Journal
MATERIALS CHARACTERIZATION
Volume 87, Issue -, Pages 166-171Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.matchar.2013.11.010
Keywords
Computer simulations; Transmission electron microscopy; Electron diffraction; Titanate nanotubes; X-ray powder diffraction; Debye formula
Categories
Funding
- Grant Agency of the Czech Republic [P108/11/1539]
- Grant Agency of Charles University [470413]
- Swedish Research Council (VR)
- Swedish Governmental Agency for Innovation Systems (VINNOVA)
- Goran Gustafsson Foundation for Natural Sciences and Medical Research
- Carl-Trygger Foundation
- Knut and Alice Wallenberg Foundation
- program of the Czech Research Infrastructures [LM2011025]
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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 TiO2 powder. The structure is identified by powder X-ray diffraction as the one based on the structure of H2Ti2O5 center dot H2O 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. (C) 2013 Elsevier Inc. All rights reserved.
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