摘要
The persistent need for sorbents capable of efficiently extracting selenium from radioactive wastewater has been a significant challenge.Herein,we introduce SCU-CPN-5,a robust and saleable adsorbent designed through principles of valence and configuration matching,which achieves remarkable removal of selenium oxo-anions from nuclear waste liquids.SCU-CPN-5 demonstrates unprecedented adsorption capacities,with 617 mg/g for SeO_(4)^(2-)and 333 mg/g for SeO_(3)^(2-).Additionally,it exhibits a removal efficiency of up to 99.7%for environmentally relevant concentrations of SeO_(4)^(2-).Notably,we employed in-situ Fouriertransform infrared spectroscopy to monitor the sorption process of selenium oxo-anions into the pores of the sorbent in real time,marking a significant advancement.This research not only introduces a novel approach to the design of functional materials for nuclear wastewater management but also provides a molecular-level understanding of the adsorption mechanism.
基金
partially supported by the Intergovernmental International Cooperation of the National Key R&D Program of China(2022YFE0105300)
the National Natural Science Foundation of China(22306136,22176139,U2267222,and U1967217)
the New Cornerstone Science Foundation through the XPLORER PRIZE
the Priority Academic Program Development of Jiangsu Higher Education Institutions(PAPD)。
