碳纳米管粉体高温石墨化的研究

An approach of graphitizating carbon nanotubes at high temperature

对碳纳米管粉体在高温和高压进行处理,使其中的非晶碳转变成晶态碳,达到净化目的。通过透射电镜、拉曼光谱分析、比表面积测试、二氧化碳和空气氧化后的失重测试,证实石墨化程度有显著提高。说明对碳纳米管粉体的高温石墨化可以改变碳纳米管性能。

The powders of carbon nanotubes (CNTs) are graphitized under condition of high temperature and pressure to transform amorphous carbon in CNTs. Measurement results, which are got through TEM, measurement of specific area, measurement of quality loss after being oxidized by CO2 and air, show that the amorphous carbon has been changed to crystalline carbon.The degree of graphitization of carbon nanotube powders is significant elevated. All these show that the properties of CNTs can be changed by means of the treatment of graphitizing.