Journal
JOURNAL OF MATERIALS CHEMISTRY
Volume 21, Issue 35, Pages 13232-13240Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c1jm12362a
Keywords
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Funding
- U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences [DE-SC0001016]
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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 degrees 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 m(2) 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 Omega cm) for a mesoporous ATO material.
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