Acta Phys. -Chim. Sin. ›› 2009, Vol. 25 ›› Issue (08): 1697-1702.doi: 10.3866/PKU.WHXB20090816

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Preparation of Carbon Nanotubes/Activated Carbon Composite Microspheres and Their Application to Adsorption of VB12

LU Yue-Mei, GONG Qian-Ming, LIANG Ji   

  1. Department of Mechanical Engineering, Tsinghua University, Beijing 100084, P. R. China|Key Laboratory for Advanced Materials Processing Technology, Ministry of Education, Tsinghua University, Beijing 100084, P. R. China
  • Received:2008-12-23 Revised:2009-04-22 Published:2009-07-16
  • Contact: LIANG Ji E-mail:liangji@mail.tsinghua.edu.cn

Abstract:

Novel carbon nanotubes/activated carbon (CNTs/AC) composite microspheres were prepared by inverse emulsion polymerization, carbonization, and activation, and were applied to the adsorption of VB12, a representative of middle molecular weight toxins found in the human body. Results show that CNTs/AC composite microspheres with 70%(w) CNTs have good sphericity and their adsorption of VB12 reaches 23.59 mg·g-1, which is 5.4 and 2.7 times as much as that of activated carbon and macroporous resin, respectively. This is attributed to the more developed mesopores found in the microspheres.

Key words: CNTs, Chitosan, Composite microsphere, Adsorption

MSC2000: 

  • O643