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Title: Study of titanate nanotubes by X-ray and electron diffraction and electron microscopy

The structure of titanate nanotubes (Ti-NTs) was studied by a combination of powder X-ray diffraction (PXRD), electron diffraction and high resolution transmission electron microscopy (HRTEM). Ti-NTs are prepared by hydrothermal treatment of TiO{sub 2} powder. The structure is identified by powder X-ray diffraction as the one based on the structure of H{sub 2}Ti{sub 2}O{sub 5}·H{sub 2}O phase. The same structure is obtained by projected potential from HRTEM through-focus image series. The structure is verified by simulated PXRD pattern with the aid of the Debye formula. The validity of the model is tested by computing Fourier transformation of a single nanotube which is proportional to measured electron diffraction intensities. A good agreement of this calculation with measured precession electron diffraction data is achieved. - Highlights: • Titanate nanotubes were prepared by hydrothermal method. • X-ray powder diffraction indicated their structure based on that of H{sub 2}Ti{sub 2}O{sub 5}·H{sub 2}O. • Structural model was created with the aid of high-resolution electron microscopy. • The model was verified with electron diffraction data. • X-ray powder diffraction pattern was calculated with the aid of the Debye formula.
Authors:
 [1] ;  [2] ;  [3] ;  [4] ;  [5] ;  [1] ;  [3] ;  [4] ;  [1]
  1. Charles University, Faculty of Mathematics and Physics, Dept. of Condensed Matter Physics, Prague (Czech Republic)
  2. Institute of Macromolecular Chemistry, Academy of Sciences of the Czech Republic, Prague (Czech Republic)
  3. Berzelii Center EXSELENT on Porous Materials, Stockholm University, SE-106 91 Stockholm (Sweden)
  4. (Sweden)
  5. Dept. of Materials and Environmental Chemistry, Stockholm University, SE-106 91 Stockholm (Sweden)
Publication Date:
OSTI Identifier:
22288729
Resource Type:
Journal Article
Resource Relation:
Journal Name: Materials Characterization; Journal Volume: 87; Other Information: Copyright (c) 2013 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; COMPUTERIZED SIMULATION; ELECTRON DIFFRACTION; HYDROTHERMAL SYNTHESIS; NANOTUBES; TITANIUM OXIDES; TRANSMISSION ELECTRON MICROSCOPY; X RADIATION; X-RAY DIFFRACTION