Formation and growth mechanisms of imogolite-like aluminogermanate nanotubes

Levard Clément, Rose Jérôme, Thill André, Masion Armand, Doelsch Emmanuel, Maillet Perrine, Spalla Olivier, Olivi Luca, Cognigni A., Ziarelli Fabio, Bottero Jean Yves. 2010. Formation and growth mechanisms of imogolite-like aluminogermanate nanotubes. Chemistry of Materials, 22 (8) : 2466-2473.

Quartile : Outlier, Sujet : MATERIALS SCIENCE, MULTIDISCIPLINARY / Quartile : Q1, Sujet : CHEMISTRY, PHYSICAL

Résumé : 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.

Mots-clés Agrovoc : structure chimique

Mots-clés complémentaires : Nanotube

Classification Agris : 000 - Autres thèmes
Q70 - Traitement des déchets agricoles

Champ stratégique Cirad : Hors axes (2005-2013)

Auteurs et affiliations

• Levard Clément, CNRS (FRA)
• Rose Jérôme, CNRS (FRA)
• Thill André, CEA (FRA)
• Masion Armand, CNRS (FRA)
• Doelsch Emmanuel, CIRAD-PERSYST-UPR Recyclage et risque (FRA) ORCID: 0000-0002-7478-4296
• Maillet Perrine, CEA (FRA)
• Spalla Olivier, CEA (FRA)
• Olivi Luca, ELETTRA (ITA)
• Cognigni A., ELETTRA (ITA)
• Ziarelli Fabio, CNRS (FRA)
• Bottero Jean Yves, CNRS (FRA)

Source : Cirad - Agritrop (https://agritrop.cirad.fr/554537/)

Métriques

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