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Superhydrophilic phosphate and amide functionalized magnetic adsorbent: a new combination of anti-biofouling and uranium extraction from seawater

Abstract

Phosphate and amide functionalized magnetic nanocomposites were successfully prepared via in situ synthesis for extraction of uranium from seawater combined with an antifouling property. The magnetic hysteresis loop and contact angle test confirm that the products prossess excellent superparamagnetic and superhydrophilic properties. Interestingly, the adsorbents exhibit clearly an inhibitory behavior for targeting marine algae with more than 50% cell death rate after 7 days, due to the synergistic inhibition of the superhydrophilic surface and chitosan. Subsequently, a series of adsorption experiments were performed. The nanocomposites exhibit a maximum adsorption capacity of 625 mg g-1 (pH=8.0), and excellent selectivity for uranium sorption with coexisting ions. In addition, adsorbents show superior regenerability and adsorption performance in simulated seawater. We suggest that the combined benefits of extraction of uranium from seawater and marine antifouling from the use of phosphate and amide functionalised magnetic adsorbents will have practical application on an industrial scale.

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Publication details

The article was received on 23 May 2018, accepted on 03 Aug 2018 and first published on 09 Aug 2018


Article type: Paper
DOI: 10.1039/C8EN00545A
Citation: Environ. Sci.: Nano, 2018, Accepted Manuscript
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    Superhydrophilic phosphate and amide functionalized magnetic adsorbent: a new combination of anti-biofouling and uranium extraction from seawater

    X. Guo, R. Chen, Q. Liu, J. Liu, J. Yu, H. Zhang, R. Li, M. Zhang and J. Wang, Environ. Sci.: Nano, 2018, Accepted Manuscript , DOI: 10.1039/C8EN00545A

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