AI Article Synopsis
- The uranium level in seawater is significantly higher than in terrestrial ores, presenting a huge potential resource for the nuclear energy industry.
- A new poly(amidoxime) (PAO) hydrogel membrane has been developed that uses sunlight polymerization for low-energy production and has a high capacity for uranium adsorption.
- The hydrogel's unique structure allows for exceptional uranium uptake efficiency, making it a promising low-cost solution for extracting uranium from seawater.
Article Abstract
The uranium level in seawater is ≈1000 times as high as terrestrial ores and can provide potential near-infinite fuel for the nuclear energy industry. However, it is still a significant challenge to develop high-efficiency and low-cost adsorbents for massively extracting uranium from seawater. Herein, a simple and fast method through low-energy consumption sunlight polymerization to direct fabrication of a poly(amidoxime) (PAO) hydrogel membrane, which exhibits high uranium adsorption capacity, is reported. This PAO hydrogel owns semi-interpenetrating structure and a hydrophilic poly(acrylamide) 3D network of hydrogel which can disperse and fix PAOs well. As a result, the amidoxime groups of PAOs exhibit an outstanding uranium adsorption efficiency (718 ± 16.6 and 1279 ± 14.5 mg g of / in 8 and 32 ppm uranium-spiked seawater, respectively) among reported hydrogel-based adsorbents. Most importantly, U-uptake capacity of this hydrogel can achieve 4.87 ± 0.38 mg g of / just after four weeks within natural seawater. Furthermore, this hydrogel can be massively produced through low-energy consumption and environmentally-friendly sunlight polymerization. This work will provide a high-efficiency and low-cost adsorbent for massive uranium extraction from seawater.
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|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6662065 | PMC |
| http://dx.doi.org/10.1002/advs.201900085 | DOI Listing |
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