物理化学学报 >> 2009, Vol. 25 >> Issue (08): 1697-1702.doi: 10.3866/PKU.WHXB20090816

研究论文 上一篇    下一篇

碳纳米管/活性炭复合微球的制备及其对VB12的吸附应用

卢月美, 巩前明, 梁吉   

  1. 清华大学机械工程系, 北京 100084|清华大学先进成形制造教育部重点实验室, 北京 100084
  • 收稿日期:2008-12-23 修回日期:2009-04-22 发布日期:2009-07-16
  • 通讯作者: 梁吉 E-mail:liangji@mail.tsinghua.edu.cn

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

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摘要：

采用反相乳液法制备碳纳米管/壳聚糖复合微球(CNTs/CTS), 并对其进一步炭化、活化制得碳纳米管/活性炭复合微球(CNTs/AC). 以此复合微球为吸附材料, 探索了其对中分子代表物质VB12的吸附. 研究结果表明, 碳纳米管含量70%(w)的复合微球经水蒸气适当活化后球形度好、吸附性能优异, 其对VB12的吸附量达23.59 mg·g-1, 分别是活性炭和大孔吸附树脂的5.4和2.7倍. 分析表明这是由于碳纳米管/活性炭复合微球具有发达的中孔结构.

关键词: 碳纳米管, 壳聚糖, 复合微球, 吸附

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