Nitrogen-doped carbon nanotubes synthesized with carbon nanotubes as catalyst |
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| Authors: | Can WangZhenghong Huang Liang Zhan Yanli WangWenming Qiao Xiaoyi LiangLicheng Ling |
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| Affiliation: | a State Key Laboratory of Chemical Engineering, Key Laboratory for Specially Functional Polymers and Related Technology of Ministry of Education, East China University of Science and Technology, Shanghai 200237, PR Chinab Department of Materials Science and Engineering, Tsinghua University, Beijing 100084, PR China |
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| Abstract: | Nitrogen-doped carbon (CNx) nanotubes were synthesized with carbon nanotubes (CNTs) as catalyst by detonation-assisted chemical vapor deposition. CNx nanotubes exhibited compartmentalized bamboo-like structure. Electron energy loss spectroscopy and elemental mapping studies indicated that the synthesized tubes contained high concentration of nitrogen (ca. 17.3 at.%), inhomogeneously distributed with an enrichment of nitrogen within the compartments. X-ray photoelectron spectroscopy analysis revealed the presence of pyridine-like N and graphitic N incorporated into the graphitic network. The catalytic activity of CNTs for CNx nanotube growth was ascribed to the nanocurvature and opening edges of CNT tips, which adsorbed Cn/CN species and assembled them into CNx nanotubes. |
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| Keywords: | Carbon nanotubes Nitrogen-doped carbon nanotubes Catalyst |
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