Formation and growth mechanisms of imogolite-like aluminogermanate nanotubes

The growth mechanisms of imogolite-like aluminogermanate nanotubes have been examined at various stages of their formation. The accurate determination of the nucleation stage was examined using a combination of local- (XAS at the Ge-Kedge and 27AlNMR) and semilocal scale technique (in situ SAXS). For the first time, a model is proposed for the precursors of the nanotubular structure and consist in rooftile-shaped particles, up to 5 nm in size, with ca. 26% of Ge vacancies and varying curvatures. These precursors assemble to form short nanotubes/nanorings observed during the aging process. The final products are most probably obtained by an edge-edge assembly of these short nanotube segments.

Bibliographic Details

Main Authors:	Levard, Clément, Rose, Jérôme, Thill, André, Masion, Armand, Doelsch, Emmanuel, Maillet, Perrine, Spalla, Olivier, Olivi, Luca, Cognigni, A., Ziarelli, Fabio, Bottero, Jean Yves
Format:	article biblioteca
Language:	eng
Subjects:	000 - Autres thèmes, Q70 - Traitement des déchets agricoles, structure chimique, http://aims.fao.org/aos/agrovoc/c_15893,
Online Access:	http://agritrop.cirad.fr/554537/ http://agritrop.cirad.fr/554537/1/document_554537.pdf
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