their specific morphology and characteristics.
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Книги з теми "NANOSTRUCTURED IRON OXIDE"

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Yang hua tie na mi cai liao sheng wu xiao ying yu an quan ying yong. Bei jing Shi: Ke xue chu ban she, 2010.

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2

ZnO bao mo zhi bei ji qi guang, dian xing neng yan jiu. Shanghai Shi: Shanghai da xue chu ban she, 2010.

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3

Laurent, Sophie, Ghenadii Korotcenkov, and Morteza Mahmoudi. Iron Oxide Nanoparticles for Biomedical Applications: Synthesis, Functionalization and Application. Elsevier Science & Technology Books, 2017.

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4

Laurent, Sophie, and Morteza Mahmoudi. Iron Oxide Nanoparticles for Biomedical Applications: Synthesis, Functionalization and Application. Elsevier, 2017.

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5

Wigger, Henning. Environmental Release of and Exposure to Iron Oxide and Silver Nanoparticles: Prospective Estimations Based on Product Application Scenarios. Springer Fachmedien Wiesbaden GmbH, 2017.

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6

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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Deshpande, U. P., T. Shripathi, and A. V. Narlikar. Iron-oxide nanostructures with emphasis on nanowires. Edited by A. V. Narlikar and Y. Y. Fu. Oxford University Press, 2017. http://dx.doi.org/10.1093/oxfordhb/9780199533053.013.23.

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This article examines the properties of iron-oxide nanostructures, with particular emphasis on nanowires. It begins with an overview of iron-oxide nanostructures and nanowires, followed by a discussion of the synthesis of aligned ?-Fe2O3 nanowires and nanosheets by a simple thermal oxidation route. It then describes the preferential bending of [110] grown ?-Fe2O3 nanowires about the C-axis and quantitative estimation of nanowire alignment using X-ray diffraction and grazing incidence X-ray diffraction. It also considers the growth mechanism of ?-Fe2O3 nanowires and nanosheets, different nanowire morphologies, rotational slip in ?-Fe2O3 nanosheets, and the influence of local environment and substrate microstructure on nanowire growth.
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Martinez, Arturo I. Iron Oxides: Structure, Properties and Applications. Nova Science Publishers, Inc., 2012.

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Частини книг з теми "NANOSTRUCTURED IRON OXIDE"

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Köseoğlu, Y., F. Yıldız, D. K. Kim, M. Muhammed, and B. Aktaş. "Effect of MPEG Coating on Magnetic Properties of Iron Oxide Nanoparticles: An ESR Study." In Nanostructured Magnetic Materials and their Applications, 303–12. Dordrecht: Springer Netherlands, 2004. http://dx.doi.org/10.1007/978-1-4020-2200-5_24.

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Balakrishnan, Neethu T. M., Akhila Das, N. S. Jishnu, M. A. Krishnan, Sabu Thomas, M. J. Jabeen Fatima, Jou-Hyeon Ahn, and Raghavan Prasanth. "Electrospun Nanostructured Iron Oxide Carbon Composites for High-Performance Lithium Ion Batteries." In Electrospinning for Advanced Energy Storage Applications, 235–76. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-15-8844-0_9.

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3

Bhosale, Sanjana S., and Arpita P. Tiwari. "Oxygen-Deficient Iron Oxide Nanostructures for Photocatalytic Activities." In Chemically Deposited Nanocrystalline Metal Oxide Thin Films, 355–88. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-68462-4_14.

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Ali, Khuram, Yasir Javed, and Yasir Jamil. "Size and Shape Control Synthesis of Iron Oxide–Based Nanoparticles: Current Status and Future Possibility." In Complex Magnetic Nanostructures, 39–81. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-52087-2_2.

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5

Shimojo, Masayuki, Masaki Takeguchi, Kazutaka Mitsuishi, M. Tanaka, and Kazuo Furuya. "Fabrication of Iron Oxide Nanostructures by Electron Beam-Induced Deposition." In Materials Science Forum, 1101–4. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-462-6.1101.

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Khomutov, Gennady B. "DNA-Based Synthesis and Assembly of Organized Iron Oxide Nanostructures." In Nanomaterials for Application in Medicine and Biology, 39–57. Dordrecht: Springer Netherlands, 2008. http://dx.doi.org/10.1007/978-1-4020-6829-4_4.

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7

Balakrishnan, Neethu T. M., Akhila Das, N. S. Jishnu, M. A. Krishnan, Sabu Thomas, M. J. Jabeen Fatima, Jou-Hyeon Ahn, and Raghavan Prasanth. "Electrospun Nanostructured Iron Oxides for High-Performance Lithium Ion Batteries." In Electrospinning for Advanced Energy Storage Applications, 277–318. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-15-8844-0_10.

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8

Panko, A. V., I. G. Kovzun, O. M. Nikipelova, V. A. Prokopenko, О. А. Tsyganovich, and V. O. Oliinyk. "Nanostructural Effects in Iron Oxide Silicate Materials of the Earth’s Crust." In Springer Proceedings in Physics, 367–86. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-17759-1_25.

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Omoruyi, Inono C., Jeffery I. Omoruyi, Oscar N. Aghedo, Ukeme D. Archibong, and Ikhazuagbe H. Ifijen. "Application of Magnetic Iron Oxide Nanostructures in Drug Delivery: A Compact Review." In The Minerals, Metals & Materials Series, 229–42. Cham: Springer Nature Switzerland, 2023. http://dx.doi.org/10.1007/978-3-031-22524-6_22.

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Yadav, Sandeep, Piyush Avasthi, Viswanath Balakrishnan, and Atul Dhar. "Stacked Stainless Steel Mesh with Iron Oxide Nanostructures as a Substrate for NOx Emission Control of Diesel Engines." In Energy, Environment, and Sustainability, 509–25. Singapore: Springer Singapore, 2022. http://dx.doi.org/10.1007/978-981-16-8599-6_22.

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Тези доповідей конференцій з теми "NANOSTRUCTURED IRON OXIDE"

1

Merchan-Merchan, W., A. V. Saveliev, and Aaron Taylor. "Flame Synthesis of Nanostructured Transition Metal Oxides." In ASME 2008 International Mechanical Engineering Congress and Exposition. ASMEDC, 2008. http://dx.doi.org/10.1115/imece2008-68987.

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Various transition metal oxide nanostructures are synthesized using a novel probe-flame interaction method. An opposed flow flame of methane and oxygen enriched air provides a high-temperature reacting environment forming various metal oxide structures directly on the surface of pure metal probes. The unique thermal profile and chemical composition of the generated flame tends to convert almost pure bulk (99.9%) metallic materials into 1-D and 3-D structures of different chemical compositions and unique morphologies. The synthesized molybdenum, tungsten, and iron oxide structures exhibit unique morphological characteristics. The application of Mo probes results in the formation of micron size hollow and non-hollow Mo-oxide channels and elongated structures with cylindrical shapes. The use of W probes results in the synthesis of 1-D carbon-oxide nanowires, 3-D structures with rectangular shapes, and thin oxide plates with large surface areas. The formation of elongated iron-oxide nanorods is observed on iron probes. The iron nanorods’ diameters range from ten nanometers to one hundred nanometers with lengths of a few micrometers. Flame position, probe diameter, and flame exposure time tend to play an important role for material shape and selectivity.
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2

Srinivasan, P., A. J. Kulandaisamy, K. J. Babu, and J. B. Balaguru Rayappan. "P2GS.17 - Fabrication of Acetaldehyde Gas Sensor through Nanostructured Iron Oxide Thin Films." In 17th International Meeting on Chemical Sensors - IMCS 2018. AMA Service GmbH, Von-Münchhausen-Str. 49, 31515 Wunstorf, Germany, 2018. http://dx.doi.org/10.5162/imcs2018/p2gs.17.

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3

Gan, Yong X., and Michelle L. Hyers. "Design, Fabrication and Characterization of Nanostructured Fiber Arrays for Fuel Cell Applications." In 2007 First International Conference on Integration and Commercialization of Micro and Nanosystems. ASMEDC, 2007. http://dx.doi.org/10.1115/mnc2007-21087.

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Design, fabrication and characterization of well-aligned porous nanofibers with large electroactive surface areas were performed. Highly ordered nickel-iron alloy nanofiber arrays were fabricated within porous anodic aluminum oxide (AAO) templates via electrodeposition. In order to further increase the electroactive surface area, dealloying was performed to extract the less noble metallic element, iron, from the nickel alloy to form porous structures. Electrocatalytic properties of the nanoarchitectured porous Ni nanofiber arrays were characterized by cyclic voltammetry (CV). Comparative studies on the electrochemical activities of the nanoarchitectured porous Ni fiber electrode in pure methanol and methanol sulfuric mixture solution were performed. The potential for methanol oxidation is about 0.4 V. It is found that sulfuric acid facilitates the oxidation of methanol. Preliminary studies on the electrocatalytic behavior of the nanoporous nickel in several other solutions containing sugar, orange juice, soy beam juice, tomato sauce were also performed. The stress state of the nanofiber in the AAO templates was derived as well.
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4

Ravi, B. G., S. Sampath, R. Gambino, P. S. Devi, and J. B. Parise. "Plasma Spray Synthesis from Precursors: Progress, Issues and Considerations." In ITSC2006, edited by B. R. Marple, M. M. Hyland, Y. C. Lau, R. S. Lima, and J. Voyer. ASM International, 2006. http://dx.doi.org/10.31399/asm.cp.itsc2006p0871.

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Abstract Precursor plasma spray synthesis is an innovative and rapid method to make functional oxide ceramic coatings by starting from solution precursors and directly producing inorganic films. This emerging method, utilizes molecularly mixed precursor liquids, which essentially avoids the handling and selection of powders, opening up new avenues for developing compositionally complex functional oxide coatings. Precursor plasma spray also offers excellent opportunities in exploring the non-equilibrium phase evolution during plasma spraying of multi-component oxides from inorganic precursors. Although there have been efforts in this area since the 1980s and early 1990s with the goal of synthesizing nanoparticles, only recently has the work progressed in the area of functional systems. At the Center for Thermal Spray Research an integrated investigative strategy has been conducted to explore the benefits and limits of this synthesis strategy. Water and alcohol based sol/solution precursors derived from various chemical synthesis methods were used as feedstocks to deposit thin/thick films of spherical and nanostructured coatings of yttrium aluminum garnet (YAG), yttrium iron garnet (YIG), lanthanum strontium manganite (LSM) and Zr-substituted yttrium titanates, compositions of Y2O3-Al2O3 and their microstructural space centered around stochiometric YAG. A detailed discussion of the salient features of RF induction plasma spraying (RFPPS) approach, results obtained in the investigations to develop various functional oxide coatings and process issues and challenges are presented.
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5

Joseph, Julie Ann, Aijo John K., Stephen K. Remillard, and Rachel Reena Philip. "Effect of electrolyte concentration on fabrication and characterization of iron oxide nanostructures." In THE 3RD INTERNATIONAL CONFERENCE ON OPTOELECTRONIC AND NANO MATERIALS FOR ADVANCED TECHNOLOGY (icONMAT 2019). Author(s), 2019. http://dx.doi.org/10.1063/1.5093839.

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Wang, Ken Xingze, Zongfu Yu, Victor Liu, Mark Brongersma, Thomas Jaramillo, and Shanhui Fan. "Near Perfect Sunlight Absorption in 20nm-Thick Iron Oxide Photoanode Based on Core-Shell Nanocone Structure." In Optical Nanostructures and Advanced Materials for Photovoltaics. Washington, D.C.: OSA, 2013. http://dx.doi.org/10.1364/pv.2013.pw2c.4.

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7

Olejnik, V. A., A. V. Panko, I. G. Kovzun, E. V. Ablets, E. A. Tsyganovich, V. A. Prokopenko, and E. M. Nikipelova. "Processes of metamorphism in iron-oxide-silicate rocks, their microbiological, nanochemical and nanostructural transformations." In 2016 International Conference on Nanomaterials: Application & Properties (NAP). IEEE, 2016. http://dx.doi.org/10.1109/nap.2016.7757285.

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Papynov, E. K., O. O. Shichalin, A. A. Belov, A. S. Portnyagin, V. Yu Mayorov, E. A. Gridasova, A. V. Golub, A. S. Nepomnyashii, I. G. Tananaev, and V. A. Avramenko. "Synthesis of nanostructured iron oxides and new magnetic ceramics using sol-gel and SPS techniques." In PROCEEDINGS OF THE 6TH INTERNATIONAL ADVANCES IN APPLIED PHYSICS AND MATERIALS SCIENCE CONGRESS & EXHIBITION: (APMAS 2016). Author(s), 2017. http://dx.doi.org/10.1063/1.4975458.

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Su, Di, Ronghui Ma, and Liang Zhu. "Numerical Study of Nanofluid Transport in Tumors During Nanofluid Infusion for Magnetic Nanoparticle Hyperthermia Treatment." In ASME 2012 Third International Conference on Micro/Nanoscale Heat and Mass Transfer. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/mnhmt2012-75101.

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The application of nanostructures in hyperthermia treatment of cancer has attracted growing research interest due to the fact that magnetic nanoparticles are able to generate impressive levels of heat when excited by an external magnetic field [1–3]. Various types of nanoparticles such as magnetite and superparamagentic iron oxide nanoparticles have demonstrated great potentials in hyperthermia treatment; however many challenges need to be addressed for future applications of this method in clinical studies. One leading issue is the limited knowledge of nanoparticle distribution in tumors. Since the temperature elevation is induced as the result of the heat generation by the nanoparticles, the concentration distributions of the particles in a tumor play a critical role in determining the efficacy of the treatment. The lack of control of the nanoparticle distribution may lead to inadequacy in killing tumor cells and/or damage to the healthy tissue.
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10

Horowitz, Emmanuel. "The Importance of Establishing an Operational Approach for the Selection of Materials in the Reactors of the Future." In 16th International Conference on Nuclear Engineering. ASMEDC, 2008. http://dx.doi.org/10.1115/icone16-48651.

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Nuclear scientists and engineers should consider adopting a more operational approach for the purpose of selecting their future materials. For each type of nuclear power generating reactor, for each coolant (water, helium or liquid metal), the next generation of specialists and decision-makers will need to choose and optimise the iron or nickel alloys, steels, ODS (oxide dispersed strengthened steels) and ceramics that are going to be used. It may well be considered that either each reactor type has its own, specific materials, or, in a complementary manner, that the efforts for improvements should be shared. At high temperatures, as found on fuel-cladding liners, heat exchangers or even tubes or tube liners, different types of steels and alloys may be envisaged. It is considered that austenitic steels provide a better creep resistance at high temperature but they must be stabilized by nickel, thereby becoming more expensive. Ferrite steels could be better as far as swelling, mechanical strength and thermal behaviour are concerned. To withstand corrosion, chromium or aluminium, ODS steels could turn out to be good solutions, if they can comply with stringent criteria. Concerning heat exchangers, choices must be made between iron and nickel alloys, according to proposed operating conditions. In the case of sodium-cooled rapid neutron reactors (RNRs), ferritic-martensitic alloys with 9%–12% chromium or chromium ODS steels could prove suitable, especially if we judge by their specific mechanical behaviour, up to at least 700°C. Nevertheless, behaviour of these steels — with respect to ageing, anisotropy, radiation induced segregation, radiation induced precipitation, reduction of activation products and welding — needs be better understood and qualified. Sodium heat exchanger materials should be carefully chosen since they have to withstand corrosion arising from the primary flow and also from the secondary or tertiary flow (either sodium or molten salts, gas or water); therefore, experimental loops are necessary to gain improved understanding and assessment of the designs envisioned. One way to improve alloys is through thermal, mechanical treatments or by surface treatments. A better way could, however, be to improve the nanostructure and mesostructure of the materials chosen at the drawing-board stage, for instance by nano-size cluster dispersion and grain size controls; experimental tests, microscope and spectroscope observations, multi-scale modelling and thermodynamics computing could also help calibrate and implement these improvements. Large, experimental databases and codes will be the keystone to defining more operational knowledge bases that will then allow us to determine terms of reference for the new materials. Failing this, time will be running out — within the next twenty years — to design and develop nuclear prototypes consistent with the criteria laid down for “Generation IV” reactors.
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