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

被引：104

作者：

Naik, SP

Chiang, AST ^{[1
]}

Thompson, RW

Huang, FC

机构：

[1] Natl Cent Univ, Dept Chem & Mat Engn, Chungli 320, Taiwan

[2] Natl Cent Univ, Grad Inst Environm Engn, Chungli 320, Taiwan

[3] Worcester Polytech Inst, Dept Chem Engn, Worcester, MA 01609 USA

来源：

CHEMISTRY OF MATERIALS | 2003年 / 15卷 / 03期

关键词：

D O I：

10.1021/cm020786v

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

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 approximate to10-20 nm with a BET surface area of 440-470 m(2)/g and an external surface area > 112 m(2)/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.

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页码：787 / 792

页数：6

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