| 纳米金属微粒催化制备的洋葱状富勒烯的结构表征 |
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| 引用本文： | 王晓敏,许并社,刘旭光,市野濑英喜. 纳米金属微粒催化制备的洋葱状富勒烯的结构表征[J]. 新型炭材料, 2004, 19(3): 209-213 |
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| 作者姓名： | 王晓敏 许并社 刘旭光 市野濑英喜 |
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| 作者单位： | 1. 太原理工大学,材料科学与工程学院,山西,太原,030024
2. 东京大学,工学部材料系,日本,东京,113-0033 |
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| 基金项目： | 国家自然科学基金(90306014，50025103)，中日国际合作项目(50311140138)，山西省自然科学基金(20031021，20031049) ~~ |
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| 摘 要： | 采用金属Cu，Al做粒／石墨混合材料．用直流电弧放电方法制备了洋葱状富勒烯。对两种产物进行了XRD、SEM、HRTEM和Raman结构表征。结果表明：两种纳米金属微粒均可催化得到洋葱状富勒烯；所得产物中有单纯洋葱状富勒烯和内包纳米金属微粒洋葱状富勒烯，且石墨化程度都很高；纳米金属微粒尺寸大小不同决定洋葱状富勒烯的直径分布不均匀，从而造成其拉曼谱峰相对于石墨特征峰1582cm^-1发生了频移；用汽-液-固(VLS)生长模型描述了洋葱状富勒烯生长机理，解释了汽态碳原子通过在液态催化剂中扩散和析出，逐渐长大成形的现象。
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| 关 键 词： | 催化制 制备 富勒烯 石墨 结构表征 产物 微粒 碳原子 液态 HRTEM |
| 文章编号： | 1007-8827(2004)03-0209-05 |
| 修稿时间： | 2004-05-09 |
Structural characteristics of Onion-Like Fullerenes synthesized by metal nanoparticle catalysis |
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| WANG Xiao-min,XU Bing-she,LIU Xu-guang,Hideki Ichinose. Structural characteristics of Onion-Like Fullerenes synthesized by metal nanoparticle catalysis[J]. New Carbon Materials, 2004, 19(3): 209-213 |
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| Authors: | WANG Xiao-min XU Bing-she LIU Xu-guang Hideki Ichinose |
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| Affiliation: | WANG Xiao-min~1,XU Bing-she~1,LIU Xu-guang~1,Hideki Ichinose~2 |
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| Abstract: | Onion-like Fullerenes (OFs) were synthesized by an arc-discharge technique, with different metal nanoparticles as catalysts. The microstructure of the products was characterized and analysed by XRD, SEM, HRTEM and Raman spectroscopy. Results indicated that two kinds of OFs can be prepared in the presence of metal nanoparticle catalysts: 1) individual OFs and 2) OFs encapsulating metal nanoparticles. The structure of OFs with a high degree of graphitization were shown to be similar to graphite. The diameters of OFs were unevenly distributed because of the (effect) of the size of the metal nanoparticles, which caused Raman spectra showing a frequency shift. A vapour-liquid-solid growth model was used to explain some experimental phenomena during OF formation. |
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| Keywords: | Onion-like Fullerenes(OFs) Metal nanoparticles Characterization VLS growth model |
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