Journal of Porous Materials

, 17:69 | Cite as

Mesoporous characteristics of crystalline indium-titania synthesized by the sol-gel route

  • G. Rangel-Porras
  • E. Ramos-Ramírez
  • Leticia M. Torres-Guerra
Article

Abstract

Mesoporous nanocrystalline titanium dioxide with narrow pore size distribution was prepared by the sol-gel technique. During synthesis, the gels were doped with indium salt incorporation in the early gelation stage. The presence of indium had an evident influence on the phase transition of TiO2 and the nucleation process. Crystal sizes were estimated by X-ray diffraction (XRD). Mesoporous structures in indium-doped titania were maintained after heat treatment at 400 and 600 °C for 4 h, exhibiting significant thermal stability. The brookite phase was observed in samples that underwent phase transition. In this paper, we have studied the relationship between textural properties and phase transition, discussing the possible role of average crystal size.

Keywords

Indium Titanium dioxide Solid–solid transition Mesoporous characteristics Surface morphology 

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Copyright information

© Springer Science+Business Media, LLC 2009

Authors and Affiliations

  • G. Rangel-Porras
    • 1
  • E. Ramos-Ramírez
    • 1
  • Leticia M. Torres-Guerra
    • 2
  1. 1.Universidad de Guanajuato, Centro de Investigaciones en Química InorgánicaGuanajuatoMexico
  2. 2.Facultad de Ingeniería CivilUniversidad Autónoma de Nuevo LeónMonterreyMexico

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