Structure of Sol-Gel-Derived Sodium Dititanate Glass |
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| Authors: | Hiroshi Harada Kanichi Kamiya Hiroyuki Nasu Jun Matsuoka |
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| Affiliation: | (1) Department of Chemistry for Materials, Faculty of Engineering, Mie University, Kamihama-cho, Tsu-shi, Mie-ken, 514, Japan;(2) Department of Material Science, Faculty of Engineering, University of Shiga Prefecture, Hassaka 2500, Hikone, Shiga, Japan |
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| Abstract: | The sodium dititanate, Na2O·2TiO2 glass was prepared by the sol-gel method. The structure of the glass, especially local environment of Ti4+ ions was examined using X-ray diffraction and X-ray absorption fine structure (XAFS) analyses, and was compared with that of the melt-derived glass with the same composition. It was found that Ti4+ ions are rather in five-fold coordination state, forming TiO5 pyramids with one doubly bonded Ti=O in the gel-glass, while they were in lower coordination state or four-fold coordination in the melt-derived glass. |
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| Keywords: | sodium ditatanate glass coordination of Ti structure of glass |
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