摘要
Branching carbon nanotubes were synthesized by pyrolysis of acetylene at 700℃ over oxygen free copper and γ Al2O3 supported Cu unitary or Cu/Fe binary catalysts. The morphologies of the as grown products were characterized by transmission electron microscopy. The results indicated that the branching structures were closely related to the Cu component of the catalysts. We proposed that the special electronic structure (3d104s1) of Cu play the crucial role in the formation of the heptagon defects related to the branching structures.
Branching carbon nanotubes were synthesized by pyrolysis of acetylene at 700degreesC over oxygen-free copper and gamma-Al2O3-supported Cu unitary or Cu/Fe binary catalysts. The morphologies of the as-grown products were characterized by transmission electron microscopy. The results indicated that the branching structures were closely related to the Cu component of the catalysts. We proposed that the special electronic structure (3d(10)4 s(1)) of Cu play the crucial role in the formation of the heptagon defects related to the branching structures.
出处
《无机化学学报》
SCIE
CAS
CSCD
北大核心
2003年第7期771-773,共3页
Chinese Journal of Inorganic Chemistry
基金
国家自然科学基金资助项目(No.10175034)
教育部优秀青年教师资助计划(No.1820)项目。
