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Cited by 420

The DOI matches its Crossref record; 42 of the 42 references it cites were found in a registry or an index.

Highly Sensitive and Selective Uranium Detection in Natural Water Systems Using a Luminescent Mesoporous Metal–Organic Framework Equipped with Abundant Lewis Basic Sites: A Combined Batch, X-ray Absorption Spectroscopy, and First Principles Simulation Investigation

Liu, Wei, Dai, Xing, Bai, Zhuanling, Wang, Yanlong, Yang, Zaixing, Zhang, Linjuan, Xu, Lin, Chen, Lanhua, Li, Yuxiang, Gui, Daxiang, Diwu, Juan, Wang, Jianqiang, Zhou, Ruhong, Chai, Zhifang, Wang, Shuao·2017·Environmental Science & Technology
DOI 10.1021/acs.est.6b06305
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Abstract

Uranium is not only a strategic resource for the nuclear industry but also a global contaminant with high toxicity. Although several strategies have been established for detecting uranyl ions in water, searching for new uranium sensor material with great sensitivity, selectivity, and stability remains a challenge. We introduce here a hydrolytically stable mesoporous terbium(III)-based MOF material compound 1, whose channels are as large as 27 Å × 23 Å and are equipped with abundant exposed Lewis basic sites, the luminescence intensity of which can be efficiently and selectively quenched by uranyl ions. The detection limit in deionized water reaches 0.9 μg/L, far below the maximum contamination standard of 30 μg/L in drinking water defined by the United States Environmental Protection Agency, making compound 1 currently the only MOF material that can achieve this goal. More importantly, this material exhibits great capability in detecting uranyl ions in natural water systems such as lake water and seawater with pH being adjusted to 4, where huge excesses of competing ions are present. The uranyl detection limits in Dushu Lake water and in seawater were calculated to be 14.0 and 3.5 μg/L, respectively. This great detection capability originates from the selective binding of uranyl ions onto the Lewis basic sites of the MOF material, as demonstrated by synchrotron radiation extended X-ray adsorption fine structure, X-ray adsorption near edge structure, and first principles calculations, further leading to an effective energy transfer between the uranyl ions and the MOF skeleton.

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Metadata

Authors
Liu, W., Dai, X., Bai, Z., Wang, Y., Yang, Z., Zhang, L., Xu, L., Chen, L., Li, Y., Gui, D., Diwu, J., Wang, J., Zhou, R., Chai, Z., & Wang, S.
Venue
Environmental Science & Technology
Publisher
American Chemical Society (ACS)
Published
2017-03-17
Volume
51
Issue
7
Pages
3911-3921
ISSN
  • 0013-936X (ISSN-L)
  • 1520-5851
DOI
10.1021/acs.est.6b06305
OpenAlex
W2593524057
Cited by
420
References
42
FWCI
19.58
Type
journal article
Language
en
Open access
closed

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