CAJ | 학술논문

通过向两种金属酞菁的混合物添加一定量的硫粉,在800～950℃裂解合成了大面积的直立碳纳米管.采用场发射扫描电镜(FE-SEM)、高分辨透射电镜(HRTEM)和拉曼光谱对产物进行了观察和表征,结果显示:所合成的碳纳米管(直径为15～35 nm,长度为200～800 nm)管身平直,具有很好的石墨化程度,且杂质很少.采用两种金属酞菁((M(Ⅱ)Pc,M=Fe,Co))进行混合裂解时,既可以提供碳源,而且可以产生相当均匀的催化剂颗粒,有利直立碳纳米管的沉积.这种将两种酞菁进行固相混合裂解的方法.相当安全高效,有利于大规模生产直立碳纳米管.
통과향량충금속태정적혼합물첨가일정량적류분,재800～950℃렬해합성료대면적적직립탄납미관.채용장발사소묘전경(FE-SEM)、고분변투사전경(HRTEM)화랍만광보대산물진행료관찰화표정,결과현시:소합성적탄납미관(직경위15～35 nm,장도위200～800 nm)관신평직,구유흔호적석묵화정도,차잡질흔소.채용량충금속태정((M(Ⅱ)Pc,M=Fe,Co))진행혼합렬해시,기가이제공탄원,이차가이산생상당균균적최화제과립,유리직립탄납미관적침적.저충장량충태정진행고상혼합렬해적방법.상당안전고효,유리우대규모생산직립탄납미관.
Straight carbon nanotubes (CNTs) were synthesized in large scale through thermal chemical vapor deposition(TCVD) by pyrolysis of two mixed metal phthalocyanines with a certain amount of sulfur at 800～950 ℃. The results by field emission scanning electron microscopy (FE-SEM), high resolution transmission electron microscopy (HRTEM) and Raman spectroscopy (Raman) reveal that the as-synthesized CNTs (15～35 nm in diameter, 200～800 nm in length) are quite straight and well-graphitized with nearly no defects. Two kinds of mixed transition metal phthalocyanines(M(Ⅱ)Pc, M=Fe, Co) were used as carbon source to obtain uniform catalysts favoring the growth of the straight CNTs. The solid-state hybrid method is quite safe and efficient for synthesis of straight carbon nanotubes in large scale.