Fabrication of carbon nanotube sheets and their bilirubin adsorption capacity
Fabrication of carbon nanotube sheets and their bilirubin adsorption capacity
复制标题
DOI：
10.1016/j.colsurfb.2009.02.017
复制
发表时间：
2009-07-01
影响因子：
5.8
通讯作者：
Ogino, T.
中科院分区：
文献类型：
--
作者：
Ando, K.;Shinke, K.;Ogino, T.
研究了胆红素在碳纳米管表面的吸附，以开发一种新型的血浆分离吸附剂。粉末状碳纳米管首先在各种吸附条件下，如温度和胆红素溶液的初始浓度进行了检查。使用可见吸收光谱法从吸附过程后溶液中胆红素的残留浓度测量吸附能力。我们发现，多壁碳纳米管（MWCNTs）表现出更大的吸附能力比单壁碳纳米管（SWCNTs）的胆红素分子。为了保证吸附剂的安全性，我们制作了碳纳米管片，其中CNT向等离子体的泄漏被抑制。由于单壁碳纳米管更适合于制备坚固的片材，因此由单壁碳纳米管作为支架和多壁碳纳米管作为高效吸附剂组成的复合片材。还制备了碳纳米管/聚苯胺复合片。由于碳纳米管具有与石墨相似的表面结构，具有较大的比表面积和对多环化合物分子的吸附能力，因此其对胆红素的吸附能力远大于传统材料。(C)2009 Elsevier B. V.保留所有权利。
Bilirubin adsorption on carbon nanotube surfaces has been studied to develop a new adsorbent in the plasma apheresis. Powder-like carbon nanotubes were first examined under various adsorption conditions such as temperatures and initial concentrations of bilirubin solutions. The adsorption capacity was measured from the residual concentrations of bilirubin in the solution after the adsorption process using a visible absorption spectroscopy. We found that multi-walled carbon nanotubes (MWCNTs) exhibit greater adsorption capacity for bilirubin molecules than that of single-walled carbon nanotubes (SWCNTs). To guarantee the safety of the adsorbents, we fabricated carbon nanotube sheets in which leakage of CNTs to the plasma is suppressed. Since SWCNTs are more suitable for robust sheets, a complex sheet consisting of SWCNTs as the scaffolds and MWCNTs as the efficient adsorbents. CNT/polyaniline complex sheets were also fabricated. Bilirubin adsorption capacity of CNTs has been found to be much larger than that of the conventional materials because of their large surface areas and large adsorption capability for polycyclic compound molecules due to their surface structure similar to graphite. (C) 2009 Elsevier B.V. All rights reserved.