Formation and characterization of tin oxide aerogel derived from sol-gel process based on Tetra(n-butoxy)tin(IV) |
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Authors: | Ruian Huang Lisong Hou Qitao Zhao |
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Affiliation: | a Shanghai Institute of Optics and fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China b Department of Physics, Tongji University, Shanghai 200092, China c Department of Material Science and Engineering, Kunming University of Science and Technology, Kunming 650093, China |
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Abstract: | Transparent and translucent SnO2 aerogels with high specific surface area (>300 m2/g) have been prepared by sol-gel process using tetra(n-butoxy)tin(IV) as a starting compound, and supercritical drying technique for solvent extraction. Light scattering measurements reveal that the polymeric cluster size distribution in sol system is gradually broadened during sol-gel transition. SEM images show that the aerogels are made up of the cottonlike oxide agglomerates with a large number of pores. TEM images show that these aerogels seem to be self-similar at different magnifications. Their pore size distribution is pretty wide ranging from mesopore to macropore especially for that of translucent aerogel. |
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Keywords: | A120 S310 T240 |
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