洋葱碳的制备与应用研究进展

郑艳彬, 姜志刚, 朱品文

Development on the Preparation and Application of Onion-like Carbon

Yan-Bin ZHENG, Zhi-Gang JIANG, Pin-Wen ZHU

表1 OLC的主要制备方法优缺点比较

Table 1 Advantages and disadvantages of OLC's main preparation methods

Preparation methods Advantages Disadvantages Arc discharge High crystallization,low defect density carbon onions prepared in bulk quantities using an arc in water Containing a large amount of carbonaceous impurities such as amorphous carbon, CNTs, CNT-like structures, graphitic debris, and metallic impurities Plasma Low cost and prepared in bulk quantities Containing amorphous carbon and metallic impurities Electron-beam radiation In-situ observations achieved helpful to study the growth mechanism of OLC High cost and low yield Chemical vapor deposition Simple, cheap, easy to implement and to realize mass production Purification to remove amorphous carbon, CNTs, graphite, catalyst support, etc Nanodiamond annealing in vacuum Narrow-sized distribution and produced in massive amount Requiring nanodiamond precursor and high-temperature vacuum oven Thermolysis Massive amount of carbon onions produced at low cost by using simple device Larger size CNOs and/or purification requirement