Cesium ion in the simulated liquid radioactive waste was treated with cesium zinc ferrocyanide (CsZnFC) precipitate synthesized by in situ electrochemical synthesis method (ISESM) in this study. The best removal rate of Cs⁺ was 99.42%, and the residual Cs⁺ in the effluent was 29.13 μg L^‐1 under the optimal experimental conditions of initial pH (pH_int) of 7.0, reaction temperature (T) of 35 °C, current density (J) of 0.7 mA cm⁻², electrolytic time (t) of 30 min, and molar ratio of [Fe(CN)₆]^4- to Cs (R_FCN/Cs) of 1.0. The synthesized precipitate was characterized by SEM-EDS, XRD and FT-IR. The precipitated particles are cubic with a particle size of around 190 nm. The XRD pattern shows that the phase composition of the synthesized compound is Cs₂Zn[Fe(CN)₆], and the absorption peaks of O–H bonds, C–N bonds, and C–Fe bonds appear in IR spectrum. The method of in situ electrochemical synthesis of CsZnFC is promising for the treatment of liquid radioactive wastes.

在本研究中，用原位电化学合成法（ISESM）合成的亚铁氰化铯锌（CsZnFC）沉淀物处理模拟液体放射性废物中的铯离子。在初始pH值(pH _int )为7.0、反应温度(T)为35℃的最佳实验条件下，Cs ⁺的最佳去除率为99.42%，出水残留Cs ⁺为29.13 μg L ^{- 1}，电流密度 (J) 为 0.7 mA cm ^-2，电解时间 (t) 为 30 分钟，[Fe(CN) ₆ ] ^4-与 Cs 的摩尔比(R _FCN/Cs) 的 1.0。合成的沉淀物通过SEM-EDS、XRD和FT-IR表征。沉淀的颗粒呈立方体，粒径约为 190 nm。XRD图谱表明合成化合物的相组成为Cs ₂ Zn[Fe(CN) ₆ ]，红外光谱中出现O-H键、C-N键和C-Fe键的吸收峰。CsZnFC的原位电化学合成方法有望用于液体放射性废物的处理。