Preparation and Adsorption Performance for U( VI) of ZnO@ZIF-8 Core@Shell Microspheres

被引：5

作者：

Wang Fuxiang ^{[1
]}

Chen Ziyu ^{[1
]}

Yang Weiting ^{[1
]}

Liu Lijuan ^{[1
]}

Ren Guojian ^{[1
]}

Liu Yanfeng ^{[1
]}

Pan Qinhe ^{[1
]}

机构：

[1] Hainan Univ, Coll Mat & Chem Engn, Key Lab Adv Mat Trop Isl Resources, Minist Educ, Haikou 570228, Hainan, Peoples R China

来源：

CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE | 2019年 / 40卷 / 01期

基金：

中国国家自然科学基金;

关键词：

ZnO; ZIF-8; Composite microspheres; Uranium adsorption; METAL-ORGANIC FRAMEWORKS; URANIUM; U(VI); RECOVERY; SEQUESTRATION; EXTRACTION; REMOVAL; ZIF-8; UO22+;

D O I：

10.7503/cjcu20180469

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

ZnO@ZIF-8 core@shell microspheres were synthesized by a hydrothermal method and applied for the efficient adsorption of U (VI ) from aqueous solution. The size of synthesized ZnO@ZIF-8 core@shell microspheres was in the range of 1-7 mu m. The batch experimental results revealed that the sorption of U(VI ) on ZnO@ZIF-8 was strongly dependent on pH, and the maximum sorption capacity of U(VI ) on ZnO@ZIF-8 was 145. 32 mg/g at pH = 4. 0. The adsorption mechanism could be mainly attributed to the coordination and the hydrogen bonding between ZIF-8 framework and UO22+ ions. Considering that the content of ZIF-8 in the composite microspheres was only 12. 6%, the unit adsorption capacity of U(VI ) is up to 1137 mg/g.

引用

页码：24 / 29

页数：6

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