摘要
以单壁碳纳米管和二茂铁为原料,采用气相扩散法合成填充率较高的二茂铁掺杂单壁碳纳米管(Fc@SWNTs)的复合材料.考察激光辐射对样品的影响,结果表明,当激光功率达到20 mW时,对样品进行10 s辐照,样品的拉曼光谱出现了稳定的新峰.对比分析发现,二茂铁在激光辐照后形成了碳化铁,同时部分碳源转化成碳管形成了双层碳管.表明碳化铁是二茂铁裂解向内层碳管转化的中间产物.
Utilizing single-wall carbon nanotubes and ferrocene as raw materials, we synthesized ferrocene-doped carbon nanotubes with a high filling rate through gas phase diffusion method. The obtained materials were confirmed by Raman and infrared spectra. By adjusting laser power on irradiation of samples, obvious changes in the Raman spectra were found, depending on the laser power. The results show that when the laser power is up to 20 mW with the irradiation time of 10 s, some stable new peaks in the Raman spectrum pappeare. In comparative analysis, it was noted that ferrocene formed the iron carbide after laser irradiation and then part of the carbon source transformed into carbon nanotubes and formed double-wall carbon nanotubes. It indicated that the iron carbide was the intermediate products during the conversion of pyrolysis of ferrocene to the inner layer, which was of crucial importance in the comprehension of preparation of double-wall carbon nanotubes by ferrocene-doped carbon nanotubes.
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
2013年第6期1505-1509,共5页
Chemical Journal of Chinese Universities
基金
国家'九七三'计划项目(批准号:2011CB808200)
国家自然科学基金(批准号:10979001
51025206
51032001
21073071和11104105)资助
关键词
二茂铁
单壁碳纳米管
双壁碳纳米管
激光辐照
Ferrocene
Single-wall carbon nanotube
Double-wall carbon nanotube
Laser irradiation
