Volume 132, Issue 37 pp. 16131-16135
Zuschrift

Spidroin-Inspired, High-Strength, Loofah-Shaped Protein Fiber for Capturing Uranium from Seawater

Qiuhan Yu

Qiuhan Yu

State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou, 570228 P. R. China

These authors contributed equally to this work.

Search for more papers by this author
Dr. Yihui Yuan

Dr. Yihui Yuan

State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou, 570228 P. R. China

These authors contributed equally to this work.

Search for more papers by this author
Lijuan Feng

Lijuan Feng

State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou, 570228 P. R. China

Search for more papers by this author
Tiantian Feng

Tiantian Feng

State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou, 570228 P. R. China

Search for more papers by this author
Wenyan Sun

Wenyan Sun

State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou, 570228 P. R. China

Search for more papers by this author
Prof. Ning Wang

Corresponding Author

Prof. Ning Wang

State Key Laboratory of Marine Resource Utilization in South China Sea, Hainan University, Haikou, 570228 P. R. China

Search for more papers by this author
First published: 09 June 2020
Citations: 3

Abstract

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.

The full text of this article hosted at iucr.org is unavailable due to technical difficulties.