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Issue 10, 1999
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Sol–gel synthesis of monolithic tin-doped silica glass


The preparation of Sn-doped SiO 2 glasses with different Sn contents (Sn/(SiO 2 + SnO 2 ) ratio 0.01 to 10.0% w/w) was performed by two sol–gel routes. The first route (method A) used tin(IV) tert-butoxide as the tin precursor and in the presence of acetylacetone it resulted in transparent glasses with a maximum tin content of 0.1%. The precursor in the second route (method B) was dibutyltin diacetate; this was more efficient and transparent glasses of up to 1% tin content were obtained. As electron paramagnetic resonance can identify paramagnetic E′ Sn centres, defects that form when silica glass is subjected to X-ray irradiation, we assessed the tin centres that substituted silicon in the silica network.At higher tin contents (Sn ≥ 3%), method B gave crystalline nanosized particles of SnO 2 (6–10 nm) dispersed throughout the silica matrix.

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Supplementary files

Article type: Paper
DOI: 10.1039/A904415I
Citation: J. Mater. Chem., 1999,9, 2653-2658
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    Sol–gel synthesis of monolithic tin-doped silica glass

    N. Chiodini, F. Morazzoni, A. Paleari, R. Scotti and G. Spinolo, J. Mater. Chem., 1999, 9, 2653
    DOI: 10.1039/A904415I

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