A short solid-state synthesis leading to titanate compounds with porous structure and nanosheet morphology

László Ko'rösi, Szilvia Papp, Edit Csapó, Vera Meynen, Pegie Cool, Imre Dékány

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

A novel method was developed for the synthesis of titanate nanosheets with high surface area. A solid-state mixture of NaOH and TiO2 was reacted at 600 °C for several minutes. The aqueous dispersion of the resulting melt was aged at room temperature for periods up to 14 days. After hydrochloric acid treatment and washing procedures, the reaction product was characterized by X-ray diffraction, Raman spectroscopy, N2-sorption and small-angle X-ray scattering measurements. The titanate compound not subjected to the aging process was amorphous and possessed a microporous framework, while the aged samples displayed nanosheet morphology and high specific surface area (396-509 m2 g-1). It was revealed that the very short heat treatment is of crucial importance for the titania-titanate phase transformation, while the aging process is needed for the morphological evolution of the titanate samples. The effects of the aging time on the structure and the morphology are discussed.

Original languageEnglish
Pages (from-to)53-58
Number of pages6
JournalMicroporous and Mesoporous Materials
Volume147
Issue number1
DOIs
Publication statusPublished - Jan 1 2012

Keywords

  • HTiO·HO
  • Nanosheet morphology
  • Porosity
  • Surface area
  • Titanate

ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials

Fingerprint Dive into the research topics of 'A short solid-state synthesis leading to titanate compounds with porous structure and nanosheet morphology'. Together they form a unique fingerprint.

  • Cite this