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论文类型：期刊论文

发表时间：2013-07-15

发表刊物：APPLIED SURFACE SCIENCE

收录刊物：SCIE、EI

卷号：277

页面范围：88-93

ISSN号：0169-4332

关键字：Nitrogen doping; Single-walled carbon nanohorn; Arc discharge; Atmospheric pressure

摘要：Nitrogen-doped single-walled carbon nanohorns (N-SWCNHs) have been synthesized by a flowing nitrogen assisted arc discharge method at atmospheric pressure in a tubular reactor. X-ray diffraction and thermogravimetric analysis have revealed their high quality. Scanning electron microscopy and transmission electron microscopy examinations have shown that N-SWCNHs have typical spherical structure with a diameter of 40-80 nm. Oxidation treatment suggests the opening of cone-shaped caps of N-SWCNHs. The FT-IR and X-ray photoelectron spectroscopy analysis indicate that most of the nitrogen atoms are in N-6, N-5, and triple-bonded -CN bonding configuration present at the defect sites or the edges of graphene layers. (c) 2013 Elsevier B.V. All rights reserved.