Mechanosynthesis of nanocrystalline fayalite, Fe2SiO4

Vladimir Šepelák; Maxym Myndyk; Martin Fabián; Klebson L. Da Silva; Armin Feldhoff; Dirk Menzel; Mohammad Ghafari; Horst Hahn; Paul Heitjans; Klaus D. Becker

doi:10.1039/C2CC36370D

Mechanosynthesis of nanocrystalline fayalite, Fe₂SiO₄†

Vladimir Šepelák,‡*^ab Maxym Myndyk,^c Martin Fabián,^d Klebson L. Da Silva,^e Armin Feldhoff,^bf Dirk Menzel,^g Mohammad Ghafari,^a Horst Hahn,^a Paul Heitjans^bf and Klaus D. Becker^bh

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^a Institute of Nanotechnology, Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, D-76344 Eggenstein-Leopoldshafen, Germany
E-mail: vladimir.sepelak@kit.edu
Fax: +49-721-60826368
Tel: +49-721-60828929

^b Center for Solid State Chemistry and New Materials, Leibniz University Hannover, Callinstr. 3-3a, D-30167 Hannover, Germany

^c Department of Inorganic Chemistry, Dresden University of Technology, Mommsenstrasse 6, D-01062 Dresden, Germany

^d Institute of Geotechnics, Slovak Academy of Sciences, Watsonova 45, SK-04353 Košice, Slovakia

^e Department of Physics, State University of Maringá, Av. Colombo 5790, 87020-900 Maringá, Brazil

^f Institute of Physical Chemistry and Electrochemistry, Leibniz University Hannover, Callinstr. 3-3a, D-30167 Hannover, Germany

^g Institute of Condensed Matter Physics, Braunschweig University of Technology, Mendelssohnstrasse 3, D-38106 Braunschweig, Germany

^h Institute of Physical and Theoretical Chemistry, Braunschweig University of Technology, Hans-Sommer-Str. 10, D-38106 Braunschweig, Germany

Abstract

Nanostructured fayalite (α-Fe₂SiO₄) with a large volume fraction of interfaces is synthesized for the first time via single-step mechanosynthesis, starting from a 2α-Fe₂O₃ + 2Fe + 3SiO₂ mixture. The nonequilibrium state of the as-prepared silicate is characterized by the presence of deformed polyhedra in the interface/surface regions of nanoparticles.

This article is part of the themed collection: Mechanochemistry: fundamentals and applications in synthesis

Chemical Communications

Mechanosynthesis of nanocrystalline fayalite, Fe₂SiO₄†

Abstract

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Mechanosynthesis of nanocrystalline fayalite, Fe₂SiO₄

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