Sano N, Wang H, Chhowalla M, Alexandrou I, Amaratunga G A
Department of Engineering, University of Cambridge, Trumpington Street, Cambridge CB2 1PZ, UK.
Nature. 2001 Nov 29;414(6863):506-7. doi: 10.1038/35107141.
The fabrication of carbon nanomaterials usually calls for expensive vacuum systems to generate plasmas and yields are disappointingly low. Here we describe a simple method for producing high-quality spherical carbon nano-'onions' in large quantities without the use of vacuum equipment. The nanoparticles, which have C60 cores surrounded by onion-like nested particles, are generated by an arc discharge between two graphite electrodes submerged in water. This technique is economical and environmentally benign, and produces uncontaminated nanoparticles which may be useful in many applications.
碳纳米材料的制备通常需要昂贵的真空系统来产生等离子体，且产量低得令人失望。在此，我们描述一种无需使用真空设备就能大量生产高质量球形碳“洋葱”的简单方法。这些纳米颗粒具有被洋葱状嵌套颗粒包围的C60核心，是通过浸没在水中的两个石墨电极之间的电弧放电产生的。该技术经济且环境友好，能生产出无污染的纳米颗粒，可用于许多应用。
