Acta Phys. -Chim. Sin. ›› 2007, Vol. 23 ›› Issue (09): 1321-1324.doi: 10.1016/S1872-1508(07)60066-7

• ARTICLE • Previous Articles     Next Articles

Adsorption of Middle Molecular Weight Toxins on Carbon Nanotubes

YE Chao; GONG Qian-Ming; LU Fang-Ping; LIANG Ji   

  1. Department of Mechanical Engineering, Tsinghua University, Beijing 100084, P. R. China; Department of Nephrology, the First Affiliated Hospital of Tsinghua University, Beijing 100016, P. R. China
  • Received:2007-04-04 Revised:2007-06-01 Published:2007-09-06
  • Contact: LIANG Ji E-mail:liangji@mail.tsinghua.edu.cn

Abstract: The adsorption properties of middle molecular weight toxins on two types of carbon nanotubes (CNTs) (i.e., multi-walled carbon nanotubes (MWCNTs) and aligned multi-walled carbon nanotubes (ACNTs)) were studied and compared with two commercial haemoadsorbents (i.e., activated carbon (AC) and macroporous resin (MR)). The results showed that it took only 10 and 15 min for MWCNTs and ACNTs to achieve the adsorption equilibrium, respectively. The adsorption amount of MWCNTs reached 47.18 mg·g -1, which was 5.5 and 10.8 times of that of macroporous resin and activated carbon, respectively. Pore structure analyses indicated that the high adsorption efficiency should be attributed to the higher mesopore volumes of CNTs. All of the results implied the great potential applications of CNTs in haemoperfusion (HP).

Key words: Carbon nanotube, Adsorption, Middle molecular weight toxin, Haemoperfusion

MSC2000: 

  • O643