采用一种新颖、高效的方法,将元素硫应用于碳纳米管(CNTs)的表面改性,在CNTs表面通过硫自由基加成随后还原的方法接枝巯基基团,这种改性方法步骤简单、安全,且不会破坏CNTs的内部结构,可以应用于更多领域。利用该方法分别对多壁碳纳米管和单壁碳纳米管进行表面改性,制备了巯基改性碳纳米管,确定了巯基改性多壁碳纳米管的最佳反应条件并采用傅里叶变换红外光谱仪、拉曼光谱仪、热重分析仪和X射线光电子能谱对所制样品进行表征。
A novel and effective method was applied to the surface modification of carbon nanotubes (CNTs) by using element sulfur.The thiol groups were grafted onto the surface of CNTs by addition of sulfur radicals followed by reduction.The new method was simple and safe,with no destroy to the internal structure of CNTs,which was expected to be applied in more fields.Thiol-modified multi walled CNTs and thiol-modified single walled CNTs were prepared using this method.Fourier transform infrared spectroscopy (FT-IR),Raman spectroscopy,thermogravimetric analysis and X-ray photoelectron spectroscopy were used to characterize the thiol groups grafted in the surface of CNTs.
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