摘要
为了提高多壁碳纳米管(MWNTs)的吸附性能,采用超临界水(SCW)技术改性MWNTs,研究了在超临界水中不同处理温度和处理时间对MWNTs结构和形貌的影响.分别利用傅里叶变换红外光谱(FT-IR)、X-射线光电子能谱(XPS)、拉曼光谱(Raman)和扫描电子显微镜(SEM)等测试手段分析了改性前后MWNTs结构和形貌的变化.结果表明:超临界水对MWNTs有较弱的氧化能力和较强的物理刻蚀作用,处理时间对MWNTs的影响高于温度的影响.
In order to improve the adsorptivity of MWNTs were modified by super-critical water（SCW） techniques.The effects of different treatment temperatures and times in SCW on the structure and morphology of MWNTs were investigated.The FTIR,XPS,Raman and SEM were used to analyze the changes of structure and morphology of MWNTs before and after SCW treatment.The results showed that MWNTs were slightly oxidized（the highest oxygen content is 4.23%） and strongly etched（the highest I D /I G value is 0.62） in the super-critical water.Moreover,the effect of treatment time is more obvious than that of treatment temperature.
出处
《材料科学与工艺》
EI
CAS
CSCD
北大核心
2010年第5期662-664,669,共4页
Materials Science and Technology
基金
哈工大科研创新基金资助项目(HIT.NSRIF.2008.05)
中国博士后基金资助项目
关键词
碳纳米管
超临界水
结构
MWNTs super-critical water structure
