| Status | 已發表Published |
| Introduction of benzotriazole into graphene oxide for highly selective coadsorption of An and Ln: Facile synthesis and theoretical study | |
Ding, Jie; Tang, Siqun; Chen, Xiao; Ding, Mu; Kang, Jinyang; Wu, Rulei; Fu, Zhihai; Jin, Yongdong; Li, Laicai; Feng, Xiaojie; Wang, Ruibing ; Xia, Chuanqin
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| 2018-07-15 | |
| Source Publication | CHEMICAL ENGINEERING JOURNAL
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| ISSN | 1385-8947 |
| Volume | 344Pages:594-603 |
| Abstract | The removal of actinide (An) and lanthanide (Ln) elements from aqueous solution is a significant strategy for the safe disposal of radioactive wastes. Herein we presented a 5-methylbenzotriazole modified graphene oxide (MBTA-GO) as a novel adsorbent, in which benzotriazole group was used as targeted sorption site bearing strong affinity toward An-Ln (An and Ln) ions for the first time. MBTA-GO was characterized by Fourier transformed infrared spectroscopy (FT-IR), thermal gravimetric analysis (TGA) and X-ray photoelectron spectroscopy (XPS). The effect of pH and initial concentration on combined adsorption of An-Ln were examined, and the results showed that the adsorption of metal ions on MBTA-GO was strongly dependent on pH in multi-cation solution, and MBTA-GO exhibited excellent An-Ln selectivity (selectivity coefficients are more than 99%), overwhelming majority of other reported adsorbents. The cycle experiments revealed that the MBTA-GO exhibited good reusability and structural stability. By density functional theory (DFT) calculation, the binding energy of Cation-MBTA-GO followed the order of Th(IV) > U(VI) > Eu(III) > La(III) > Sr(II) > Cs(I), suggesting that the benzotriazole groups were preferentially responsible for An-Ln ions on MBTA-GO, which is in well agreement with the experimental results. Finally, the mechanism of selective coadsorption was revealed, which is the synergistic effect of chemical complexation and electrostatic interaction. |
| Keyword | Graphene oxide 5-Methylbenzotriazole Actinides Lanthanides Selectivity Density functional theory |
| DOI | 10.1016/j.cej.2018.03.114 |
| URL | View the original |
| Indexed By | SCIE |
| Language | 英語English |
| WOS Research Area | Engineering |
| WOS Subject | Engineering, Environmental ; Engineering, Chemical |
| WOS ID | WOS:000430695300060 |
| Publisher | ELSEVIER SCIENCE SA |
| The Source to Article | WOS |
| Fulltext Access | |
| Citation statistics | |
| Document Type | Journal article |
| Collection | Institute of Chinese Medical Sciences |
| Recommended Citation GB/T 7714 | Ding, Jie,Tang, Siqun,Chen, Xiao,et al. Introduction of benzotriazole into graphene oxide for highly selective coadsorption of An and Ln: Facile synthesis and theoretical study[J]. CHEMICAL ENGINEERING JOURNAL,2018,344:594-603. |
| APA | Ding, Jie,Tang, Siqun,Chen, Xiao,Ding, Mu,Kang, Jinyang,Wu, Rulei,Fu, Zhihai,Jin, Yongdong,Li, Laicai,Feng, Xiaojie,Wang, Ruibing,&Xia, Chuanqin.(2018).Introduction of benzotriazole into graphene oxide for highly selective coadsorption of An and Ln: Facile synthesis and theoretical study.CHEMICAL ENGINEERING JOURNAL,344,594-603. |
| MLA | Ding, Jie,et al."Introduction of benzotriazole into graphene oxide for highly selective coadsorption of An and Ln: Facile synthesis and theoretical study".CHEMICAL ENGINEERING JOURNAL 344(2018):594-603. |
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