Fabrication of Magnetic Fe/Zn Layered Double Oxide@Carbon Nanotube Composites and Their Application for U(VI) and 241Am(III) Removal

被引：29

作者：

Chen, Haijun ^{[1
,2
]}

Zhang, Zhibin ^{[1
,2
]}

Wang, Xiangxue ^{[1
]}

Chen, Jing ^{[4
]}

Xu, Chao ^{[4
]}

Liu, Yunhai

Yu, Zhimin ^{[3
]}

Wang, Xiangke ^{[1
,2
]}

机构：

[1] North China Elect Power Univ, Coll Environm Sci & Engn, Beijing 102206, Peoples R China

[2] East China Univ Technol, Sch Chem Biol & Mat Sci, Nanchang 330013, Jiangxi, Peoples R China

[3] Hefei Univ, Dept Biol & Environm Engn, Hefei 230000, Anhui, Peoples R China

[4] Tsinghua Univ, Inst Nucl & New Energy Technol, Collaborat Innovat Ctr Adv Nucl Energy Technol, Beijing 100084, Peoples R China

来源：

ACS APPLIED NANO MATERIALS | 2018年 / 1卷 / 05期

基金：

中国博士后科学基金;

关键词：

M-Fe/Zn-LDO@CNT nanocomposites; adsorption; radionuclide; U(VI); Am-241(III); HIGH-RESOLUTION XPS; EFFICIENT REMOVAL; DOUBLE HYDROXIDES; CLAY COMPOSITE; ADSORPTION; URANIUM; NANOCOMPOSITES; GRAPHENE; IONS; IRON;

D O I：

10.1021/acsanm.8b00528

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Magnetic Fe/Zn layered double oxide decorated carbon nanotubes (M-Fe/Zn-LDO@CNTs) composites were synthesized via a hydrothermal method with further calcination treatment. The fabricated M-Fe/Zn-LDO@CNTs were characterized by X-ray photoelectron spectroscopy, Fourier transform infrared spectroscopy, X-ray diffraction, UV-vis spectroscopy, scanning electron microscopy, and transmission electron microscopy and then applied for U(VI) elimination under diversiform experimental conditions, such as pH, temperature, ionic strength, contact time, and coexisting ions. The experimental results demonstrated that the U(VI) adsorption performance of M-Fe/Zn-LDO@CNTs was much higher than bare CNTs. The thermodynamic parameters revealed that U(VI) adsorption on M-Fe/Zn-LDO@CNTs was endothermic and spontaneous. More importantly, the adsorption performance of U(VI) on M-Fe/Zn-LDO@CNTs was still higher than similar to 89% after five cycles. Furthermore, similar to 9.5.9% of Am-241(III) could be removed by M-Fe/Zn-LDO@CNTs from solution at pH = 8.0, which confirmed that M-Fe/Zn-LDO@CNTs was an excellent material for efficient removal of long-lived lanthanides and actinides from environmental aqueous solutions in radionuclides' pollution remediation.

引用

页码：2386 / 2396

页数：21

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