RADIOISOTOPES
Online ISSN : 1884-4111
Print ISSN : 0033-8303
ISSN-L : 0033-8303
Article
Study of Decomposition Mechanism for Inorganic-Layered Saponite Nanoparticle
Kazuomi NUMATAKiminori SATOKoichiro FUJIMOTOKazuhiko FUJIWARA
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JOURNALS OPEN ACCESS

2014 Volume 63 Issue 8 Pages 389-397

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Abstract

The decomposition mechanism of inorganic-layered saponite nanoparticle was studied on a molecular scale based on the results of X-ray diffraction(XRD), field emission scanning electron microscopy(FE-SEM), Fourier transform infra-red spectroscopy(FT-IR), thermogravimetry and differential thermal analysis(TG-DTA), and positronium(Ps) lifetime spectrpscopy. It is found that decomposition is caused by the refinement of nanosheet due to vertical cutting as well as in-plane shear separating. These processes significantly reduce existing open spaces, but yield the metastable open spaces created by highly disordered nanosheets.

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© 2014 by Japan Radioisotope Association
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