Synthesis of SiO2 Nanotubes and Their Application as Nanoscale Reactors

详细信息    查看全文

• 作者：Hitoshi Ogihara ; Sakae Takenaka ; Ichiro Yamanaka ; Eishi Tanabe ; Akira Genseki ; and Kiyoshi Otsuka
• 刊名：Chemistry of Materials
• 出版年：2006
• 出版时间：February 21, 2006
• 年：2006
• 卷：18
• 期：4
• 页码：996 - 1000
• 全文大小：537K
• 年卷期：v.18,no.4(February 21, 2006)
• ISSN：1520-5002

文摘

SiO₂ nanotubes could be synthesized by hydrolysis of tetraethyl orthosilicate (TEOS) on the surfaceof carbon nanofibers (CNF), followed by removal of CNF. In the synthesis of SiO₂ nanotubes, CNFacted as templates. The wall thickness and the internal diameter of SiO₂ nanotubes were changed byhydrolysis time of TEOS and the diameter of CNF templates, respectively. The catalysts for the hydrolysisof TEOS were functional groups on the surface of CNF. The methane decomposition was carried outover SiO₂ nanotubes containing Ni metal particles, so that carbon nanotubes with uniform diameter (ca.8 nm) were formed at the inside of SiO₂ nanotubes. This result strongly indicated that SiO₂ nanotubesworked as nanoscale reactors.