Formation of silicalite-1 hollow spheres by the self-assembly of nanocrystals

S. P. Naik, A. S.T. Chiang, R. W. Thompson, F. C. Huang

Research output: Contribution to journalArticlepeer-review

99 Scopus citations

Abstract

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.

Original languageEnglish
Pages (from-to)787-792
Number of pages6
JournalChemistry of Materials
Volume15
Issue number3
DOIs
StatePublished - 11 Feb 2003

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