Pore Morphology and Interconnectivity in a Mesoporous/Macroporous Polyhedral Silica Foam Material
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- 作者：Dulce Vargas-Florencia ; Istvá ; n Furó ; Robert W. Corkery
- 刊名：Langmuir
- 出版年：2008
- 出版时间：May 6, 2008
- 年：2008
- 卷：24
- 期：9
- 页码：4827 - 4832
- 全文大小：181K
- 年卷期：v.24,no.9(May 6, 2008)
- ISSN：1520-5827
文摘
The pore system of a highly swollen, block-copolymer-templated, polyhedral silica foam material is investigatedby 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 volumeand access channel sizes that virtually coincide for the two used methods. This provides a consistent picture wherepolyhedral foam cells of 60-70 nm diameter are interconnected by cylindrical access channels with several characteristicsizes for the latter.