Chemical Sciences Division, Oak Ridge National Laboratory. One Bethel Valley Road, Oak Ridge, TN, 37831, United States.
Savannah River National Laboratory, Aiken, SC, 29808, United States.
J Hazard Mater. 2019 Mar 5;365:306-311. doi: 10.1016/j.jhazmat.2018.11.007. Epub 2018 Nov 5.
Remediation of legacy nuclear waste is one of the greatest challenges faced by the US Department of Energy, with projected cleanup efforts requiring over five decades and hundreds of billions of dollars. New materials are necessary to accelerate waste processing, achieving time and financial savings. Herein we report a peroxide treatment to a Ti metal-organic framework (MOF) and related MOF-templated adsorbents. The resulting materials displayed exceptional affinity for Am(III), achieving distribution coefficients in excess of 10 mL/g, and out-performing state-of-the-art benchmarks monosodium titanate (MST) and peroxo-treated modified MST (mMST) for removal of Sr(II) and Pu(IV) from legacy nuclear waste simulant.
处理遗留核废料是美国能源部面临的最大挑战之一，预计清理工作需要五十年以上的时间和数千亿美元。需要新材料来加速废物处理，实现时间和财务上的节省。在此，我们报告了一种用过氧化氢处理钛金属有机骨架（MOF）及相关 MOF 模板吸附剂的方法。得到的材料对 Am(III)具有优异的亲和力，分配系数超过 10 mL/g，在去除模拟遗留核废料中的 Sr(II)和 Pu(IV)方面，优于先进的基准材料偏钛酸钠（MST）和用过氧化氢处理的改性 MST（mMST）。
