缺函数
铀
铀酰
多金属氧酸盐
活性氧
材料科学
核化学
无机化学
化学
有机化学
冶金
生物化学
催化作用
数学
纯数学
作者
Peiheng Shi,Xiaomei Wang,Hailong Zhang,Qiwen Sun,Ao Li,Miao Yu,Cen Shi,Jingwen Guan,Shicheng Gong,Juan Diwu
标识
DOI:10.1021/acsami.2c11226
摘要
The chemical toxicity and the oxidative stress induced by the internal exposure of uranium is responsible for the long-term adverse effect of in vivo contamination of uranium. An agent with simultaneous removal capability of uranium and excess reactive oxygen species (ROS) is highly desired. Herein, the lacunary Keggin-type polyoxometalate (POM) is demonstrated to selectively bind with uranyl ions in the presence of excess essential divalent ions and exhibits a compelling ROS scavenging efficiency of 78.8%. In vivo uranium decorporation assays illustrate the uranium sequestration efficiencies of 74.0%, 49.4%, and 37.1% from kidneys by prophylactic, prompt, and delayed administration of lacunary POM solution, respectively. The superior ROS quenching and uranium removal performance in comparison with all reported bifunctional agents endow lacunary polyoxometalates as novel agents to effectively protect people from injuries caused by the internal exposure of actinides.
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