Decontamination of radioactive TcO₄⁻ from nuclear wastes is increasingly crucial for spent nuclear fuel reprocessing and environmental remediation. In the presence of a large excess of competitive anions, the selective separation of TcO₄⁻ is a major challenge for adsorbents. Herein, by using pre-radiation induced grafting polymerization, we have modified economical and environmentally friendly cellulose microspheres to obtain quaternary phosphonium decorated TcO₄⁻ adsorbents with an ultra-high selectivity, designated CMS-g-VBPPh₃NO₃. The prepared materials show adsorption capacities of 251 mg g⁻¹ (for the surrogate Re). The selective factor against NO₃⁻ in 0.5 mol kg⁻¹ HNO₃ is as high as 168, showing excellent anion-exchange selectivity towards TcO₄⁻. Moreover, CMS-g-VBPPh₃NO₃ was packed in column for treating simulated acidic waste solutions containing Cs, Sr, Eu, Zr, Ru, U and Re, and it showed excellent Re separation performance. Tracer amount of ^99mTc experiments showed that comparing to ReO₄⁻, CMS-g-VBPPh₃NO₃ has a better adsorption selectivity for TcO₄⁻.

放射性TCO的去污₄ ^-从核废料是废核燃料后处理和环境整治日益重要。在大量过量的竞争性阴离子的存在下，TCO的选择性分离₄ ^-为吸附剂的一个重大挑战。在本文中，通过使用诱导接枝聚合前的辐射，我们修改经济和环保的纤维素微球体以获得装饰TCO季鏻₄ ^-吸附剂与超高选择性，指定CMS-克-VBPPh ₃ NO ₃。制备的材料显示出251 mg g ^-1的吸附容量（用于代理Re）。对NO的选择性因子₃ ^-在0.5摩尔千克^-1 HNO ₃是高达168，示出了向TCO优良阴离子交换选择性₄ ^- 。此外，CMS- g -VBPPh ₃ NO ₃装填在处理模拟酸性废液中的Cs，Sr，Eu，Zr，Ru，U和Re的色谱柱中，表现出出色的Re分离性能。的示踪剂量^99米锝实验表明，比较REO ₄ ^-，CMS-克-VBPPh ₃ NO ₃具有用于TCO更好的吸附选择性₄^-。