Elías A L, Ayala P, Zamudio A, Grobosch M, Cruz-Silva E, Romo-Herrera J M, Campos-Delgado J, Terrones H, Pichler T, Terrones M
Laboratory for Nanoscience and Nanotechnology Research (LINAN) and Advanced Materials Department, IPICyT, Camino a la Presa San José 2055, Col. Lomas 4a. sección, San Luis Potosí 78216, SLP, México.
J Nanosci Nanotechnol. 2010 Jun;10(6):3959-64. doi: 10.1166/jnn.2010.2009.
We have studied in detail the carbon and nitrogen bonding environments in nitrogen-doped single-walled carbon nanotubes (SWCNTs). The samples consisting of long strands of N-doped SWCNTs were synthesized using an aerosol assisted chemical vapor deposition method involving benzylamine-ethanol-ferrocene solutions. The studied samples were produced using different benzylamine concentrations in the solutions, and exhibited a maximum concentration of ca. 0.3%at of N, determined by X-ray photoelectron spectroscopy (XPS). In general, we observed that the ratio between substitutional nitrogen and the pyridine-like bonded nitrogen varied upon the precursor composition. Moreover, we have observed that the sp2-like substitutional configuration of the C-N bond does not exceed the 50% of the total N atomic incorporation. In addition, we have characterized all these samples using Raman spectroscopy and electron microscopy.
我们详细研究了氮掺杂单壁碳纳米管（SWCNTs）中的碳和氮键合环境。使用涉及苄胺 - 乙醇 - 二茂铁溶液的气溶胶辅助化学气相沉积法合成了由长链氮掺杂单壁碳纳米管组成的样品。所研究的样品是在溶液中使用不同浓度的苄胺制备的，通过X射线光电子能谱（XPS）测定，其氮的最大浓度约为0.3原子百分比。一般来说，我们观察到取代氮与吡啶类键合氮之间的比例随前驱体组成而变化。此外，我们还观察到C - N键的类sp2取代构型不超过总氮原子掺入量的50％。此外，我们使用拉曼光谱和电子显微镜对所有这些样品进行了表征。
