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Extending the Use of Highly Porous and Functionalized MOFs to Th(IV) Capture

文献类型：期刊论文

作者Zhang, N; Yuan LY(袁立永); Guo WL(郭文路); Yuan, LY; Guo, WL; Luo, SZ; Chai, ZF; Shi, WQ; Chai ZF(柴之芳); Shi WQ(石伟群)
刊名ACS APPLIED MATERIALS & INTERFACES
出版日期2017
卷号9期号:30页码:25216-25224
关键词Th(IV) metal-organic frameworks sorption carboxyl groups EXAFS
ISSN号1944-8244
DOI10.1021/acsami.7b04192
文献子类Article
英文摘要Thorium separation has recently become a hot topic because of the potential application of thorium as a future nuclear fuel, while metal-organic framework (MOP) materials have received much attention in the separation field due to their unique properties. Herein, a highly porous and stable MOF, UiO-66, and its carboxyl derivatives (UiO-66-COOH and UiO-66-(COOH)(2)) were synthesized and explored for the first time for Th(IV) capture from a weak acidic solution. Although the introduction of carboxyl groups into UiO-66 leads to an obvious decrease in the surface area and pore volume, the adsorbability toward Th(IV) is greatly enhanced. At pH = 3.0, the saturated sorption capacity for Th(IV) into UiO-66(COOH)(2) reached 350 mg/g, representing one of the largest values for Th(IV) capture by solid extraction. Moreover, the functionalized MOFs show fast sorption kinetics and desirable selectivity toward Th(IV) over a range of competing metal ions. A possible mechanism for the selective recognition of Th(IV) by these MOFs was explored on the basis of extended X-ray absorption fine structure and Fourier transform infrared analysis. It is concluded that UiO-66-COOH and UiO-66-(COOH)(2) sorb Th(IV) through the coordination of carboxyl anions in the pores of the MOFs, whereas in the case of UiO-66, both the precipitation and the exchange with the organic solvent contribute to the Th(IV) uptake. This study contributes to the assessment of the feasibility of MOFs applied in actinides separation and better understanding of actinides sorption behavior in this kind of hybrid porous solid materials.
WOS关键词METAL-ORGANIC FRAMEWORKS ; AQUEOUS-SOLUTION ; DRUG-DELIVERY ; SOLID-PHASE ; REMOVAL ; THORIUM(IV) ; ADSORPTION ; EXTRACTION ; URANIUM ; SEPARATION
WOS研究方向Science & Technology - Other Topics ; Materials Science
语种英语
WOS记录号WOS:000407089300017
源URL[http://ir.ihep.ac.cn/handle/311005/284984]  
专题高能物理研究所_多学科研究中心
高能物理研究所_实验物理中心
作者单位中国科学院高能物理研究所
推荐引用方式
GB/T 7714		 Zhang, N,Yuan LY,Guo WL,et al. Extending the Use of Highly Porous and Functionalized MOFs to Th(IV) Capture[J]. ACS APPLIED MATERIALS & INTERFACES,2017,9(30):25216-25224.
APA Zhang, N.,袁立永.,郭文路.,Yuan, LY.,Guo, WL.,...&石伟群.(2017).Extending the Use of Highly Porous and Functionalized MOFs to Th(IV) Capture.ACS APPLIED MATERIALS & INTERFACES,9(30),25216-25224.
MLA Zhang, N,et al."Extending the Use of Highly Porous and Functionalized MOFs to Th(IV) Capture".ACS APPLIED MATERIALS & INTERFACES 9.30(2017):25216-25224.

入库方式： OAI收割

来源：高能物理研究所

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