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《Materials for Mechanical Engineering》 2018-04
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Synthesis of Bamboo-like N-doped Carbon Nanotubes by Catalytic Pyrolysis of Melamine

ZHENG Yangfan;LIANG Feng;TIAN Liang;WANG Junkai;ZHANG Haijun;The State Key Laboratory of Refractories and Metallurgy,Wuhan University of Science and Technology;  
Bamboo-like N-doped carbon nanotubes were prepared by catalytic pyrolysis method with melamine as raw material and FeCl_2·6H_2O as catalyst precursor.The effects of the reaction temperature and FeCl_2·6H_2O content on the phase composition and microstructure of the product were investigated.The results show that at the reaction temperatures of 650-800 ℃,the yield and length to diameter ratio of the carbon nanotubes first increased and then decreased with the increase of reaction temperature.The optimal reaction temperature was 750 ℃.When pyrolyzing at 750℃,the yield and length to diameter ratio of the carbon nanotubes first increased and then decreased with the increase of FeCl_2·6H_2O content and the optimal content was 0.50 wt% of melamine.The obtained carbon nanotubes under this condition had diameters of 40-50 nm and lengths of 10-15μm,the N-doping amount in the carbon nanotubes was about 3.42 at%,in which the fraction of graphitic N was about 43.1 mol%.
【Fund】: 国家自然科学基金面上项目(51472184 51472185);; 湖北省教育厅高等学校优秀中青年科技创新团队计划项目(T201602)
【CateGory Index】: TB383.1
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