γ辐照后MWNTs的水溶性修饰  

Modification of water-soluble MWNTs after γ-irradiation

作　　者：郭金学[1] 李文新[1] 

机构地区：[1]中国科学院上海应用物理研究所

出　　处：《辐射研究与辐射工艺学报》2006年第4期193-196,共4页Journal of Radiation Research and Radiation Processing

基　　金：国家自然科学基金(10475109)资助

摘　　要：为开展碳纳米管的生物效应研究,多壁碳纳米管经γ辐照后与葡糖胺进行共价连接,得到水溶性较好多壁碳纳米管。拉曼光谱显示,γ辐照影响了多壁碳纳米管的表面结构,在其表面产生了一定量的缺陷。元素分析和热重分析表明,经过γ辐照后修饰的多壁碳纳米管表面连接了更多的葡糖胺,且其浓度随γ辐照剂量的增加而增加,结果导致多壁碳纳米管在水中的溶解度相比未辐照进行修饰的多壁碳纳米管有明显提高。利用γ辐照后多壁碳纳米管表面缺陷增多,为碳纳米管的修饰和进一步应用提供了新的思路。Water-soluble multi-walled carbon nanotubes （MWNTs） were obtained by functionalizing MWNTs with glucosamine after γ-ray irradiation. Products after each chemical treatment were characterized by FTIR and RAMAN spectroscopy. Elemental and TGA analyses of the modified MWNTs indicated that the concentration of functional groups bound on MWNTs increased with irradiation dose, due to increased defects of the MWNTs induced by γ-irradiation. Water solubility of MWNTs modified with glucosamine after irradiation enhanced considerably. The results provide a novel access for functionalizations and applications of carbon nanotubes.

关 键 词：多壁碳纳米管 Γ辐照 水溶性 化学修饰 

分 类 号：TB383[一般工业技术—材料科学与工程] O612.4[理学—无机化学]