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Showing 1 to 13 of 13 for “"Hollow Spheres"”.
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Understanding and Tuning Nanostructured Materials for Chemical Energy Conversion
… and lithium ion batteries applications. Hollow CuO spheres were synthesized by aerosol spray pyrolysis, employing a gas blowing mechanism for the formation of hollow structure during aerosol synthesis. The materials synthesized as oxidizers in nanothermite demonstrated superior …
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Moderator displacers for reducing coolant void reactivity in CANDU reactors: a neutronics scoping study.
… with displacers in the shape of close-packed hollow spheres. Results show that it is possible to reduce the coolant void reactivity through the use of spherical moderator displacers, albeit at a cost in discharge burn-up.
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Functional particles for controlled release and cell surface engineering
… These polymer vesicles typically present as hollow spheres that contain a hydrophilic core surrounded by a hydrophobic membrane, each of which can be loaded with a wide array of small and large molecules of interest. With the capacity to engineer and compartmentalize the properties of these …
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Materials with engineered mesoporosity for programmed mass transport
… plating of metals to alter the mesoporous hollow sphere (MHS) materials and properties. The focus of discussion will then shift to the transport of ions into and out of a hierarchically structured gold electrode. Finally, a model λ-bactiophage was developed to study the electromigration of …
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Functional nanostructured hydrothermal carbons for sustainable technologies : heteroatom doping and superheated vapor
… of sulfur and sulfur/nitrogen doped microspheres was presented whereby it was shown that the binding state of sulfur could be influenced by varying the type of sulfur source. Pyrolysis may additionally be used to tune the heteroatom binding states which move to more stable motifs with …
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Development of Mesoporous Silicas, Responsive Polymer Microgels, and Related Nanocomposites
… an interesting mesopore structure, which is the hollow silica nanosphere (HSN). The single-micelle-templating strategy provides a general approach for the synthesis of HSNs at room temperature, and the judicious choice of the framework precursor and synthesis conditions allows for the synthesis …
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Direct Templating of Semiconductor Nanostructures With Lyotropic Liquid Crystals
… (consisting of spherical micelles) yielded a hollow, 20--100 nm in diameter spherical product. The diameter of this product is 1--5 times the diameter of the micelles making up the cubic liquid crystal, so it does not appear the hollow spheres are a directly templated product. Instead, some …
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Fabrication and characterization of hollow silica aerogel spheres using sol-gel processing in the dual nozzle generation system
A system was designed for fabricating uniform, hollow silica aerogel spheres of controlled size, thickness, and porosity that may be required for manufacture of cryogenic ICF (Inertial Confinement Fusion) Targets. The method was a combination of a droplet generation method and sol-gel processing. …
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Design, Fabrication and Applications of Organic-Inorganic Hybrid Systems
… series of closed, intact and mechanically robust hollow spheres, composed of pure and mixed metal oxides was demonstrated. The removal of polystyrene core from PS-TiO2 and PS-Ta2O5 hybrid particles by chemical or thermal treatment resulted into the hollow TiO2 and Ta2O5 spheres, respectively. …
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Metal oxide nanostructures and their applications
… and optical characterizations of In-Doped ZnO hollow spheres composed of nanosheets networks and nanocones. Finally, section 6 illustrates the utilization of α-Fe2O3 hexagonal nanoparticles for environmental remediation and smart sensor applications. Moreover the synthesized α-Fe2O3 hexagonal …
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Microstructured materials synthesis via salt-assisted ultrasonic spray pyrolysis
… USP is used to make roughened ZnO microspheres. By controlling the amount of NaCl in the precursor solution, the agglomerated ZnO nanoparticles will form microspheres with varying degrees of roughness. The size of the particles formed is also easily controlled by adjusting the …
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Flüssigphasenabscheidung von Titandioxid auf Polymerlatex-Templaten
Es wurde der Einfluss einer Substratfunktionalisierung auf die Flüssigphasenabscheidung von TiO2 auf dispersen Polymerlatexpartikeln in wässriger Lösung untersucht. Als Partikelsubstrate wurden zwei verschiedene Polystyrol-Latizes verwendet: Ein Latex mit einer geringen negativen …
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Control of micro- and nanostructure: I. polymer gas chromatography microcolumns and II. applications of ultrasound
… microsopheres. Magnesium and calcium borate microspheres were produced as hollow spheres with very thin, smooth shells. Nickel and cobalt borate microspheres were also produced, and they exhibited slightly different morphology with rougher surfaces. The nickel and cobalt microspheres show some …