不同催化剂对热解法制备CN_x纳米管的影响  

Effect of Different Catalysts on Growth of CN_x Nanotubes by Thermal Decomposition

作　　者：丁佩[1,2] 晁明举[2] 梁二军[2] 郭新勇[3] 杜祖亮[3] 

机构地区：[1]郑州航空工业管理学院应用科学系,郑州450015 [2]郑州大学物理工程学院,材料物理国家教育部重点实验室,郑州450052 [3]河南大学特种功能材料实验室,开封475001

出　　处：《Chinese Journal of Chemical Physics》2005年第3期433-438,共6页化学物理学报（英文）

基　　金：ProjectsupportedbytheFoundforUniversityCreativeTalentofHenanProvince(1999-125)andtheYouthfulScienceFoundationofZhengzhouInstituteofAeronauticalIndustryManagemen.

摘　　要：利用铁、钴、镍以及二茂铁为催化剂在高温下热解乙二胺制备CNx纳米管,研究了不同催化剂对CNx纳米管的形貌、结构及产量的影响,并对其催化机理进行了初步讨论.二茂铁和铁催化都能制备出“竹节状”结构的CNx纳米管,但产量较低.钴催化生成CNx纳米管多弯曲,管壁多褶皱,产量较高.镍催化只生成了直径500nm左右的螺旋管.拉曼光谱研究进一步表明,二茂铁催化生成“竹节状”结构CNx纳米管由于氮的掺杂程度相对较高而结晶有序度较低.CNx nanotubes was synthesized by thermal decomposition ethylenediamine catalyzed by pure iron, cobalt, nickel, and ferrocene. The effect of the catalyst on the CNx nanotubes' morphology and yield was studied. The catalysis growth mechanism was also discussed. The CNx nanotubes with the 'bamboo-like' structure and lower yield are produced when iron or ferrocene is used as the catalyst, whereas the curved CNx nanotubes with many pleats through the nanotube walls and higher yield are generated when cobalt is used. The CNx nanotubes catalyzed by nickel are only helix tubes with the diameter of about 500 nm. Raman spectroscopy studies show that the CNx nanotubes catalyzed by ferrocene have a worse crystallinity due to a higher nitrogen incorporation.

关 键 词：CNX纳米管 高温热解 催化剂 拉曼光谱 

分 类 号：TB383[一般工业技术—材料科学与工程] O643.35[理学—物理化学]