通过自由基聚合方法,将功能化介孔碳(OCMK-3)与N-烯丙基单体相结合,制备了带有互穿网络结构的聚咪唑/有序介孔碳(AIM/OCMK-3)复合材料,并采用FT-IR、SEM和氮气吸附-脱附等温线对复合材料进行了表征。系统研究了溶液pH值、U(Ⅵ)初始浓度、反应时间、温度等因素对AIM/OCMK-3吸附U(Ⅵ)性能的影响。结果表明,pH=4.0时AIM/OCMK-3对U(Ⅵ)的吸附能力最高,吸附平衡时间为30min。相较于CMK-3,AIM/OCMK-3单分子层饱和吸附容量由40.90mg/g增大至213.01mg/g。HCl为最佳洗脱溶液,AIM/OCMK-3在吸附-脱附铀的过程中有较好的稳定性,可重复使用。
The polyimidazole/ordered mesoporous carbon composite with interpenetra- ting framework (AIM/OCMK-3) was prepared by functionalizing mesoporous carbon (OCMK-3) via radical polymerization. AIM/OCMK-3 was characterized by FT-IR, SEM and N2 adsorption-desorption techniques. The effects of different experimental parameters such as initial pH, initial concentration of U(Ⅵ), contact time and tempera- ture on adsorption were investigated. The results show that AIM/OCMK-3 show the highest U(Ⅵ) adsorption capacity at initial pH of 4.0 and contact time of 30 min, and adsorption HC1 is the capacity increases from 40.90 mg/g to 213.01 mg/g after functionalizing. preferred elution solution, AIM/OCMK-3 has good stability in the process of adsorption and desorption, and AIM/OCMK-3 can be reused.