Free-standing membranes from the chemical exfoliation of mesoporous amorphous titania thin film

Victor Malgras*, Yoshitaka Matsushita, Joel Henzie, Yoshiyuki Sugahara, Yusuke Yamauchi

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Thin films are typically bound to their substrate, limiting their integration on rough, porous, curved or chemically/thermally sensitive surfaces. Instead of employing tedious and expensive back-etching processes, specific chemical routes can enable the exfoliation of such thin structures. Herein, we demonstrate that an alkaline treatment can exfoliate a hybrid thin film comprising amorphous titania embedded in well-ordered block-copolymer micelles, which can be redeposited elsewhere. We provide sufficient evidence of the preservation of pore ordering and the importance of neutralizing the solution to spare the system from the redissolution of the titania species.

Original languageEnglish
Pages (from-to)7513-7516
Number of pages4
JournalChemical Communications
Volume57
Issue number61
DOIs
Publication statusPublished - 2021 Aug 7

ASJC Scopus subject areas

  • Catalysis
  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Chemistry(all)
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Materials Chemistry

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