Highly Efficient Surface Modification of Layered Perovskite Nanosheets with a Phosphorus Coupling Reagent Making Use of Microchannels

Takeshi Sugaya, Régis Guégan, Naokazu Idota, Takehiko Tsukahara, Yoshiyuki Sugahara

Research output: Contribution to journalArticlepeer-review

Abstract

Surface modification of niobate nanosheets in a double-Y-type microchannel was achieved for the first time using parallel flows of an aqueous dispersion of nanosheets derived from ion-exchangeable layered perovskite via delamination with a tetrabutylammonium hydroxide aqueous solution and a cyclohexane solution of oleyl phosphate. The surface modification was essentially completed within 4.6 s, and spectroscopic characterization (IR, solid-state 13C and 31P NMR) demonstrated the successful surface modification. The surface modification using a biphasic system in a vial using the same liquids required more than 4 h, indicating the extremely high efficiency of surface modification in the microchannel.

Original languageEnglish
Pages (from-to)7252-7258
Number of pages7
JournalLangmuir
Volume36
Issue number26
DOIs
Publication statusPublished - 2020 Jul 7

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Surfaces and Interfaces
  • Spectroscopy
  • Electrochemistry

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