Formation and In Situ Sizing of -Fe₂O₃ Nanoparticles in a Microwave Flow Reactor

Authors: C. Janzen; H. Wiggers; J. Knipping; P. Roth

Source: Journal of Nanoscience and Nanotechnology, Volume 1, Number 2, June 2001 , pp. 221-225(5)

Publisher: American Scientific Publishers

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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.

Keywords: GAMMA-FE2O3 NANOPARTICLES; PLASMA REACTOR; PARTICLE MASS SPECTROMETRY; IN SITU PROCESS CONTROL

Document Type: Research article

DOI: http://dx.doi.org/10.1166/jnn.2001.032

Affiliations: 1: Institut für Verbrennung und Gasdynamik, Gerhard-Mercator-Universität Duisburg, 47048 Duisburg, Germany

Publication date: 2001-06-01

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Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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