title: Tetrabutylphosphonium ions as a new swelling/delamination agent for layered compounds.
abstract: 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 ~100-fold. The swollen crystals were immediately broken and completely exfoliated into unilamellar nanosheets in 1-2 h by shaking.
authors.affiliation: International Center for Materials Nanoarchitectonics, National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan. SASAKI.Takayoshi@nims.go.jp.
authors.forename: Fengxia
authors.initials: F
authors.lastname: Geng
authors.forename: Renzhi
authors.initials: R
authors.lastname: Ma
authors.forename: Yusuke
authors.initials: Y
authors.lastname: Yamauchi
authors.forename: Takayoshi
authors.initials: T
authors.lastname: Sasaki