Synthesis and high thermal stability of double-walled carbon nanotubes using nickel formate dihydrate as catalyst precursor
文献类型：期刊论文
| 作者 | Q. F. Liu ; W. C. Ren ; F. Li ; H. T. Cong ; H. M. Cheng |
| 刊名 | Journal of Physical Chemistry C
 |
| 出版日期 | 2007 |
| 卷号 | 111期号:13页码:5006-5013 |
| 关键词 | chemical-vapor-deposition hydrogen-arc-discharge thermogravimetric analysis efficient synthesis raman-scattering growth purification cvd |
| ISSN号 | 1932-7447 |
| 中文摘要 | Nickel formate dihydrate is demonstrated to be an effective catalyst precursor for selectively synthesizing double-walled carbon nanotubes (DWNTs) with high thermal stability by using a hydrogen arc discharge technique. High-resolution transmission electron microscopy (HRTEM) observations show that the as-synthesized DWNTs are of high quality with good structural integrity and narrow diameter distribution (1.98-3.47 nm and 1.32-2.81 nm, respectively, for the outer and inner diameter). Thermogravimetric analysis (TGA) in air indicates that the DWNTs have excellent oxidation resistance up to similar to 800 degrees C, approaching to that of graphitized multiwalled carbon nanotubes and higher than that of DWNTs prepared by other routes or methods. Moreover, Raman analysis and HRTEM observations reveal that these DWNTs can keep good structural stability and other carbon species are removed after oxidation at 650 degrees C in air flow. The formation of DWNTs with high thermal stability is attributed to the cleaning effect of active radicals such as hydrogen and oxygen originated from the decomposition of nickel formate dihydrate and the in situ defect-healing effect induced by high arc current in the arc growth process. This approach opens various application possibilities for DWNTs with high thermal stability to be used in high-temperature composites, nanoelectronic devices, and electron filed emitters operating at high currents, etc. |
| 原文出处 | |
| 公开日期 | 2012-04-13 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/33716]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 推荐引用方式 GB/T 7714 | Q. F. Liu,W. C. Ren,F. Li,et al. Synthesis and high thermal stability of double-walled carbon nanotubes using nickel formate dihydrate as catalyst precursor[J]. Journal of Physical Chemistry C,2007,111(13):5006-5013. |
| APA | Q. F. Liu,W. C. Ren,F. Li,H. T. Cong,&H. M. Cheng.(2007).Synthesis and high thermal stability of double-walled carbon nanotubes using nickel formate dihydrate as catalyst precursor.Journal of Physical Chemistry C,111(13),5006-5013. |
| MLA | Q. F. Liu,et al."Synthesis and high thermal stability of double-walled carbon nanotubes using nickel formate dihydrate as catalyst precursor".Journal of Physical Chemistry C 111.13(2007):5006-5013. |
入库方式： OAI收割
来源：金属研究所
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