Synthesis of core–shell structure UiO-66-NH2@Ni-MOF composite for the effective removal of uranium (VI)

IF 5.9 3区工程技术 Q1 CHEMISTRY, MULTIDISCIPLINARY

Journal of Industrial and Engineering Chemistry Pub Date : 2023-08-25 DOI:10.1016/j.jiec.2023.04.022

Qin Zhang, Lijiao Fan, Wenbin Liu, Yuming Xie, Jiangang Li, Guolin Huang

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引用次数: 5

Abstract

The core–shell structure UiO-66-NH₂@Ni-MOF was prepared by in-diffusion growth of 2D Ni-MOF on UiO-66-NH₂ using PVP (polyvinylpyrrolidone) as a structural guide. It was applied to the adsorption of U(VI) in aqueous solution. The materials were characterized by powder X-ray diffraction (PXRD), Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and energy dispersive spectrometer (EDS). The UiO-66-NH₂@Ni-MOF adsorption to U(VI) was investigated experimentally. The study showed that the adsorption of U(VI) onto UiO-66-NH₂@Ni-MOF was endothermic and spontaneous. At pH 5.00 and 308 K, the adsorption capacity was 581.40 mg/g according to Langmuir model. In addition, the adsorption process can be described by the pseudo-second-order kinetic model. The adsorption capacity was kept at 83.83% of its original one after five sorption–desorption cycles, a promising indication for repetitive usage.

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有效脱除铀(VI)的核-壳结构UiO-66-NH2@Ni-MOF复合材料的合成

以PVP(聚乙烯吡咯烷酮)为结构导向，在UiO-66-NH2上扩散生长2D Ni-MOF，制备了核壳结构UiO-66-NH2@Ni-MOF。将其应用于水溶液中对U(VI)的吸附。采用粉末x射线衍射(PXRD)、傅里叶变换红外光谱(FT-IR)、扫描电镜(SEM)、透射电镜(TEM)和能谱仪(EDS)对材料进行了表征。实验研究了UiO-66-NH2@Ni-MOF对U(VI)的吸附。研究表明:UiO-66-NH2@Ni-MOF对U(VI)的吸附是吸热自发的。在pH 5.00和308 K条件下，根据Langmuir模型，吸附量为581.40 mg/g。吸附过程可以用拟二级动力学模型来描述。经过5次吸附-解吸循环后，吸附量仍保持在原始吸附量的83.83%，具有良好的重复使用前景。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Industrial and Engineering Chemistry 工程技术-工程：化工

CiteScore

10.40

自引率

6.60%

发文量

639

审稿时长

29 days

期刊介绍： Journal of Industrial and Engineering Chemistry is published monthly in English by the Korean Society of Industrial and Engineering Chemistry. JIEC brings together multidisciplinary interests in one journal and is to disseminate information on all aspects of research and development in industrial and engineering chemistry. Contributions in the form of research articles, short communications, notes and reviews are considered for publication. The editors welcome original contributions that have not been and are not to be published elsewhere. Instruction to authors and a manuscript submissions form are printed at the end of each issue. Bulk reprints of individual articles can be ordered. This publication is partially supported by Korea Research Foundation and the Korean Federation of Science and Technology Societies.