Formation and In Situ Sizing of -Fe2O3 Nanoparticles in a Microwave Flow Reactor
Abstract:Nanocrystalline -Fe2O3 particles were produced in a microwave flow reactor. The reaction of iron pentacarbonyl [Fe(CO)5] with the plasma gases Ar/O2 to form nanosized particles was followed by in situ particle mass spectrometry. The particle mass spectrometer combines a nonintrusive sampling technique with a calibration-free mass determination. The influence of process parameters like microwave power, precursor concentration, and pressure on the particle size was studied. The results reveal a mean particle diameter in the range of 4–5 nm with a slight dependence on the process parameter. The geometric standard deviation of the measured size distribution was always between 1.1 and 1.2.
Document Type: Research Article
Affiliations: Institut für Verbrennung und Gasdynamik, Gerhard-Mercator-Universität Duisburg, 47048 Duisburg, Germany
Publication date: June 1, 2001
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