基于紫精的阳离子型有机聚合物对钼锝分离的应用研究

为了寻找新型的高效钼锝分离材料，提高淋洗液中^99mTc放射性浓度以满足医学诊断的使用，本研究合成一种基于紫精的阳离子型有机聚合物（VBCOP），使用Re作为Tc的非放射性替代物，研究VBCOP对ReO^-₄以及MoO^2-₄的吸附性能，分别探究pH和Mo、Re的初始浓度对Mo、Re吸附性能的影响，并在此基础上探究VBCOP在含Re(Ⅶ)10 mg·L^-1和不同摩尔比的Mo溶液对Re的吸附效果。结果表明：VBCOP表现出对Re优秀的吸附性能以及良好的选择性。VBCOP在一个宽泛的pH范围内均能表现出良好的吸附性能，碱性条件对Mo的影响要大于对Re的影响。VBCOP对ReO^-₄的饱和吸附容量达597 mg·g^-1，对MoO^2-₄的饱和吸附容量为196 mg·g^-1。在中性条件下，Re∶Mo摩尔比为1∶10 000时，VBCOP仍能对ReO^-₄有一定的吸附效果（35%），这为后续的深入研究奠定了基础。

Research on Separation of Tc from Mo with Viologen-Based Cationic Organic Polymer

To increase the radioactivity of ^99mTc in the eluent to meet the needs of medical diagnosis, finding a new type of high-efficiency molybdenum and technetium separation material is important. In this study, a viologen-based cationic organic polymer (VBCOP) was prepared and its adsorption toward ReO^-₄ and MoO^2-₄ was studied. The influence of pH, the initial concentration of Mo and Re was investigated. In addition, the sorption performance of VBCOP on Re in solutions containing different molar ratios between Re (10 mg·L^-1) and Mo was studied. The results show that VBCOP has excellent sorption performance for Re and good selectivity. VBCOP can show good adsorption performance in a wide range of pH, and the effect of alkaline conditions on Mo is greater than that on Re. The saturated sorption capacity of VBCOP for ReO^-₄ reaches 597 mg·g^-1 and the saturated sorption capacity for MoO^2-₄ is 196 mg·g^-1. Under neutral conditions, and when the Re∶Mo molar ratio is 1∶10 000, VBCOP can still exhibit a certain adsorption effect on ReO^-₄ (35%), which is expected to pave the way for further research.