flame spray pyrolysis – TechConnect Briefs

Iron-oxide nanoparticle synthesis from liquid spray flames under variable pressure conditions

Hardt S., Wiggers H., Wlokas I., Kempf A., Schulz C., University of Duisburg-Essen, DE

Iron-oxide nanoparticles have been synthesized via liquid-fed flame spray pyrolysis (FSP) under variable pressure conditions. The work focuses on the effect of pressure, precursor flow rate, and flame stoichiometry on particle size, composition, and morphology. [...]

Effect of particle presence on gas phase temperature in the flame spray pyrolysis

Engel S.R., Gao Yi, Koegler A.F., Kilian D., Seeger T., Peukert W., Leipertz A., Department of Engineering Thermodynamics, DE

For the production of manufactured nanoparticles at a commercial scale flame processes are most frequently used. An important basis for understanding the complexity of this process is the characterization of the combustion process in dependence [...]

Gas Sensing Properties of Zn-Doped Anisometric Fe2O3 Nanoparticles

Kim T., Sharp A.C., Yim H., Guo B., Texas A&M University, College Station, US

In this study, we synthesized nanocrystalline Zn-doped Fe2O3 by flame spray pyrolysis under different conditions, and then investigated the gas sensing characteristics of these particles. The response of the gas sensor to acetone vapor in [...]

Ceramic foams directly-coated with flame-made V2O5/TiO2

Schimmoeller B., Schulz H., Pratsinis S.E., Bareiss A., Reitzmann A., Kraushaar-Czanetzki B., Swiss Federal Institute of Technology (ETH Zürich ), CH

Flame-made airborne V2O5/TiO2 nanoparticles were deposited directly onto mullite foam supports making ready-to-use catalysts for the o-xylene conversion to phthalic anhydride. These particles containing 10 wt.% V2O5 were made by combustion of liquid precursor sprays [...]

Synthesis and characterisation of flame-sprayed superparamagnetic bare and silica-coated maghemite nanoparticles

Teoh W.Y., Li D., Selomulya C., Woodward R., Amal R., Monash University, AU

Magnetic nanoparticles are a much sought-after entity with direct applications in bioseparation, magnetic resonance imaging (MRI), drug delivery and cancer therapy. gamma-Fe2O3 and SiO2/ gamma-Fe2O3 nanoparticles of different sizes (dBET = 5-50 nm) were synthesised [...]