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Formation and characterization of tin oxide aerogel derived from sol-gel process based on tetra(n-butoxy)tin(IV)

机译:基于四(正丁氧基)锡(IV)的溶胶-凝胶法衍生的氧化锡气凝胶的形成与表征

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Transparent and translucent SnO2 aerogels with high specific surface area (>300m(2)/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. (C) 2004 Elsevier B.V. All rights reserved.
机译:以四(正丁氧基)锡(IV)为原料,采用超临界干燥技术通过溶胶-凝胶法制备了高比表面积(> 300m(2)/ g)的透明半透明SnO2气凝胶。 。光散射测量表明,在溶胶-凝胶转变过程中,溶胶体系中的聚合物簇尺寸分布逐渐加宽。 SEM图像显示气凝胶由棉状氧化物附聚物和大量的孔组成。 TEM图像显示,这些气凝胶在不同放大倍数下似乎是自相似的。它们的孔径分布范围很广,从中孔到大孔,尤其是对于半透明气凝胶而言。 (C)2004 Elsevier B.V.保留所有权利。

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