酸处理对碳纳米管纹理结构的影响  

Influence of acid treating on texture and structure of carbon nanotubes

作　　者：关诚灏 金劭[1] 王涛[1] 骞伟中[2] 魏飞[2] 

机构地区：[1]北京化工大学理学院应用化学系,北京100029 [2]清华大学化学工程系,北京100084

出　　处：《化工学报》2013年第S1期182-187,共6页CIESC Journal

摘　　要：使用高分辨透射电镜和比表面孔径分析仪,采用Boehm’s滴定法和N2吸附法,对不同条件酸处理得到的官能团化的碳纳米管进行了系统表征。研究发现碳纳米管是以管间堆积孔为特征孔的大中孔材料,酸化处理增加了管间堆积孔的孔容和比表面积,但对微孔和开口管腔孔有堵塞效应,该效应随着官能团的增加而明显。同时考察了总酸量对比表面积的影响,发现当总酸量在1mmol·g-1附近时比表面积较高。The functional carbon nanotubes(CNTs)under different acid treatment conditions are systematically characterized with Boehm's titration method and the N2 adsorption method using high- resolution transmission electron microscopy and specific surface area and pore size analyzer.The results show that the functionalized CNTs and pristine CNTs are characterized with aggressive meso-and large pores.Acid treatment increases the pore volume and specific surface area of these pores.The created functional groups jam the micropores and opened inner hollow pores.Such effect becomes drastically with the increasing of the amount of functional groups.The effects of total acid amount on specific surface area were also investigated and the optimal value is about 1mmol·g-1.

关 键 词：碳纳米管 官能团 孔结构 比表面积 化学滴定 

分 类 号：TB383.1[一般工业技术—材料科学与工程]