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Synthesis Of Iron Oxide Nanocrystals In Low Pressure Premix Flames
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Book Synopsis Synthesis of Iron Oxide Nanocrystals in Low-pressure Premix Flames by : Amir Hevroni
Download or read book Synthesis of Iron Oxide Nanocrystals in Low-pressure Premix Flames written by Amir Hevroni and published by . This book was released on 2010 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Semi-conducting Metal Oxide Nanoparticles from a Low-pressure Premixed H_1tn2/O_1tn2/Ar Flame: Synthesis and Characterization by : Pascal Onyibo Ifeacho
Download or read book Semi-conducting Metal Oxide Nanoparticles from a Low-pressure Premixed H_1tn2/O_1tn2/Ar Flame: Synthesis and Characterization written by Pascal Onyibo Ifeacho and published by Cuvillier Verlag. This book was released on 2008 with total page 131 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Nanoparticle Synthesis in Low Pressure Flames by : Andrei Colibaba-Evulet
Download or read book Nanoparticle Synthesis in Low Pressure Flames written by Andrei Colibaba-Evulet and published by . This book was released on 2000 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Index Medicus written by and published by . This book was released on 2004 with total page 2036 pages. Available in PDF, EPUB and Kindle. Book excerpt: Vols. for 1963- include as pt. 2 of the Jan. issue: Medical subject headings.
Book Synopsis Synthesis of Iron Oxide Nanoparticles in a Counterflow Diffusion Flame Reactor by : Hector Enrique Ruiz
Download or read book Synthesis of Iron Oxide Nanoparticles in a Counterflow Diffusion Flame Reactor written by Hector Enrique Ruiz and published by . This book was released on 2008 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt: "A Counterflow Diffusion Flame (CDF) reactor was used to produce iron oxide nanoparticles. The experimental work was performed to study synthesis conditions and characterize the iron oxide nanoparticles. The parameters studied are those that control the flame structure, namely, gas flow rates and vacuum; other parameters include the precursor volume flow rate, and the relative location and temperature of the collecting probe inside the flame. Hexagonal nanoparticles were the most commonly observed shape. Hexagonal-shaped nanoparticles are mainly formed under stoichiometric conditions and with a high temperature profile in the flame. Cubic nanoparticles were also observed. The main parameter for the formation of cubic-shaped nanoparticles was found to be the equivalence ratio. A minimum value of less than one percentage of cubic nanoparticles was observed at equivalence ratios ranging between 0.7488 and 0.9283. The main effect on particle size was observed to be from the hydrogen flow rate, which was found that the higher the hydrogen flow rate is, the smaller the average nanoparticle size. A secondary minor effect was observed from variations of vacuum flow rate. This effect could be associated with changes in the total mass or volumetric flow rate balance. Adjusting N2 in H2 stream allowed the synthesis of samples with approximately 95% hexagonal nanoparticles without agglomerates"--Abstract, leaf iii.
Book Synopsis Chemistry of Nanocrystalline Oxide Materials by : K. C. Patil
Download or read book Chemistry of Nanocrystalline Oxide Materials written by K. C. Patil and published by World Scientific. This book was released on 2008 with total page 362 pages. Available in PDF, EPUB and Kindle. Book excerpt: Nano-oxide materials lend themselves to applications in a wide variety of emerging technological fields such as microelectronics, catalysts, ceramics, coatings, and energy storage. However, developing new routes for making nano-based materials is a challenging area for solid-state materials chemists. This book does just that by describing a novel method for preparing them. The authors have developed a novel low-temperature, self-propagating synthetic route to nano-oxides by the solution combustion and combustible precursor processes. This method provides the desired composition, structure, and properties for many types of technologically useful nanocrystalline oxide materials like alumina, ceria, iron oxides, titania, yttria, and zirconia, among others.The book is particularly instructive in bringing readers one step closer to the exploration of nanomaterials. Students of nanoscience can acquaint themselves with the actual production and evaluation of nanopowders by this route, while academic researchers and industrial scientists will find answers to a host of questions on nano-oxides. The book also provides an impetus for scientists in industrial research to evaluate and explore new ways to scale up the production of nanomaterials, offering helpful suggestions for further research.
Book Synopsis Fundamental Studies of Gas-to-particle Conversion for Nanoparticle Synthesis in Flames by : Shruthi Dasappa
Download or read book Fundamental Studies of Gas-to-particle Conversion for Nanoparticle Synthesis in Flames written by Shruthi Dasappa and published by . This book was released on 2021 with total page 211 pages. Available in PDF, EPUB and Kindle. Book excerpt: The dissertation focuses on fundamental processes involved in the formation of carbon and manganese oxide nanoparticles by gas-to-particle conversion. A systematic approach through complementary experimental and modeling is implemented to study the evolution of flame formed particles and their dependence on flame conditions and growth environment. Stretch stabilized stagnation flames are utilized to assess flame temperature and equivalence ratio effects for soot formed in higher-temperature regimes. This unique condition (Tf > 2100 K) results in a new combination of "young", nucleation sized particles with a "mature" carbon structure. A significant transformation in carbon structure observed from the evolution in Raman spectra promises development of functional high-surface area sp2 carbon materials. Particle nucleation and growth of manganese oxide nanoparticles is examined in a complementary experimental and modeling study of high temperature premixed stagnation flames. Manganese oxide nanoparticles having varying oxidation states are observed depending on the flame conditions. Analysis of the formation of MnO indicates that a thermodynamic barrier limits nucleation. Fundamental insights gained from simple laboratory flames inform particle formation in turbulent spray flames. The dissertation provides insight into flame spray synthesis (FSS), facilitating scaled, cost-effective, and versatile nanoparticle synthesis. FSS of carbon black is studied using coal tar distillate diluted in toluene as a carbon particle feedstock. Although the precursor is the same, this synthesis differs from conventional furnace black processes. Particles are formed directly in the flame rather than through downstream pyrolysis. Resulting carbon black particles are small but could potentially be tailored based on growth conditions. A new diagnostic for determining chemical species information is introduced in collaboration with Argonne National Laboratory. Multi-probe optical emission spectroscopy is performed to analyze the axial evolution of manganese during FSS. "Optical Emission Spectroscopy Tool (OSAT)" is developed to enable data analysis, systematic feature recognition and axial species evolution. The axial evolution of Mn(I) through the flame provides fundamental insight such as the location of oxide formation. This dissertation focusses on fundamental gas-to-particle conversion processes. Understanding the fundamental dependence of nanoparticles on the flame growth conditions is key towards engineering the size, structure, and morphology.
Book Synopsis Flame Spray Pyrolysis for Synthesizing Functional Nanoparticles by : Haipeng Li
Download or read book Flame Spray Pyrolysis for Synthesizing Functional Nanoparticles written by Haipeng Li and published by . This book was released on 2021 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: In this thesis ''Flame spray pyrolysis for synthesizing functional nanoparticles: Fundamental investigations on single and double droplet combustion'', experimental studies on droplet combustion and explosions to fundamentally understand the particle formation from liquid droplets and droplet interactions in the nanofabrication process of flame spray pyrolysis (FSP) are shown. FSP is one promising and versatile flame aerosol technique for fast synthesis of functional and engineering nanomaterials. This gas-phase synthesis nanomaterial process is famous and attractive for its reproducibility and scalability, and thus has potential applications for commercial scale-up production in industry. Gas-to-particle conversion and droplet-to-particle conversion are two particle formation routes in FSP, which decide the quality of produced particles. The particle formation mechanism is associated with the mass transfer of the precursor from liquid droplet to gas phase. Therefore, it is necessary and important to investigate droplet combustion behavior of precursor solutions, for providing fundamental insights into the mechanisms of droplet combustion and particle formation in FSP. The focus of this work is divided into three parts. Single droplet combustion and FSP synthesis of iron oxide nanoparticles using low- and high-volatility precursors were done, aiming to investigate the mechanism and occurrence condition of droplet micro-explosions, nanoparticle formations in single droplet combustion and FSP, as well as the promotion of homogeneous nanoparticle synthesis from low-volatility precursors. The influences of precursor choices, precursor concentrations and solvent compositions on droplet combustion behaviors, rainbow signals and the synthesis of iron oxide particles were experimentally investigated. The mechanism and occurrence conditions of droplet micro-explosions were discussed and summarized, which could be used to trigger explosions of droplets containing metal nitrates. The synthesized particles were characterized using Brunauer-Emmett-Teller (BET), X-ray diffraction (XRD), as well as low- and high-resolution transmission electron microscopy (TEM and HRTEM) techniques. The similarity of nanoparticles prepared from single droplet combustion and FSP was explained. It is found that the secondary-atomization of droplets induced by micro-explosions efficiently promotes the production of homogeneous nanoparticles. Three-dimensional measurements of double droplet combustion of the pure solvent and the precursor solution were conducted, targeting to study the influence of a neighboring droplet on combustion behaviors (droplet interactions), and the occurrence of double droplet explosions. The developed three-dimensional measurement technique using two highly time-synchronized high-speed cameras could provide highly time-resolved information including droplet diameters, flame diameters, droplet 3D trajectories, droplet 3D velocities, and the center distances between the two burning droplets. Droplet interactions in the pure oxygen atmosphere as well as in the mixture of oxygen and nitrogen atmosphere were investigated. Droplet micro-explosions were first observed during double droplet combustion experiments of precursor solutions. The occurrence of double droplet explosions is affected by droplet interactions. Digital in-line holography measurements of single droplet combustion were performed, and the focus is to detect the size of non-burning droplets and to estimate the refractive index gradient surrounding the burning droplet. The constructed experimental setup and the developed imaging processing method are able to obtain clear hologram signals. The developed methods for hologram formation and numerical reconstruction have shown their abilities to detect droplet size. The influence of the surrounding flame on hologram signals are experimentally identified, which is proposed to estimate the refractive index gradient surrounding burning droplets. This thesis shows the capability of using droplet combustion experiments to provide fundamental information of droplet combustion, explosion and interaction for FSP. These investigations could be used to explore low-cost precursor-solvent systems for producing homogeneous nanoparticles, to figure out the interaction between burning droplets, as well as to understand the droplet flame.
Book Synopsis Iron Oxide Nanoparticles for Biomedical Applications by : Sophie Laurent
Download or read book Iron Oxide Nanoparticles for Biomedical Applications written by Sophie Laurent and published by Elsevier. This book was released on 2017-10-20 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt: Iron Oxide Nanoparticles for Biomedical Applications: Synthesis, Functionalization and Application begins with several chapters covering the synthesis, stabilization, physico-chemical characterization and functionalization of iron oxide nanoparticles. The second part of the book outlines the various biomedical imaging applications that currently take advantage of the magnetic properties of iron oxide nanoparticles. Brief attention is given to potential iron oxide based therapies, while the final chapter covers nanocytotoxicity, which is a key concern wherever exposure to nanomaterials might occur. This comprehensive book is an essential reference for all those academics and professionals who require thorough knowledge of recent and future developments in the role of iron oxide nanoparticles in biomedicine. Unlocks the potential of iron oxide nanoparticles to transform diagnostic imaging techniques Contains full coverage of new developments and recent research, making this essential reading for researchers and engineers alike Explains the synthesis, processing and characterization of iron oxide nanoparticles with a view to their use in biomedicine
Book Synopsis Green Nanomaterials as Potential Antimicrobials by : Ali Haider
Download or read book Green Nanomaterials as Potential Antimicrobials written by Ali Haider and published by Springer Nature. This book was released on 2022-11-10 with total page 157 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book focuses on nanomaterials with antibacterial properties. Antibacterial resistance is a growing concern that poses a serious threat to public health worldwide. This book looks at the fabrication, material's properties, and characterization of a range of metallic, bimetallic, and metal-oxide-based nanomaterials that can be exploited for their antimicrobial properties. A key focus of this book is its emphasis on ‘green’ synthesis of nanomaterials, as many conventional routes of nanomaterial fabrication do not fulfill key sustainability criteria in terms of their toxicity and lack of eco-friendliness. Additionally, this book introduces the application of nanoparticles to veterinary medicine. Given the ever-increasing global livestock population coupled with the emergence of drug-resistant pathogens of animal origin (bacterial, parasitic, and hemoprotozoa), the use of nanoparticles as antibacterial agents represents a paradigm shift in every aspect of veterinary care. Authored by scholars with combined expertise in nanomaterials and veterinary medicine, this book provides valuable information for researchers working on sustainable nanomaterials with antibacterial properties.
Book Synopsis Aspekte von Erziehung, Schule und Ausbildung in der heutigen Gesellschaft by :
Download or read book Aspekte von Erziehung, Schule und Ausbildung in der heutigen Gesellschaft written by and published by . This book was released on 1979 with total page 63 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Low-pressure Flame Synthesis of Tin Oxide Nanopowders by : Steven Northington Bailey
Download or read book Low-pressure Flame Synthesis of Tin Oxide Nanopowders written by Steven Northington Bailey and published by . This book was released on 2002 with total page 242 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Controlled Combustion Synthesis of Iron Oxide Nanoparticles by : Zhiqing Zhang
Download or read book Controlled Combustion Synthesis of Iron Oxide Nanoparticles written by Zhiqing Zhang and published by . This book was released on 1995 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis On Flame Synthesis of Metal Oxide Nanoparticles by : Manfred Geier
Download or read book On Flame Synthesis of Metal Oxide Nanoparticles written by Manfred Geier and published by . This book was released on 2009 with total page 460 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Superparamagnetic Iron Oxide Nanoparticles by : Morteza Mahmoudi
Download or read book Superparamagnetic Iron Oxide Nanoparticles written by Morteza Mahmoudi and published by . This book was released on 2010-10 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: In recent years, the fabrication of nanoparticles and exploration of their properties have attracted the attention of physicists, chemists, biologists and engineers. Interest in nanoparticles arise from the fact that the mechanical, chemical, electrical, optical, magnetic, electro-optical and magneto-optical properties of these particles are different from their bulk properties and depend on the particle size. There are numerous areas where nanoparticulate systems are of scientific and technological interest. This book reviews research on the various components of superparamagnetic iron oxide nanoparticles.
Book Synopsis In-Situ Diagnostics in Low Pressure Flame Synthesis of Nanopowders by : Yijia Chen
Download or read book In-Situ Diagnostics in Low Pressure Flame Synthesis of Nanopowders written by Yijia Chen and published by . This book was released on 1998 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Superparamagnetic Iron Oxide Nanoparticles by : Morteza Mahmoudi
Download or read book Superparamagnetic Iron Oxide Nanoparticles written by Morteza Mahmoudi and published by . This book was released on 2011 with total page 225 pages. Available in PDF, EPUB and Kindle. Book excerpt: