Artificial Lamellar Mesostructures to WS2 Nanotubes
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- 作者：Yadong D. Li ; Xiaolin L. Li ; Rongrui R. He ; Jing Zhu ; and Zhaoxiang X. Deng
- 刊名：Journal of the American Chemical Society
- 出版年：2002
- 出版时间：February 20, 2002
- 年：2002
- 卷：124
- 期：7
- 页码：1411 - 1416
- 全文大小：972K
- 年卷期：v.124,no.7(February 20, 2002)
- ISSN：1520-5126
文摘
A direct pyrolysis method from artificial lamellar mesostructures to nanotubes was developedfor the synthesis of tungsten disulfide (WS2) nanotubes. In this process, a tungsten sulfide artificial lamellarmesostructure composite with intercalated cetyltrimethylammonium cations (WS-L) was prepared on thebasis of the recently developed template self-assembly of anionic tungstates (WS42-) and cationic surfactantmolecules (CTA+) in solution under appropriate conditions. After heating of this inorganic-surfactant lamellarcomposite material in an argon atmosphere to 850 
C, bulk quantities of uniform WS2 nanotubes withdiameters of 5-37.5 nm and lengths ranging from 0.2 to 5 
m were produced, which revealed a generalrolling mechanism of layered sheets for tubule formation. The observations of transmission electronmicroscopy are in good agreement with the proposed rolling mechanism.
C, bulk quantities of uniform WS2 nanotubes withdiameters of 5-37.5 nm and lengths ranging from 0.2 to 5 m were produced, which revealed a generalrolling mechanism of layered sheets for tubule formation. The observations of transmission electronmicroscopy are in good agreement with the proposed rolling mechanism.