A hitherto unknown phase of sodium titanate, NaTi3O6(OH)·2H2O, was identified as the intermediate species in the synthesis of TiO2 nanorods. This new phase, prepared as nanorods, was investigated by electron diffraction, X-ray powder diffraction, thermogravimetric analysis and high-resolution transmission electron microscopy. The structure was determined ab initio using electron diffraction data collected by the recently developed automated diffraction tomography technique. NaTi3O6(OH)·2H2O crystallizes in the monoclinic space group C2/m. Corrugated layers of corner- and edge-sharing distorted TiO6 octahedra are intercalated with Na+ and water of crystallization. The nanorods are typically affected by pervasive defects, such as mutual layer shifts, that produce diffraction streaks along c*. In addition, edge dislocations were observed in HRTEM images. © 2011 International Union of Crystallography Printed in Singapore - all rights reserved.

Andrusenko, I., Mugnaioli, E., Gorelik, T.E., Koll, D., Panthofer, M., Tremel, W., et al. (2011). Structure analysis of titanate nanorods by automated electron diffraction tomography. ACTA CRYSTALLOGRAPHICA. SECTION B, STRUCTURAL SCIENCE, 67(3), 218-225 [10.1107/S0108768111014534].

Structure analysis of titanate nanorods by automated electron diffraction tomography

MUGNAIOLI, E.;
2011

Abstract

A hitherto unknown phase of sodium titanate, NaTi3O6(OH)·2H2O, was identified as the intermediate species in the synthesis of TiO2 nanorods. This new phase, prepared as nanorods, was investigated by electron diffraction, X-ray powder diffraction, thermogravimetric analysis and high-resolution transmission electron microscopy. The structure was determined ab initio using electron diffraction data collected by the recently developed automated diffraction tomography technique. NaTi3O6(OH)·2H2O crystallizes in the monoclinic space group C2/m. Corrugated layers of corner- and edge-sharing distorted TiO6 octahedra are intercalated with Na+ and water of crystallization. The nanorods are typically affected by pervasive defects, such as mutual layer shifts, that produce diffraction streaks along c*. In addition, edge dislocations were observed in HRTEM images. © 2011 International Union of Crystallography Printed in Singapore - all rights reserved.
Andrusenko, I., Mugnaioli, E., Gorelik, T.E., Koll, D., Panthofer, M., Tremel, W., et al. (2011). Structure analysis of titanate nanorods by automated electron diffraction tomography. ACTA CRYSTALLOGRAPHICA. SECTION B, STRUCTURAL SCIENCE, 67(3), 218-225 [10.1107/S0108768111014534].
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11365/841661
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo