Schulz C. – 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. [...]

Continuous synthesis of highly-specific silicon nanopowder on the pilot-plant scale

Hülser T., Schnurre S.M., Schulz C., Wiggers H., Institute of Energy and Environmental Technology (IUTA), DE

In this work we present the formation process of crystalline and amorphous nanostructured silicon made from a continuously operating hot-wall reactor synthesis process. In this reactor, silicon particles are synthesized at variable operating conditions varying [...]

Optical properties of silicon nanoparticles: Influence of etching, surface oxidation and surface functionalization

Gupta A., Kluge S., Schulz C., Wiggers H., Universität Duisburg-Essen, DE

In this study, we investigated the properties of Si-NPs after surface etching, surface re-oxidation and surface functionalization processes. Surface etching of as-synthesized Si-NPs with hydrofluoric acid causes a blue shift compared to their initial emission [...]

Gas phase synthesis of silica nanoparticles in a hybrid microwave-plasma hot-wall reactor

Abdali A., Moritz B., Wiggers H., Schulz C., University of Duisburg-Essen, DE

A microwave plasma reactor was constructed for gas phase synthesis of silica nanoparticles from tetraethoxysilane and a subsequent hot-wall furnace was used to enable for different temperature/time profiles. This combination has enabled us to investigate [...]

Gas-phase synthesis of highly-specific nanoparticles on the pilot-plant scale

Huelser T., Schnurre S.M., Schulz C., Wiggers H., Institute of Energy and Environmental Technology, DE

Highly-specific nanoparticles from the gas-phase provide promising properties for a large variety of applications as the size dependence of their properties allows to tailor materials for specific applications. Industrial nanoparticle production, however, is covered by [...]