Metal-organic frameworks (MIL-68) decorated graphene oxide for highly efficient enrichment of uranium

被引：31

作者：

Zhu, Jiahui ^{[1
,3
]}

Zhang, Hongsen ^{[1
]}

Liu, Qi ^{[1
,3
,4
]}

Wang, Cheng ^{[2
]}

Sun, Zhiyao ^{[2
]}

Li, Rumin ^{[1
,3
,4
]}

Liu, Peili ^{[5
]}

Zhang, Milin ^{[1
]}

Wang, Jun ^{[1
,3
,4
,5
]}

机构：

[1] Harbin Engn Univ, Minist Educ, Key Lab Superlight Mat & Surface Technol, Harbin 150001, Heilongjiang, Peoples R China

[2] Heilongjiang Univ, Minist Educ, Key Lab Funct Inorgan Mat Chem, Harbin 150086, Heilongjiang, Peoples R China

[3] Harbin Engn Univ, Coll Mat Sci & Chem Engn, Harbin 150001, Heilongjiang, Peoples R China

[4] Harbin Engn Univ, Capital Management Co Ltd, Harbin 150001, Heilongjiang, Peoples R China

[5] Harbin Engn Univ, Inst Adv Marine Mat, Harbin 150001, Heilongjiang, Peoples R China

来源：

JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS | 2019年 / 99卷

基金：

中国国家自然科学基金; 对外科技合作项目（国际科技项目）;

关键词：

Metal-organic frameworks; Graphene oxide; Uranium(VI) adsorption; METHYLENE-BLUE; ADSORPTION; REMOVAL; CARBON; SORPTION; NANOCOMPOSITE; RECOVERY; IONS; VI; KINETICS;

D O I：

10.1016/j.jtice.2019.01.008

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

A novel adsorbent, metal organic framework (MIL-68) decorated graphene oxide (MIL-68/GO) composites were prepared in this study. The synthesized sorbent was well-characterized by Transmission Electron Microscope (TEM), X-ray Diffraction (XRD) and Fourier Transform Infrared Spectroscopy (FTIR), which confirmed the MIL-68/GO composites were synthesized successfully. The effects of initial uranium (VI) concentration, temperature, pH and contact time on uranium (VI) sorption behaviour were systematically studied by a series of adsorption experiments. The results showed that the optimal pH was 8. The Langmuir model showed better correlation with the isotherm data, the maximum adsorption capacity was 594.66 mg/g at 298.15 K. The adsorption process fitted well with a pseudo-second-order model. Furthermore, the MIL-68/GO composites also showed good adsorption properties in simulated seawater. At the uranium(VI) concentration 3 mu g/L with multi-coexisting metal ions, the distribution coefficient (K-d) value of uranium(VI) was 2.29 x 10(4) mL/g, which determined that MIL-68/GO composites were a promising material for the enrichment of uranium(VI). (C) 2019 Published by Elsevier B.V. on behalf of Taiwan Institute of Chemical Engineers.

引用

页码：45 / 52

页数：8

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