flame synthesis – TechConnect Briefs

Gas phase sodium flame synthesis of non-oxide metallic powders

Abid A., Smith G., Krause M., Yin A., Sungail C., GAM, US

Demand for new high surface area non-oxide materials is growing to support the diverse market such as energy storage, catalysts, electronic materials etc. Tight control of powder purity and flow properties are important parameters for [...]

Catalytic oxidation of carbon using TiO2 based nanoparticles prepared using flame synthesis

Memon N.K., Ismail M.A., Anjum D.H., Chung S.H., Qatar Environment and Energy Research Institute, QA

Titanium dioxide (TiO2) nanoparticles are used in numerous applications involving catalysis, photo-catalysis, water purification, electrode for Li-ion batteries, polymer fillers, and pigments. Multiple-diffusion flames are used to coat/dope the TiO2 nanoparticles with various elements such [...]

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 [...]

Pilot-scale Nanoparticle Manufacture

Wegner K., Grohn A., Multer S., ETH Zürich, CH

A fully automated pilot plant for nanoparticle manufacture by flame spray pyrolysis is presented that allows continuous production of nanopowders at rates up to 500 g/h. For the example of zirconia the scale-up from the [...]

Novel Flame-Gradient Method for Synthesis of Metal Oxide Nanomaterials

Merchan-Merchan W., Saveliev A.V., Desai M., The University of Oklahoma, US

Various transition metal oxide nanostructures are synthesized using a novel probe-flame gradient method. An opposed flow flame of methane and oxygen enriched air provides a hightemperature reacting environment forming various structures directly on the surface [...]

Two-nozzle flame synthesis of tailored Pt/Ba/Al2O3 nanoparticles for NOx storage-reduction

Strobel R., Piacentini M., Maciejewski M., Baiker A., Pratsinis S.E., ETH Zürich, CH

NOx storage reduction (NSR) catalysts are applied for the abatement of NOx from engines operating under lean conditions, where conventional TWC catalysts are inefficient. Here, a novel two-nozzle flame spray pyrolysis (FSP) process was developed [...]

Integrated Gas-Phase Manufacturing of Nanostructured Particulate Films

Wegner K., Piseri P., Bongiorno G., Vinati S., Pratsinis S.E., Milani P., Tethis S.r.l., IT

An integrated process for controlled one-step production of nanostructured particulate thin films is presented, combining gas-phase nanoparticle synthesis, aerodynamic particle manipulation, size selection and deposition. Such films find industrial application for instance in fuel cells, [...]

Europium-Doped Yttrium Silicate Nanophosphors Prepared by Flame Synthesis

Qin X., Ju Y., Bernhard S., Yao N., Princeton University, US

Europium doped yttrium silicate nanophosphors were successfully synthesized for the first time by using the flame spray pyrolysis method at different silicon and europium concentrations. The effect of silicon concentration on the crystal structure, morphology, [...]

Overview – Nanoparticulate Dry (Flame) Synthesis & Applications

Pratsinis S.E., ETH Zürich, CH

Flame synthesis is a scalable technology that was developed largely by valiant evolutionary research for manufacture of commodities (e.g. carbon blacks, fumed silica and pigments). In the last 5-10 years, however, major advances in the [...]