4.6 Article

Mixed-valent titanium tellurium oxides, Ti1-xTexTe3O8+x (x=0, 0.1, and 0.12): Hydrothermal synthesis, structure, and characterization

期刊

JOURNAL OF SOLID STATE CHEMISTRY
卷 297, 期 -, 页码 -

出版社

ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jssc.2021.122024

关键词

Mixed-valent titanium tellurium oxides; Hydrothermal reaction; Structural characterization

资金

  1. National Research Foundation of Korea (NRF)
  2. Korea government (Ministry of Science and ICT (MSIT)) [2017M2A8A5014754]

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Novel mixed-valent titanium tellurium oxides were synthesized and their crystal structures were confirmed using single-crystal X-ray diffraction. Detailed characterizations of the materials, including Infrared, UV-visible diffuse reflectance, were performed.
Novel mixed-valent titanium tellurium oxides, Ti1-xTexTe3O8+x (compound A, B, and C for x = 0, 0.1, and 0.12) were synthesized from TiOSO4 center dot xH(2)SO(4)center dot xH(2)O, TeO2, and H3BO3 using hydrothermal reaction conditions. The crystal structures of the materials were confirmed and refined using single-crystal X-ray diffraction. The compounds have three-dimensional framework structures consisting of TiO6 or Ti/TeO6 octahedra and asymmetric TeO4 polyhedral groups. The cell parameter of compound A, B, and C increased with the increase in the Ti - O bond distance in the TiO6 octahedron and is attributed to the increase in the Te6+ cation doping level. Detailed characterizations of the prepared materials, including Infrared, UV-visible diffuse reflectance, Raman spectra, thermogravimetric analyses, out-of-center distortion, and dipole moment calculations were performed.

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