PAN-based carbon nanofiber absorbents prepared using electrospinning

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• 作者：Ching-Iuan Su (1) cysu@mail.ntust.edu.tw
  Yao-Xian Huang (1)
  Jhih-Wei Wong (1)
  Ching-Hsiang Lu (1)
  Chih-Ming Wang (1)
• 关键词：Electrospinning – ; Activation – ; Carbonization – ; Specific surface area
• 刊名：Fibers and Polymers
• 出版年：2012
• 出版时间：April 2012
• 年：2012
• 卷：13
• 期：4
• 页码：436-442
• 全文大小：487.1 KB
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• 作者单位：1. Department of Materials Science and Engineering, National Taiwan University of Science and Technology, Taipei, 10607 Taiwan, R.O.C.
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Polymer Sciences
  
• 出版者：The Korean Fiber Society, co-published with Springer
• ISSN：1875-0052

文摘

This study takes polyacrylonitrile (PAN) as a raw material for PAN-based nanofiber nonwoven prepared using electrospinning. First we construct a thermal-stable process for the fabrication of oxidized nanofiber nonwovens as the precursor. A semi-open high-temperature erect furnace is then used with steam as the activator, through carbonization and activation processes to prepare carbon nanofiber absorbents continuously. The experiment varies the production rate and activator flow rate to prepare carbon nanofiber absorbents. Experimental results show that carbon nanofiber adsorbents are primarily made up of micropores and mesopores, averaging under 20 脜. Given a production rate of 10–20 cm/min with a matching activator feed rate of 120 ml/min, the specific surface area can reach about 1000 m2/g, producing an adsorption ratio of carbon tetrachloride over 200 %.