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Different Interaction Mechanisms of Eu(III) and Am-243(III) with Carbon Nanotubes Studied by Batch, Spectroscopy Technique and Theoretical Calculation
Wang, XX; Yang, SB; Shi WQ(石伟群); Shi, WQ; Li, JX; Hayat, T; Wang, XK
2015
Source PublicationENVIRONMENTAL SCIENCE & TECHNOLOGY
ISSN0013-936X
EISSN1520-5851
Volume49Issue:19Pages:11721-11728
SubtypeArticle
AbstractHerein the sorption of Eu(III) and Am-243(III) on multiwalled carbon nanotubes (CNTs) are studied, and the results show that Eu(III) and Am-243 (III) could form strong inner-sphere surface complexes on CNT surfaces. However, the sorption of Eu(III) on CNTs is stronger than that of Am-243(III) on CNTs, suggesting the difference in the interaction mechanisms or properties of Eu(III) and Am-243(III) with CNTs, which is quite different from the results of Eu(III) and Am-243(III) interaction on natural clay minerals and oxides. On the basis of the results of density functional theory calculations, the binding energies of Eu(III) on CNTs are much higher than those of Am-243(III) on CNTs, indicating that Eu(III) could form stronger complexes with the oxygen-containing functional groups of CNTs than Am-243(III), which is in good agreement with the experimental results of higher sorption capacity of CNTs for Eu(III). The oxygen-containing functional groups contribute significantly to the uptake of Eu(III) and Am-243(III), and the binding affinity increases in the order of S-OH < S-COOH < S-COO-. This paper highlights the interaction mechanism of Eu(III) and Am-243(III) with different oxygen-containing functional groups of CNTs, which plays an important role for the potential application of CNTs in the preconcentration, removal, and separation of trivalent lanthanides and actinides in environmental pollution cleanup.
Subject AreaEngineering; Environmental Sciences & Ecology
DOI10.1021/acs.est.5b02679
Indexed BySCI ; ADS ; EI
Language英语
WOS Research AreaEngineering, Environmental ; Environmental Sciences
WOS SubjectEngineering ; Environmental Sciences & Ecology
WOS IDWOS:000362629100054
ADS Bibcode2015EnST...4911721W
ADS URLhttps://ui.adsabs.harvard.edu/abs/2015EnST...4911721W
ADS CITATIONShttps://ui.adsabs.harvard.edu/abs/2015EnST...4911721W/citations
Citation statistics
Cited Times:19 [ADS]
Document Type期刊论文
Identifierhttp://ir.ihep.ac.cn/handle/311005/228769
Collection多学科研究中心
Recommended Citation
GB/T 7714
Wang, XX,Yang, SB,Shi WQ,et al. Different Interaction Mechanisms of Eu(III) and Am-243(III) with Carbon Nanotubes Studied by Batch, Spectroscopy Technique and Theoretical Calculation[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2015,49(19):11721-11728.
APA Wang, XX.,Yang, SB.,石伟群.,Shi, WQ.,Li, JX.,...&Wang, XK.(2015).Different Interaction Mechanisms of Eu(III) and Am-243(III) with Carbon Nanotubes Studied by Batch, Spectroscopy Technique and Theoretical Calculation.ENVIRONMENTAL SCIENCE & TECHNOLOGY,49(19),11721-11728.
MLA Wang, XX,et al."Different Interaction Mechanisms of Eu(III) and Am-243(III) with Carbon Nanotubes Studied by Batch, Spectroscopy Technique and Theoretical Calculation".ENVIRONMENTAL SCIENCE & TECHNOLOGY 49.19(2015):11721-11728.
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