摘要
琼脂糖凝胶电泳(AGE)是实现金属性单壁碳纳米管(m-SWCNTs)和半导体性单壁碳纳米管(s-SWCNTs)低成本、规模化分离的有效技术之一。本研究利用琼脂糖凝胶电泳分离单壁碳纳米管。通过紫外-可见-近红外吸收光谱和拉曼光谱对色谱带进行分段表征,发现电泳中迁移的最快的部分m-SWCNTs含量最高。考察了琼脂糖的浓度对SWCNTs中m-SWCNTs分离的影响。结果表明:高的琼脂糖浓度有利于m-SWC-NTs的富集,可以通过扩大电荷密度带来的迁移速率的差异来使SWCNTs中的m-SWCNTs得到更有效的分离。
The agarose gel electrophoresis（AGE） is one of the low-cost,large scale technologies for the separation of metallic single-walled carbon nanotubes（m-SWCNTs） and semiconducting single-walled carbon nanotubes（s-SWCNTs）.The separated m-SWCNTs are divided into several parts and characterized by the UV-visible-near infrared absorption spectrum and the Raman spectrum respectively.The results show that the moieties with the fastest electrophoresis migration rate contain more m-SWCNTs.Furthermore,the effects of different agarose concentrations on the separating efficiencies of SWCNTs are investigated.It is found that higher concentration of agarose gel is beneficial to the enrichment of the m-SWCNTs and the separating efficiency of the m-SWCNTs could be realized by increasing the charge density on the surface of the SWCNTs.
出处
《分析化学》
SCIE
EI
CAS
CSCD
北大核心
2012年第12期1839-1844,共6页
Chinese Journal of Analytical Chemistry
基金
国家自然科学基金(Nos.20903069
21175060)资助项目
关键词
单壁碳纳米管
琼脂糖凝胶电泳
紫外-可见-近红外吸收光谱
拉曼光谱
Single-walled carbon nanotube
Agarose gel electrophoresis
Ultraviolet-visible-near infrared absorption spectrum
Raman spectrum
