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Synthesis of Silica Decorated MWCNTs for Field Emission Property

Synthesis of Silica Decorated MWCNTs for Field Emission Property
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摘要 A novel route to nanocomposites containing surface modified multiwalled carbon nanotubes(MWCNTs) by silica thin film is reported.The effect of chemical oxidation on the surface of MWCNTs by using different acid-treatments is studied.The acidic processes are characterized by Raman spectroscopy,thermogravimetry analysis,scanning electron microscopy,and transmission electron microscopy.MWCNTs can be coated homogeneously with silica film by using tetraethoxysilane(TEOS) as a precursor in a sol-gel process.Varying the shell thickness of amorphous silica coating layers on MWCNTs exhibits excellent thermal stability,reliability,and lifetime of field emission properties,especially down to less than 10 nm. A novel route to nanocomposites containing surface modified multiwalled carbon nanotubes(MWCNTs) by silica thin film is reported.The effect of chemical oxidation on the surface of MWCNTs by using different acid-treatments is studied.The acidic processes are characterized by Raman spectroscopy,thermogravimetry analysis,scanning electron microscopy,and transmission electron microscopy.MWCNTs can be coated homogeneously with silica film by using tetraethoxysilane(TEOS) as a precursor in a sol-gel process.Varying the shell thickness of amorphous silica coating layers on MWCNTs exhibits excellent thermal stability,reliability,and lifetime of field emission properties,especially down to less than 10 nm.
作者 陈正瀚 彭毓航 林鸿明 罗吉宗
机构地区 Dept.Mater.Eng. FED R&D Division
出处 《过程工程学报》 CAS CSCD 北大核心 2006年第z2期245-248,共4页 The Chinese Journal of Process Engineering
关键词 multiwalled CARBON nanombes tetraethoxysilane SOL-GEL METHOD multiwalled carbon nanotubes tetraethoxysilane sol-gel method
分类号 TB383 [一般工业技术—材料科学与工程]
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参考文献13

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过程工程学报
2006年 第z2期

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