摘要
为开发出对放射性废液中长寿期活化产物具有高效选择性的吸附剂,在室温下制备了金属-有机框架(MOFs)材料ZIF-67,并对该材料进行了热稳定性测试以及结构的表征。首次考察了初始pH值、吸附时间和溶液初始浓度等因素对ZIF-67吸附Co(Ⅱ)和Mn(Ⅱ)的影响。结果表明:ZIF-67属于微孔材料,具有良好的水热稳定性。在pH为6.0、温度为30℃、初始浓度为500 mg/L的条件下,ZIF-67对Co(Ⅱ)和Mn(Ⅱ)的饱和吸附容量分别达到305.63 mg/g和197.43 mg/g。ZIF-67在混合金属离子溶液中对Co(Ⅱ)、Mn(Ⅱ)和Ni(Ⅱ)具有良好的选择吸附性能。因此,ZIF-67在实际放射性废液中活化产物的处理中有良好的应用前景。
In order to develop an adsorbent with high efficiency and selectivity for long-lived activation products in radioactive liquid waste,metal-organic frameworks(MOFs)material ZIF-67 was prepared at room temperature,and the thermal stability test and structural characterization of the material were carried out.The influence of the initial pH values,adsorption time and initial concentration of the solution on the adsorption of Co(II)and Mn(II)by ZIF-67 was investigated for the first time.The results show that ZIF-67 is a microporous material with good hydrothermal stability.Under the conditions of pH=6.0,temperature of 30℃,and initial concentration of 500 mg/L,the saturated adsorption capacities of ZIF-67 for Co(II)and Mn(II)reached 305.63 mg/g and 197.43 mg/g,respectively.ZIF-67 has adsorption selectivity for Co(II),Mn(II)and Ni(II)in mixed metal ion solution.Therefore,ZIF-67 has a good application prospect in the treatment of activation products in actual radioactive liquid waste.
作者
周义朋
门金凤
王晓伟
杜志辉
梁成强
贾铭椿
Zhou Yipeng;Men Jinfeng;Wang Xiaowei;Du Zhihui;Liang Chengqiang;Jia Mingchun(Department of Nuclear Science and Engineering,Naval University of Engineering,Wuhan,430033,China)
出处
《核动力工程》
EI
CAS
CSCD
北大核心
2022年第6期209-216,共8页
Nuclear Power Engineering
基金
国家自然科学基金(51573208)。
