摘要
A simple approach is reported for the preparation of hollow spheres with a 10-20-nm-thick shell of silicalite-1 nanocrystals. The nanocrystals were produced by the steaming of silicalite-1 nanoprecursors (NPs), collected with the help of surfactant from a clear synthesis solution immediately following the induction period. The nanocrystals produced were ≈10-20 nm with a BET surface area of 440-470 m2/g and an external surface area > 112 m2/g. A water adsorption isotherm confirmed that the nanocrystals were hydrophobic in nature. These nanocrystals self-assembled into hollow spheres of 100-300-nm diameter when ultrasonicated in ammoniac ethanol.
原文 | ???core.languages.en_GB??? |
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頁(從 - 到) | 787-792 |
頁數 | 6 |
期刊 | Chemistry of Materials |
卷 | 15 |
發行號 | 3 |
DOIs | |
出版狀態 | 已出版 - 11 2月 2003 |