Electro-adsorption of Cs(I) ions from aqueous solution by capacitive deionization using ACC/MoO3 composite electrode
文献类型： 外文期刊
作者： Liu, Xiaojing 1 ; Wu, Jinling 2 ; Wang, Jianlong 2 ;
作者机构： 1.Jiangsu Acad Agr Sci, Inst Agr Resource & Environm Sci, Nanjing 210014, Peoples R China
2.Tsinghua Univ, Lab Environm Technol, INET, Beijing 100084, Peoples R China
3.Tsinghua Univ, Beijing Key Lab Radioact Waste Treatment, Beijing 100084, Peoples R China
4.Tsinghua Univ, INET, Energy Sci Bldg, Beijing 100084, Peoples R China
关键词： Cs plus ions; Electro-adsorption; ACC; MoO3; Capacitive deionization
期刊名称：SCIENCE OF THE TOTAL ENVIRONMENT （ 影响因子：9.8； 五年影响因子：9.6 ）
ISSN： 0048-9697
年卷期： 2023 年 865 卷
页码：
收录情况： SCI
摘要： The separation of Cs+from radioactive wastes is of paramount importance, but still a challenge. In this paper, ACC/MoO3composite electrode was prepared and used for the separation of Cs+by capacitive deionization (CDI). The elec-trode materials were characterized by SEM-EDS, FTIR, XPS before and after adsorption experiments. The compositeelectrode was composed of ACC and hexagonal tunnel structure of MoO3, which had a mesoporous structure. The spe-cific surface area, average pore diameter, total pore volume and maximal specific capacitance were 170.4 m2g-1,2.127 nm, 0.906 cm3g-1and 76.3 F g-1, respectively. The adsorption kinetics, isotherms, and the mass transfer pro-cess were analyzed, and the possible adsorption mechanism was proposed. The removal efficiency of Cs+increasedwith the increase of voltage and the decrease of Cs+concentration, which reached 44.7 % after 240 min when voltagewas 1.2 V and Cs+concentration was 5 mg L-1.TheCs+adsorption onto the ACC/MoO3composite was multi-layeradsorption and the adsorption to active sites (AAS) was the rate-limiting step. Overall, the ACC/MoO3composite was a potential electrode for Cs+ separation
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