碳纳米管/活性炭复合微球的制备及其对VB_(12)的吸附应用  

Preparation of Carbon Nanotubes/Activated Carbon Composite Microspheres and Their Application to Adsorption of VB_(12)

作　　者：卢月美[1,2] 巩前明[1,2] 梁吉[1,2] 

机构地区：[1]清华大学机械工程系,北京100084 [2]清华大学先进成形制造教育部重点实验室,北京100084

出　　处：《物理化学学报》2009年第8期1697-1702,共6页Acta Physico-Chimica Sinica

基　　金：国家自然科学基金(50602026)资助项目~~

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23.59mg·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.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.

关 键 词：碳纳米管 壳聚糖 复合微球 吸附 

分 类 号：TB383.1[一般工业技术—材料科学与工程] O647.31[理学—物理化学]