洋葱状富勒烯的硬脂酸修饰  

Preparation and chemical modification of onion-like fullerenes with fatty acid

作　　者：姚延立[1] 马国利[1] 

机构地区：[1]滨州学院物理与电子科学系,山东滨州256600

出　　处：《山东大学学报（工学版）》2010年第3期91-94,共4页Journal of Shandong University（Engineering Science）

基　　金：滨州学院"青年人才创新工程"科研基金资助项目(BZXYQNLG200805)

摘　　要：采用化学气相沉积(chemical vapor deposition,CVD)法制备了洋葱状富勒烯(onion-like fullerenes,OLFs),采用硫酸和硝酸对其进行了预处理。运用硬脂酸对OLFs进行表面修饰,并研究了硬脂酸修饰后OLFs作为润滑油添加剂的分散性和稳定性。采用高分辨透射电镜(high-resolution transmission electron microscope,HRTEM)分析了OLFs的晶体结构和形貌特征,傅立叶红外(Fourier transfer infrared,FT-IR)实验证明,酸处理后OLFs表面含有大量羟基和羧基官能团,通过酯化反应OLFs能够被硬脂酸包覆,显著提高了OLFs在润滑油中的分散性和稳定性。Onion-like fullerenes （OLFs） were prepared by the chemical vapor deposition（CVD） method and purified by sulfuric acid and nitric acid treatment. The surface modification of OLFs was achieved by refluxing OLFs with ste- aric acid （SA）. The dispersion capability and stability of SA coated OLFs as a lubricant additive was also investiga- ted. Their morphology and structure were characterized by HRTEM. Fourier transfer infrared（Fr-IR） spectrum also indicated that lots of functional groups existed on the surface of purified OLFs and the surface of OLFs was coated with a modified layer of SA. The dispersion capability and stability of SA coated OLFs as a lubricant additive were ef- fectively improved.

关 键 词：洋葱状富勒烯 化学气相沉积 润滑油添加剂 反应机理 

分 类 号：O657[理学—分析化学]