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Dual-template Assisted Synthesis of Silica Nanotubes

Author(s): Qiulin Liao, Yexiang Wang, Yong Gao, Huaming Li.

Abstract:

Silica nanotubes were synthesized via sol-gel process using poly(ethylene glycol) functionalized multi-walled carbon nanotubes (MWNT-PEG) as the dual templates. Through the hydrolysis of tetraethoxysilane (TEOS), a continuous coating of silica was deposited over the MWNT surfaces to form core-shell structures. Hollow silica nanotubes were finally obtained by removal of core carbon components through calcination. The as-prepared hollow silica structures were characterized by electron microscopy, energy dispersive X-ray spectrometry and infrared spectroscopy. The synthesized silica nanotubes might find potential applications in many fields such as encapsulation, catalysis, biological separation, and sensing.

Keywords: Multi-walled carbon nanotubes, poly(ethylene glycol), silica nanotubes, sol-gel process, dual templates, calcination

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Article Details

VOLUME: 6
ISSUE: 3
Year: 2010
Page: [243 - 248]
Pages: 6
DOI: 10.2174/157341310791171081
Price: $58