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 °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 Ω cm) for a mesoporous ATO material.
Original language | English (US) |
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Pages (from-to) | 13232-13240 |
Number of pages | 9 |
Journal | Journal of Materials Chemistry |
Volume | 21 |
Issue number | 35 |
DOIs | |
State | Published - Sep 21 2011 |
ASJC Scopus subject areas
- General Chemistry
- Materials Chemistry