Isolation, Purification, and Application of Single Wall Carbon Nanotubes Using Biopolymer.

使用生物聚合物的单壁碳纳米管的分离、纯化和应用。

• 批准号: 14550691
• 负责人: ISHII Tadahiro
• 金额: $ 2.56万
• 依托单位: Tokyo University of Science
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2002
• 资助国家: 日本
• 起止时间: 2002 至 2003
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-14550691/
• 关键词: Carbon Nanotubes; Single Wall Carbon Nanotubes; Gelatin; Polysaccharide; Laser Ablation; Purification; Composite; カーボンナノチューブ

The single wall carbon nanotubes (SWNTs) are novel molecular-scale tubes exhibiting unique properties which depend on their diameter and chirality. However, most of the raw and available SWNTs samples contain not only SWNTs but also other carbonaceous impurities such as amorphous carbon, fullerenes, nanoparticles, and transition metals that are introduced as a catalyst during the synthesis of the SWNTs. Hence, We have developed a novel method for the purification of single wall carbon nanotubes (SWNTs) by annealing in air and dispersing the SWNTs in an aqueous solution of gelatin or carboxymethylcellulose (CMC). The evaluation of purity of the resulting SWNTs was done by means of analytical techniques such as electron microscopy, Raman spectroscopy, and thermogravimetric analysis (TGA). As a result, it was revealed that the gelatin or the CMC played an effective role in exfoliation of the SWNT bundles as a good dispersion reagents and thereby, SWNTs with appreciably high quality were prepared.On the other hand, Highly graphited carbon nanofibers (CNFs) have been synthesized by catalytic decomposition of ethanol. The Fe/Co bimetalic catalyst was employed in this procedure and the metal catalyst particles were generated by the pulsed laser deposition on the tungsten substrate. The obtained CNFs were investigated by the SEM, TEM, Electron diffraction and Raman spectroscopy. From the electron microscope observation, the synthesized CNFs have diameters in rage of 40〜100nm and length was up to 2μm. The Multi Wall Carbon Nanotubes (MWNTs) were also observed in obtained sample. As a result, it was revealed that the pulsed laser deposition is powerful tool to produce the nano-particles of the catalyst.

单壁碳纳米管（SWNTs）是一种新型的分子尺度管，其独特的性质取决于其直径和手性。然而，大多数原始和可用的SWNT样品不仅含有SWNT，而且还含有在SWNT合成期间作为催化剂引入的其他含碳杂质，例如无定形碳、富勒烯、纳米颗粒和过渡金属。因此，我们开发了一种新的方法，通过在空气中退火和分散的单壁碳纳米管在明胶或羧甲基纤维素（CMC）的水溶液中纯化的单壁碳纳米管（SWNTs）。通过分析技术如电子显微镜、拉曼光谱和热重分析（TGA）来评价所得SWNT的纯度。结果表明，明胶或CMC作为分散剂，对单壁碳纳米管束的剥离起到了很好的作用，从而制备出了高质量的单壁碳纳米管。另一方面，通过催化分解乙醇制备出了高石墨化的碳纳米纤维。采用Fe/Co双金属催化剂，通过脉冲激光沉积法在钨基体上制备金属催化剂颗粒。用SEM、TEM、电子衍射和拉曼光谱对所制备的CNFs进行了表征。电子显微镜观察表明，合成的碳纳米纤维直径在40 ~ 100 nm之间，长度可达2μm。在所得样品中还观察到多壁碳纳米管（MWNTs）。结果表明，脉冲激光沉积是制备纳米催化剂的有力工具。

项目成果

Teruo Takahashi, Katsunori Tsunoda, Hirofumi Yajima, Tadahiro Ishii: "Dispersion and Purification of Single Wall Carbon Nanotubes Using Carboxymethylcellulose."Japanese Journal of Applied Physics. (in press). (2004)

Teruo Takahashi、Katsunori Tsunoda、Hirofumi Yajima、Tadahiro Ishii：“使用羧甲基纤维素分散和纯化单壁碳纳米管。”日本应用物理学杂志。

Teruo Takahashi, Katsunori Tsunoda, Hirofumi Yajima, Tadahiro Ishii: "Purification of Single Wall Carbon Nanotubes Using Gelatin"Japanese Journal of Applied Physics. 43(3). 1227-1230 (2004)

Teruo Takahashi、Katsunori Tsunoda、Hirofumi Yajima、Tadahiro Ishii：“使用明胶纯化单壁碳纳米管”日本应用物理学杂志。

Purification of Single Wall Carbon Nanotubes Using Gelatin

使用明胶纯化单壁碳纳米管

• 发表时间: 2004
• 期刊: Jpn. J. Appl. Phys. 43
• 作者: T.Takahashi;K.Tsunoda;H.Yajima;T.Ishii
• 通讯作者: T.Ishii

Katsunori Tsunoda, Teruo Takahashi, Hirofumi Yajima, Tadahiro Ishii: "MODIFICATION OF SINGLE-WALL CARBON NANOTUBES BY LASER IRRADIATION IN SOLVENTS"The Review of Laser Engineering. (2003)

Katsunori Tsunoda、Teruo Takahashi、Hirofumi Yajima、Tadahiro Ishii：“在溶剂中通过激光辐照对单壁碳纳米管进行改性”激光工程评论。

Dispersion and purification of single-wall carbon nanotubes using carboxymethylcellulose

• DOI: 10.1143/jjap.43.3636
• 发表时间: 2004-06-01
• 期刊: JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS
• 作者: Takahashi, T;Tsunoda, K;Ishii, T
• 通讯作者: Ishii, T