A Dual-Surface Amidoximated Halloysite Nanotube for High-Efficiency Economical Uranium Extraction from Seawater | Health & Environmental Research Online (HERO)

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Citation
Tags

HERO ID

6358015

Reference Type

Journal Article

Title

A Dual-Surface Amidoximated Halloysite Nanotube for High-Efficiency Economical Uranium Extraction from Seawater

Author(s)

Zhao, S; Yuan, Y; Yu, Q; Niu, B; Liao, J; Guo, Z; Wang, N

Year

2019

Is Peer Reviewed?

Yes

Journal

Angewandte Chemie (International Edition)
ISSN: 1433-7851
EISSN: 1521-3773

Volume

Issue

Page Numbers

14979-14985

Language

English

PMID

31436013

DOI

10.1002/anie.201908762

Web of Science Id

WOS:000485593100001

Abstract

By chemical cross-linking the amidoxime group onto dual-surfaces of natural ore materials, namely halloysite nanotubes (HNTs), an efficient adsorbent, AO-HNTs, is developed. AO-HNTs show high uranium adsorption capacity of 456.24 mg g-1 in 32 ppm uranium-spiked simulated seawater. In natural seawater, AO-HNTs reach the high uranium extraction capacity of 9.01 mg g-1 after 30 days' field test. The dual-surface amidoximated hollow nanotubular AO-HNTs exhibit more coordination active sites for uranium adsorption, which is attributed to the high and fast uranium adsorption capacity. Because of the stable natural ore structure, AO-HNTs also show long service life. Benefiting from the low cost of HNTs, the cost for uranium extraction from seawater is close to the uranium price in the spot uranium market, suggesting that AO-HNTs could be used for economical extraction of uranium from the oceans.