以石墨烯为核树状大分子包覆Co纳米复合材料制备及其吸附性能  

Preparation and Adsorption Properties of Dendrimers with Graphene as Core Encapsulated Co Nanocomposites

作　　者：李泽木 彭晓春[1] 王清华[1] 蔡洪[1] 李佑稷[1] 

机构地区：[1]吉首大学化学化工学院,湖南吉首416000

出　　处：《精细化工》2016年第2期200-206,共7页Fine Chemicals

基　　金：湖南省自然科学基金资助项目(13JJ2030);湖南省高校科技创新团队支持计划"环境能源材料与武陵山区矿产资源精深加工"资助;吉首大学研究生科研创新项目(JGY201501)~~

摘　　要：通过化学还原法制备了以石墨烯为核树状大分子包覆Co纳米复合材料。利用FTIR、TG、XRD和TEM对所制备产物进行了结构表征。考察了不同p H、吸附时间和温度条件下,制备的以石墨烯为核第三代数树状大分子纳米复合材料(G3.0-PAMAM/Co)对刚果红吸附效果的影响。结果表明,G3.0-PAMAM/Co对刚果红是强有力的磁性吸附剂;对刚果红的吸附动力学能符合Lagergren准二级吸附模型,主要为化学吸附;吸附热力学能符合Langmuir等温吸附模型,最大吸附量可达161.49 mg/g。Polyamidoamine（ PAMAM） dendrimers with graphene as core encapsulated Co nanocomposites which was prepared by chemical reduction method. The samples were characterized by means of FTIR,TG,XRD and TEM. The effect of p H value,adsorption time and temperature conditions on the third generations of PAMAM dendrimer with graphene as core nanocomposite（ G3. 0-PAMAM /Co） tested for Congo red adsorption performance were studied. The results showed that G3. 0-PAMAM /Co was strong magnetic adsorbent for Congo red. The adsorption process of Congo red on G3. 0-PAMAM /Co could be described with the Lagrangian pseudo-second-order kinetic model. The results indicated that the adsorption process was mainly chemical adsorption. The thermodynamics of Congo red adsorption on the G3. 0-PAMAM / Co followed the Langmuir adsorption equation. The maximum adsorption amount was 161. 49 mg / g.

关 键 词：氧化石墨烯 纳米复合材料 树状大分子 吸附 水处理技术与环境保护 

分 类 号：TQ085[化学工程]