Effect of gelatin on the water dispersion and centrifugal purification of single-walled carbon nanotubes

• Kazi, Hanium Maria

• Mieno, Tetsu

抄録

We report a convenient and effective procedure for the water dispersion and purification of single-walled carbon nanotubes (SWNTs). The purification procedure involves a combination of dispersion and centrifugation, in which gelatin; an environmentally friendly material is used as a dispersing agent. It has been found that an aqueous solution of gelatin effectively disperses SWNTs for more than a month. Another advantage of using gelatin as a dispersing agent is that it can be easily removed by washing with water and filtration. The centrifugation procedure employs a centrifugal force of about 2500 times the gravitational force to separate the particles. Although carbonaceous and metallic impurities usually have higher density than SWNTs in arc-produced carbon soot, the centrifugation can easily remove impurities leaving undamaged SWNTs in solution when appropriate centrifugal force and a centrifugation time are used. Centrifugation is carried out for three times to sufficiently remove impurities. Finally, the SWNTs are separated from the gelatin by heating in water and filtering.

収録刊行物

• Japanese Journal of Applied Physics

  Japanese Journal of Applied Physics 55 (1S), 01AE04-, 2015-11-05

  Japan Society of Applied Physics

キーワード

• General Physics and Astronomy
• General Engineering

詳細情報

• CRID: 1050845763799729280
• NII論文ID: 120005867372
• NII論文ID: 210000145967
• NII書誌ID: AA12295836
• ISSN: 00214922
• ISSN: 13474065
• DOI: 10.7567/jjap.55.01ae04
• Web Site: http://hdl.handle.net/10297/9845
• Web Site: https://iopscience.iop.org/article/10.7567/JJAP.55.01AE04
• Web Site: https://iopscience.iop.org/article/10.7567/JJAP.55.01AE04/pdf
• 本文言語コード: en
• 資料種別: journal article
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