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Research Letters in Nanotechnology
Volume 2008, Article ID 516478, 4 pages
Research Letter

Iron Oxide Doped Alumina-Zirconia Nanoparticle Synthesis by Liquid Flame Spray from Metal Organic Precursors

1Department of Materials Science, Tampere University of Technology, P.O. Box 589, 33101 Tampere, Finland
2Aerosol Physics Laboratory, Department of Physics, Tampere University of Technology, P.O. Box. 692, 33101 Tampere, Finland
3Laboratory for Physical Chemistry, Åbo Akademi University, 20500 Åbo, Finland

Received 11 March 2008; Accepted 23 April 2008

Academic Editor: Chuan-Jian Zhong

Copyright © 2008 Juha-Pekka Nikkanen et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


The liquid flame spray (LFS) method was used to make iron oxide doped alumina-zirconia nanoparticles. Nanoparticles were generated using a turbulent, high-temperature ( 𝑇 m a x 3 0 0 0  K) H 2 - O 2 flame. The precursors were aluminium-isopropoxide, zirconium- 𝑛 -propoxide, and ferrocene in xylene solution. The solution was atomized into micron-sized droplets by high velocity H 2 flow and introduced into the flame where nanoparticles were formed. The particle morphology, size, phase, and chemical composition were determined by TEM, XRD, XPS, and N 2 -adsorption measurements. The collected particulate material consists of micron-sized aggregates with nanosized primary particles. In both doped and undoped samples, tetragonal phase of zirconia was detected in room temperature while alumina was found to be noncrystalline. In the doped powder, Fe was oxidized to F e 2 O 3 . The primary particle size of collected sample was approximately from 6 nm to 40 nm. Doping was observed to increase the specific surface area of the powder from 39  m 2 /g to 47  m 2 /g.