Structural and Optical Characteristics of Silica Nanotubes Using CNTs as Template

• 来源期刊: 纳微快报(英文版)
• 学科: 工学
• 关键词: Carbon nanotubes(MWCNTs) Silica Raman Ultra violet/visible/near infrared(UV/Vis/NIR)
• 年，卷（期）: 2010,（4）
• 页码范围: 268-271
• 页数: 4页
• 分类号: TB383.1|TQ127
• 语种: 中文

摘要

Silica coated multi-wall carbon nanotubes(MWCNTs),silica@MWCNTs and nanocomposites were synthesized by a sol-gel method.By using the synthesized nanocomposites and also CNTs as templates,silica nanotubes(silica-NTs) were prepared.The optical properties of fabricated nanocomposites and nanotubes were characterized by back-scattering micro Raman,UV/Vis/NIR and FT-IR spectra,which show the presence of CNTs structure in the nanocomposites.UV/Vis/NIR and FT-IR spectra also show the presence of silica compounds.The recorded spectra from UV/Vis/NIR and FT-IR also confirm the presence of silica compounds in the nanotubes.The results of FE-SEM imaging data indicate that the synthesized samples are MWCNTs coated uniformly by silica molecules,which act as the template to synthesize silica-NTs.