[en] Understanding how solids form is a challenging task, and few strategies allow for elucidation of reaction pathways that are useful for designing the synthesis of solids. Here, we report a powerful solution-mediated approach for formation of nanocrystals of the thermoelectrically promising FeSb2 that uses activated metal nanoparticles as precursors. The small particle size of the reactants ensures minimum diffusion paths, low activation barriers, and low reaction temperatures, thereby eliminating solid-solid diffusion as the rate-limiting step in conventional bulk-scale solid-state synthesis. A time- and temperature-dependent study of formation of nanoparticular FeSb2 by X-ray powder diffraction and iron-57 Mossbauer spectroscopy showed the incipient format on of the binary phase in the temperature range of 200-250 degrees C.
Disciplines :
Chemistry
Author, co-author :
Birkel, Christina S.
Kieslich, Gregor
Bessas, Dimitrios
Caudio, Tania
Branscheid, Robert
Kolb, Ute
Martin, Panthoefer
Hermann, Raphaël ; Université de Liège - ULiège > Département de chimie (sciences) > Département de chimie (sciences)
Tremel, Wolfgang
Language :
English
Title :
Wet Chemical Synthesis and a Combined X-ray and Mossbauer Study of the Formation of FeSb2 Nanoparticles
Publication date :
2011
Journal title :
Inorganic Chemistry
ISSN :
0020-1669
eISSN :
1520-510X
Publisher :
American Chemical Society, Washington, United States - District of Columbia
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