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Spark Plasma Sintering Synthesis of Nanocrystalline Cobalt-Doped Titania

Manuela Stir 1Radu Nicula 1David Salamon 2Zhijian Shen 2

1. EMPA Materials Research and Technology (EMPA), Feuerwerkerstr. 39, Thun 3602, Switzerland
2. Department of Inorganic Chemistry, Svante Arrhenius väg 10, Stockholm SE-106 91, Sweden


TiO2-based nanomaterials doped with transition metals, eg. Fe, Co, Mn etc., play an important role in modern applications like photocatalysis, magnetism or nanomedicine. We report on the synthesis of amorphous Co-doped TiO2 xerogels by solution-chemistry methods and their nanocrystallization. The structural changes of the solgel-derived nanomaterials were investigated by in-situ high-temperature powder diffraction using synchrotron radiation and by differential scanning calorimetry. The densification of Co-doped titania nanopowders to full density nanocrystalline bulk solids by spark plasma sintering is described in detail.


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Presentation: Oral at E-MRS Fall Meeting 2008, Symposium I, by Manuela Stir
See On-line Journal of E-MRS Fall Meeting 2008

Submitted: 2008-05-19 21:12
Revised:   2009-06-07 00:48