Pore Morphology and Interconnectivity in a Mesoporous/Macroporous Polyhedral Silica Foam Material
- 26 March 2008
- journal article
- Published by American Chemical Society (ACS) in Langmuir
- Vol. 24 (9), 4827-4832
- https://doi.org/10.1021/la702318y
Abstract
The pore system of a highly swollen, block-copolymer-templated, polyhedral silica foam material is investigated by a combination of transmission electron microscopy, nitrogen sorption, and NMR cryoporometry. The adsorption−desorption hysteresis and melting−freezing hysteresis data recorded by the respective methods provide pore volume and access channel sizes that virtually coincide for the two used methods. This provides a consistent picture where polyhedral foam cells of 60−70 nm diameter are interconnected by cylindrical access channels with several characteristic sizes for the latter.Keywords
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