期刊
ADVANCED MATERIALS
卷 30, 期 12, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adma.201706507
关键词
extraction; molecular imprinting technology; porous aromatic frameworks; selectivity; uranium ions
类别
资金
- National Basic Research Programme of China (973 Programme) [2012CB821700, 2014CB931800]
- National Natural Science Foundation of China (NSFC) [21401069, 21501024, 21604008]
- Major International (Regional) Joint Research Project of NSFC [21120102034]
- Opening Project of the Key Laboratory of Polyoxometalate Science of the Ministry of Education
Selective extraction of uranium from water has attracted worldwide attention because the largest source of uranium is seawater with various interferenceions (Na+, K+, Mg2+, Ca2+, etc.). However, traditional adsorbents encapsulate most of their functional sites in their dense structure, leading to problems with low selectivity and adsorption capacities. In this work, the tailor-made binding sites are first decorated into porous skeletons, and a series of molecularly imprinted porous aromatic frameworks are prepared for uranium extraction. Because the porous architecture provides numerous accessible sites, the resultant material has a fourfold increased ion capacity compared with traditional molecularly imprinted polymers and presents the highest selectivity among all reported uranium adsorbents. Moreover, the porous framework can be dispersed into commercial polymers to form composite components for the practical extraction of uranium ions from simulated seawater.
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