New hierarchically porous titania monoliths for chromatographic separation media

George Hasegawa, Kei Morisato, Kazuyoshi Kanamori, Kazuki Nakanishi

Research output: Contribution to journalArticlepeer-review

24 Citations (Scopus)

Abstract

Separation media based on hierarchically porous titania (TiO2) monoliths for highperformance liquid chromatography (HPLC) have been successfully fabricated by the sol-gel process of titanium alkoxide in a mild condition utilizing a chelating agent and mineral salt. The as-gelled TiO 2 monoliths were subjected to a simple solvent exchange process from ethanol (EtOH) to H2O followed by drying and calcination. The resultant monolithic TiO2 columns consist of anatase crystallites with the typical specific surface area of more than 200m2/g. The resultant monolithic TiO2 column calcined at 200 and 400°C exhibited a good separation performance for organophosphates as well as for polar benzene derivatives in the normal-phase mode.

Original languageEnglish
Pages (from-to)3004-3010
Number of pages7
JournalJournal of Separation Science
Volume34
Issue number21
DOIs
Publication statusPublished - Nov 2011

All Science Journal Classification (ASJC) codes

  • Analytical Chemistry
  • Filtration and Separation

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