4.7 Article

Tetrabutylphosphonium ions as a new swelling/delamination agent for layered compounds

Journal

CHEMICAL COMMUNICATIONS
Volume 50, Issue 69, Pages 9977-9980

Publisher

ROYAL SOC CHEMISTRY
DOI: 10.1039/c4cc03736g

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Funding

  1. World Premier International Center Initiative (WPI Initiative) on Materials Nanoarchitectonics, MEXT, Japan
  2. CREST of the Japan Science and Technology Agency (JST)

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The swelling and exfoliation behavior of protonated layered oxides using an organo-phosphonium base, tetrabutylphosphonium hydroxide (TBPOH), was examined for the first time. The action of the aqueous solution induced massive interlayer expansion up to similar to 100-fold. The swollen crystals were immediately broken and completely exfoliated into unilamellar nanosheets in 1-2 h by shaking.

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