吸附
密度泛函理论
化学
废水
石墨烯
放射性核素
材料科学
物理化学
计算化学
纳米技术
物理
废物管理
核物理学
工程类
作者
Nan Zhou,Yong Qin,Yang Zhang,Feihong Wu,Wantang Yu,Jie Tan,Jinjuan Cheng,Xi-Jun Wu
摘要
Abstract Density functional theory (DFT) was used to conduct a systematic analysis of the adsorption characteristics of Cs on three two‐dimensional materials: graphene, C 3 N, and BC 3 . The adsorption energies of Cs were calculated, and the electronic structure of the system was analyzed. The dependence of adsorption energies on temperatures was taken into account, and the first‐principles‐derived adsorption energies were used to calculate the influence of temperature on the adsorption rate. It was discovered that BC 3 is more stable than the other two materials, has good adsorption characteristics, and has performance that is not significantly degraded at high temperatures. The adsorption performances of other radionuclides I and Ag (which also have radionuclides) on BC 3 , were also calculated to compare with that of Cs. The results show that the adsorption capacity of Cs on BC 3 is much greater than that of the two lighter elements. Based on this study, BC 3 is a good candidate for removing Cs from nuclear wastewater.
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