聚乙二醇放电介质中洋葱状富勒烯的制备与表面修饰  

Preparation by arc-discharge in PEG and surface modification of onion-like fullerene

作　　者：郭明聪[1,2] 杨永珍[1,3] 刘红艳[1,2] 刘旭光[1,2] 许并社[1,3] 

机构地区：[1]太原理工大学教育部新材料界面与工程重点实验室,山西太原030024 [2]太原理工大学化学化工学院,山西太原030024 [3]太原理工大学材料科学与工程学院,山西太原030024

出　　处：《电子显微学报》2009年第1期52-56,共5页Journal of Chinese Electron Microscopy Society

基　　金："973"计划项目(No.2004CB217808);国家自然科学基金资助项目(No.20676086);教育部新世纪优秀人才支持计划(NCET-06-0262);科技部国际科技合作计划(No.2007DFA50940)~~

摘　　要：以分子量为600、400和200的聚乙二醇(PEG)为介质电弧放电法制备了洋葱状富勒烯(OLFs);利用空气氧化法于450℃条件下对产物进行了提纯,并用含氧射频等离子体对纯化后的OLFs进行了表面氧化修饰;用场发射扫描电镜、高分辨透射电镜、X射线衍射和傅立叶变换红外光谱对所得产物进行了表征和分析。结果表明:在PEG200中放电制得的OLFs粒径均匀,石墨化程度较高;空气氧化法能提高OLFs产物的纯度;当氧气含量为20%时,表面氧化修饰效果明显。Onion-like fullerenes （OLFs） were synthesized by liquid arc-discharge in polyethylene glycol （PEG） with different molecular weight （600, 400, 200）. The as-synthesized products were purified by air oxidation. And then purified OLFs were modified in oxygen-containing radio frequency （RF） plasma. The morphologies and structures of the products were characterized by field emission scanning electron microscopy, high resolution transmission electron microscopy, X-ray diffraction and Fourier transform infrared spectrometry. It was found that the products synthesized in PEG 200 had uniform sizes and high degree of graphitization, air oxidation improved product purity, and surface modification was realized obviously in O_2（20%）＋Ar RF plasma.

关 键 词：聚乙二醇 洋葱状富勒烯 制备 提纯 修饰 

分 类 号：O613.71[理学—无机化学]