Hydration-Induced Local Molecular Structures in Nano-Layered Clay Particles

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Title	Hydration-Induced Local Molecular Structures in Nano-Layered Clay Particles
Authors	Sato, K. Numata, K.
ORCID
Keywords	Smectite Clay mineral Positronium
Type	Article
Date of Issue	2013
URI	http://essuir.sumdu.edu.ua/handle/123456789/30938
Publisher	Сумський державний університет
License	Copyright not evaluated
Citation	K. Sato, K. Numata, J. Nano- Electron. Phys. 5 No 1, 01002 (2013)
Abstract	Positronium (Ps) annihilation spectroscopy and thermogravimetry and differential thermal analysis (TG-DTA) were conducted for synthetic smectite clay minerals to investigate local molecular structures induced by water adsorption and desorption. The TG curves indicate the weight loss of ~ 3.5 wt %, ~ 2.5 wt %, and ~ 2.0 wt % for saponite, hectorite, and stevensite due to dehydration, in accordance with DTA endothermic peaks around 332 K, 350 K, and 345 K. It is found based on the results of Ps lifetime spectroscopy that the presence of angstrom-scale open space is sensitively dependent on water adsorption and desorption in smectite clay minerals. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/30938
Appears in Collections:	Журнал нано- та електронної фізики (Journal of nano- and electronic physics)