十六烷基胺-多壁碳纳米管复合物的制备及NO吸附性能

为制备在室温下对NO吸附性能优异的材料,采用十六烷基胺并通过化学缩合的方法对多壁碳纳米管进行了修饰,制备了十六烷基胺-多壁碳纳米管复合物,并分别采用TG-DSC,XRD,FT-IR,Raman,SEM等技术对所制备的复合物进行了表征.研究表明:十六烷基胺通过酰胺键修饰在多壁碳纳米管表面,经十六烷基胺修饰的碳纳米管结构基本没有发生变化.原位TG-MS结果表明:在室温下,经十六烷基胺修饰的多壁碳纳米管的NO吸附量是纯碳纳米管的8.58倍,其选择性吸附NO能力较纯碳纳米管明显提高.原因是十六烷基胺修饰的多壁碳纳米管n型电导能力增强,而使受电子体NO分子易与修饰的碳纳米管作用并发生化学吸附.

Synthesis of cetylamine modified muli-walled carbon nanotubes composite and NO adsorption property

To study and synthesize materials with surpior NO adsorption property at room temperature,muli-walled carbon nanotubes(MWCNTs) modified with cetylamine have been successfully synthesized by a condensation method.The obtained samples are characterized in detail by TG-DSC,XRD,FT-IR,Raman and SEM.The results of FT-IR show the formations of amide group on the MWCNTs.And,the means of XRD and Raman indicate that the structure of MWCNTs unchanged.In situ TG-MS the results show that: at room temperature,the selective NO adsorption ability of modified MWCNTs is obviously improved compared with pure MWCNTs,and the adsorption capacity are 8.58 times higher than on the surface of pure MWCNTs.The reason is that cetylamine can improve n type conduction of MWCNTs and increase the interaction between MWCNTs and NO.