Author
Listed:
- Fengxia Geng
(International Center for Materials Nanoarchitectonics, National Institute for Materials Science)
- Renzhi Ma
(International Center for Materials Nanoarchitectonics, National Institute for Materials Science)
- Akira Nakamura
(International Center for Materials Nanoarchitectonics, National Institute for Materials Science)
- Kosho Akatsuka
(International Center for Materials Nanoarchitectonics, National Institute for Materials Science)
- Yasuo Ebina
(International Center for Materials Nanoarchitectonics, National Institute for Materials Science)
- Yusuke Yamauchi
(International Center for Materials Nanoarchitectonics, National Institute for Materials Science
CREST & PRESTO, Japan Science Technology Agency, 4-1-8 Honcho)
- Nobuyoshi Miyamoto
(Environment and Materials Science, Fukuoka Institute of Technology, Wajiro-Higashi, Higashi-ku, Fukuoka 811-0295, Japan)
- Yoshitaka Tateyama
(International Center for Materials Nanoarchitectonics, National Institute for Materials Science
CREST & PRESTO, Japan Science Technology Agency, 4-1-8 Honcho)
- Takayoshi Sasaki
(International Center for Materials Nanoarchitectonics, National Institute for Materials Science
CREST & PRESTO, Japan Science Technology Agency, 4-1-8 Honcho)
Abstract
Cells can swell or shrink in certain solutions; however, no equivalent activity has been observed in inorganic materials. Although lamellar materials exhibit increased volume with increase in the lamellar period, the interlamellar expansion is usually limited to a few nanometres, with a simultaneous partial or complete exfoliation into individual atomic layers. Here we demonstrate a large monolithic crystalline swelling of layered materials. The gallery spacing can be instantly increased ~100-fold in one direction to ~90 nm, with the neighbouring layers separated primarily by H2O. The layers remain strongly held without peeling or translational shifts, maintaining a nearly perfect three-dimensional lattice structure of >3,000 layers. First-principle calculations yield a long-range directional structuring of the H2O molecules that may help to stabilize the highly swollen structure. The crystals can also instantaneously shrink back to their original sizes. These findings provide a benchmark for understanding the exfoliating layered materials.
Suggested Citation
Fengxia Geng & Renzhi Ma & Akira Nakamura & Kosho Akatsuka & Yasuo Ebina & Yusuke Yamauchi & Nobuyoshi Miyamoto & Yoshitaka Tateyama & Takayoshi Sasaki, 2013.
"Unusually stable ~100-fold reversible and instantaneous swelling of inorganic layered materials,"
Nature Communications, Nature, vol. 4(1), pages 1-7, June.
Handle:
RePEc:nat:natcom:v:4:y:2013:i:1:d:10.1038_ncomms2641
DOI: 10.1038/ncomms2641
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