摘要
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.
出处
《原子能科学技术》
EI
CAS
CSCD
北大核心
2016年第2期247-253,共7页
Atomic Energy Science and Technology
基金
国家自然科学基金资助项目(21301028
21201033
11475044
41461070)
江西省科技支撑计划资助项目(20141BBG70001)
江西省青年科学家培养对象计划资助项目(20122BCB23023)
江西省优势科技创新团队计划资助项目(20142BCB24006)
关键词
聚咪唑
有序介孔碳
U(Ⅵ)
吸附
复合材料
polyimidazole
ordered mesoporous carbon
uranium （ Ⅵ ）
adsorption
composite
