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Acta Phys. -Chim. Sin.  2011, Vol. 27 Issue (03): 683-688    DOI: 10.3866/PKU.WHXB20110307
CATALYSIS AND SURFACE SCIENCE     
Preparation of Sulfonated Carbon Nanotubes/Activated Carbon Composite Beads and Their Adsorption Capacity for Low Density Lipoprotein
LU Yue-Mei1,2, GONG Qian-Ming1,2,3, LU Fang-Ping4, LIANG Ji1,2, NIE Qing-Dong5, ZHANG Xiu-Mei5
1. Department of Mechanical Engineering ,Tsinghua University, Beijing 100084, P. R. China;
2. Key Laboratory for Advanced Materials Processing Technology, Ministry of Education, Tsinghua University, Beijing 100084, P. R. China;
3. Department of Materials Science and Engineering, Cornell University, Ithaca 14850, USA;
4. Department of Nephrology, The First Affiliated Hospital of Tsinghua University, Beijing 100016, P. R. China;
5. Tsinghua University Hospital, Beijing 100084, P. R. China
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Abstract  

Sulfonated carbon nanotubes (CNTs)/activated carbon composite beads were obtained by suspension polymerization, carbonization, activation, and further sulfonation using the diazonium salt coupling method. Adsorption of low density lipoprotein (LDL) was explored with these composite beads. The results showed that the composite beads had good sphericity, smooth surface, developed mesopores and were sulfonated by p-aminobenzenesulfonic acid. With the increase of CNTs mass ratio, the adsorption capacity of LDL increased. When the CNTs mass fraction was 45%, the amount of LDL adsorption reached 6.564 mg·g-1 and was 3.3 times as large as that of the beads without CNTs. Therefore, the composite beads have good prospects as LDL adsorbents in hemoperfusion.



Key wordsCarbon nanotube      Composite bead      Sulfonated      Low density lipoprotein      Adsorption     
Received: 02 September 2010      Published: 27 January 2011
MSC2000:  O647  
Fund:  

The project was supported by the National Natural Science Foundation of China (50602026).

Corresponding Authors: LIANG Ji     E-mail: liangji@mail.tsinghua.edu.cn
Cite this article:

LU Yue-Mei, GONG Qian-Ming, LU Fang-Ping, LIANG Ji, NIE Qing-Dong, ZHANG Xiu-Mei. Preparation of Sulfonated Carbon Nanotubes/Activated Carbon Composite Beads and Their Adsorption Capacity for Low Density Lipoprotein. Acta Phys. -Chim. Sin., 2011, 27(03): 683-688.

URL:

http://www.whxb.pku.edu.cn/10.3866/PKU.WHXB20110307     OR     http://www.whxb.pku.edu.cn/Y2011/V27/I03/683

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