Adsorption isotherm of water vapor and its large hysteresis on highly ordered mesoporous silica

Shinji Inagaki, Aki Fukushima, Kazuo Kuroda, Kazuyuki Kuroda

Research output: Contribution to journalArticle

77 Citations (Scopus)

Abstract

The first and second adsorption-desorption isotherms of water vapor on a new mesoporous material derived from kanemite have been measured. The isotherms show unusual type V isotherms and large hysteresis. The type V isotherms, which have never been observed for the other adsorbates, suggest that the mesoporous material has a hydrophobic surface, although the hydrophobicity decreased after treatment with water vapor because of rehydration of the surface. The significantly large hysteresis could be explained by the difference in contact angle between adsorption and desorption.

Original languageEnglish
Pages (from-to)623-624
Number of pages2
JournalJournal of Colloid And Interface Science
Volume180
Issue number2
DOIs
Publication statusPublished - 1996 Jun 25

Keywords

  • hydrophobicity
  • hysteresis
  • mesoporous material
  • water vapor

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Surfaces, Coatings and Films
  • Colloid and Surface Chemistry

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