期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 59, 期 37, 页码 15997-16001出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.202007383
关键词
artificial spider silk protein fiber; chelates; mechanical strength; uranium extraction
资金
- Hainan Science and Technology Major Project [ZDKJ2019013]
- National Natural Science Foundation of China [41966009, U1967213]
- National Key R&D program of China [2018YFE0103500]
The unique three-dimensional structure of spidrion determines the outstanding mechanical properties of the spider silk fiber. Inspired by the similarity of the three-dimensional structure of superb-uranyl binding protein (SUP) to that of spidroin, a dual-SUP (DSUP) chimeric protein fiber with high tensile strength is designed. The DSUP hydrogel fiber exhibits a loofah-shape structure by the cross-interaction of the protein nanofiber. Full exposure of abundant functional uranyl-binding sites in the stretchable loofah-shape hydrogel protein fiber give the DSUP fiber a groundbreaking uranium extraction capacity of 17.45 mg g(-1)with an ultrashort saturation time of 3 days in natural seawater. This work reports the design of an adsorbent with ultrahigh uranium extraction capacity and explores a strategy for fabricating artificial high-strength functional non-spidroin protein fiber.
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