One-pot synthesis of highly mesoporous antimony-doped tin oxide from interpenetrating inorganic/organic networks

Authors: Volosin, A.M., Sharma, S., Traverse, C., Newman, N., and Seo, D-K.
Title: One-pot synthesis of highly mesoporous antimony-doped tin oxide from interpenetrating inorganic/organic networks
Source: Journal of Materials Chemistry
Year: 2011
Volume: 21
Pages: 13232-13240

ABSTRACT:

Highly mesoporous antimony-doped tin oxide (ATO) materials with three-dimensionally connected textural pores were prepared by a convenient one-pot process by creating, drying and calcining hydrous ATO and resorcinol-formaldehyde composite gels. The synthesis is designed to form a hydrous ATO gel structure first at room temperature and upon subsequent heating at 70 [degree]C the inorganic gel network catalyzes the full polymerization of resorcinol and formaldehyde. The resulting polymer network interpenetrates the inorganic gel network and serves as a hard template during drying and calcination. The final products show a good crystallinity and have high surface areas up to 100 m2 g-1 and high porosities up to 69%. The average pore sizes range from 7 to 33 nm, controlled mainly by varying the amount of the polymer component in the composite gels. The materials exhibit remarkably low resistivities (>0.14 [capital Omega] cm) for a mesoporous ATO material.


Date of online publication: Mon, 2011-08-08
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