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Current Nanoscience

Editor-in-Chief

ISSN (Print): 1573-4137
ISSN (Online): 1875-6786

Dual-template Assisted Synthesis of Silica Nanotubes

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

Volume 6, Issue 3, 2010

Page: [243 - 248] Pages: 6

DOI: 10.2174/157341310791171081

Price: $65

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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