MPCVD法在碳纤维上制备碳纳米管

GROWTH OF CARBON NANOTUBES ON THE SURFACE OF CARBON FIBERS BY MICROWAVE PLASMA CHEMICAL VAPOR DEPOSITION

摘要: 利用微波等离子体化学气相沉积（MPCVD）法在碳纤维上制备了碳纳米管，并在此基础上系统地研究了微波功率、反应时间、催化剂前驱体的吸附时间以及吸附浓度对碳纳米管生长的影响。采用扫描电子显微镜（SEM）对样品的表面形貌进行表征。结果表明，微波功率、反应时间对碳纳米管的形貌有很大影响，此外，随着吸附时间的增加，碳纳米管的生长速度快且产量高；吸附浓度很大时，碳纤维表面上产生了大量的无定形碳和石墨，严重影响了碳纳米管的生长质量。

Abstract: In this paper，carbon nanotubes were synthesized on the surface of carbon fibers by microwave plasma chemical vapor deposition methods.The effects of the microwave power，reaction time，adsorption time and adsorption concentration of catalyst precursor on carbon nanotubes growth were systematically investigated.Surface morphology of the sample was detected by SEM.The results showed that microwave power，reaction time has a great influence on the morphology of carbon nanotubes.With the prolong of adsorption time，the growth rate of carbon nanotubes increase and their yield improve; however，a large amount of amorphous carbon and graphite produce on the surface of carbon nanotubes as a result of excessive adsorption concentration of catalyst precursor，which makes the quality of carbon nanotubes lower seriously.