Preparation of Porous Silicon from Porous Silica Glass via Magnesiothermic Reduction

We applied magnesiothermic reduction for porous silica glass, which was prepared from sodium borosilicate glass. The powdered porous silica glass was reduced to silicon and magnesium silicide at temperatures higher than 600 °C. The silicon was isolated by the hydrochloric acid treatment and the subs...

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Bibliographic Details
Published in:Chemistry letters 2016-10, Vol.45 (10), p.1171-1173
Main Authors: Uehira, Kenta, Okada, Arifumi, Shiomi, Haruhisa, Wakasugi, Takashi, Kadono, Kohei
Format: Article
Language:English
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Summary:We applied magnesiothermic reduction for porous silica glass, which was prepared from sodium borosilicate glass. The powdered porous silica glass was reduced to silicon and magnesium silicide at temperatures higher than 600 °C. The silicon was isolated by the hydrochloric acid treatment and the subsequent hydrofluoric acid treatment for the reduction products. The SEM observation revealed that the prepared silicon had a porous structure. The pore size distribution measured with a porosimeter was similar to that of the stating porous silica glass in the region less than several tens nanometers.
ISSN:0366-7022
1348-0715
DOI:10.1246/cl.160544