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Facile preparation of hierarchically porous TiO monoliths

Journal of the American Ceramic Society, ISSN: 0002-7820, Vol: 93, Issue: 10, Page: 3110-3115
2010
  • 91
    Citations
  • 0
    Usage
  • 50
    Captures
  • 0
    Mentions
  • 0
    Social Media
Metric Options:   Counts1 Year3 Year

Metrics Details

  • Citations
    91
    • Citation Indexes
      91
  • Captures
    50

Article Description

Monolithic titania (TiO) with multiscale porous structures have been successfully prepared via the sol-gel route accompanied by phase separation utilizing a chelating agent and mineral salt. The TiO gels obtained possess well-defined macropores derived from spinodal decomposition and mesopores as interstices of anatase TiO nanocrystallites.Most of the chelating agent were removed by hydrolysis and subsequent decarbonation through the gradual solvent exchange from ethanol to water. The TiO particles comprising TiO gel skeletons spontaneously converted from amorphous to anatase through the solvent exchange process in a mild condition at 60°C. The present method of the fabrication of porous TiO monoliths is advantageous for widespread applications because the reaction occurs under an almost neutral condition and does not require a hydrothermal process, which was indispensable to strengthen the monolith in the method previously reported © 2010 The American Ceramic Society.

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