Citation: LU Yue-Mei, NG 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[J]. Acta Physico-Chimica Sinica, ;2011, 27(03): 683-688. doi: 10.3866/PKU.WHXB20110307 shu

Preparation of Sulfonated Carbon Nanotubes/Activated Carbon Composite Beads and Their Adsorption Capacity for Low Density Lipoprotein

LU Yue-Mei ^1,2 ,
NG Qian-Ming ^1,2,3 ,
LU Fang-Ping ⁴ ,
LIANG Ji ^1,2, ,
NIE Qing-Dong ⁵ ,
ZHANG Xiu-Mei ⁵

1.
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

Received Date: 2 September 2010
Available Online: 27 January 2011
Fund Project: 国家自然科学基金(50602026)资助项目 (50602026)

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 od 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 od prospects as LDL adsorbents in hemoperfusion.
- Carbon nanotube,
- Composite bead,
- Sulfonated,
- Low density lipoprotein,
- Adsorption
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