Dual-template Assisted Synthesis of Silica Nanotubes

作者：Liao, Qiulin; Wang, Yexiang; Gao, Yong; Li, Huaming^*

来源：Current Nanoscience, 2010, 6(3): 243-248.

DOI：10.2174/157341310791171081

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

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.

• 出版日期2010-6
• 单位湘潭大学