Papers – Page 51 – TechConnect Briefs

Novel Syntheses of Silica-Gold Core-Shell Particles

Cook M.J., Johnston J.H., Victoria University of Wellington, NZ

Methods for the synthesis of silica-gold core-shell particles presented in literature are not considered commercially viable due to various requirements: high reaction temperatures, the use of light-sensitive reagents, the use of ex-situ gold seeding adding [...]

Nanoparticles: Synthesis and Film Deposition Using a Simple and Fast Centrifuge Sedimentation Method

Wang J-S., Markelonis A.R., Wai C.M., Brown G.J., Air Force Research Laboratory, US

Gold nanoparticles were prepared by reduction of gold cations suspended in sodium bis(2-ethylhexyl)sulfosuccinate (AOT) water-in-hexane microemulsions with another AOT microemulsion containing a reducing agent NaCNBH3. The size of the Au nanoparticles can be controlled by [...]

Stabilization of mono- and bimetallic nanoparticles in ionic liquids

Darwich W., Arquillière P., Helgadottir I., Haumesser P.-H., Santini C.C., CEA/LETI/MINATEC, FR

Metallic nanoparticles (NPs) are needed in a range of applications such as the fabrication of advanced microelectronic, magnetic or optical devices. Hence, substantial effort has been centered on stabilizing transition-metal nanoparticles in wet synthesis processes, [...]

Synthesis and characterization of nanoreactors within polymeric nanotemplates

McTaggart M., Groves M., Malardier-Jugroot C., Jugroot M., Malardier-Jugroot C., Royal Military College of Canada, CA

The paper will present a novel method for the synthesis of metal nanoclusters with diameters < 3nm within an amphiphilic nanotube template without the use of a reducing agent. This environmentally friendly synthesis occurs at [...]

Synthesis and Characterization of Copper (i) Oxide and Zinc Oxide Quantum Dot Materials and the Development of New Fluorescent Fibre Composites

Johnston J.H., Zeller A.J., Victoria University of Wellington, NZ

New fluorescent composites of Cu2O and ZnO quantum dots with wool and paper fibres for potential use in photoluminescent fabrics, packaging and labelling papers, have been developed. The fluorescent colours can be tuned by varying [...]

A High-throughput Electrospray Nozzle for Nanoparticle Production

Fu H., Hoerr R.A., Ryan P.J., Nanocopoeia, Inc, US

Electrospray is well-known for its capability of producing monodisperse particles with sizes ranging from a few nanometers to micrometers. Even though electrospray has been used in a wide range of research areas, its low throughput [...]

Flame Synthesized Nanostructured WO3 Thin Films for Photoelectrochemical Water Splitting

Ding J-R, Kim K.S., Kangwon Natonal University, KR

Tungsten oxide has been considered as a promising photoanode material for photoelectrochemcial water-splitting techonologies due to its ralatively favorable band gap position and good charge transport property and stablity in aqueous solution. Typically, 1-dimentional structure [...]

Preparation of Photocatalytic Silicon Core-shell Nanoparticles Covered by ZnS Shell in Solid-Gas Reaction

Dvorsky R., Praus P., Svoboda L., Matýsek D., Dropa T., Trojková J., Šollová K., VŠB-Technical University of Ostrava, CZ

For easy handling in some practical processes, active nanoparticles are usually deposited on surfaces of larger carrier particles. In our previous work, the particles of montmorillonite MMT with a mean size of 300 nm served [...]

Uniform Melt State Process For The Production Of Nanostructured Materials

Redjdal M., Hadidi K., Sundaram S.K., Amastan LLC, US

Existing processes for the production of nanostructured composite materials suffer from non-homogeneity of feedstock and non uniformity of thermal processing path. Amastan’s UniMelt™ process solves both problems through the use of uniform temperature profile microwave [...]

Nano-Silicon and Non-Oxide Ceramics Synthesis via Gas-phase Sodium Reduction Aerosol Reactor

Schimmoeller B., Massey K., Kodas T., Smith G., Kutsovsky Y., Cabot Corporation, US

The largest volumes of nano-particles in consumer products include carbon black for reinforcement applications (e.g. tires), silicon dioxide (SiO2) as rheology agent (e.g. silicones) and titanium dioxide (TiO2) in pigments and photocatalysts. All of those [...]