Efficient removal of U(Ⅵ)from wastewater by a sponge-like 3D porous architecture with hybrid electrospun nanofibers

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外文摘要：Removal of uranium(Ⅵ)from nuclear wastewater is urgent due to the global nuclear energy exploitation.This study synthesized novel sponge-like 3D porous materials for enhanced uranium adsorption by combining electrospinning and fibrous freeze-shaping techniques.The materials possessed an organic-inorganic hybrid architecture based on the electrospun fibers of polyacrylonitrile(PAN)and SiO2.As a sup-porting material,the surface of fibrous SiO2 could be further functionalized by cyano groups via(3-cyanopropyl)triethoxysilane.All the cyano groups were turned into amidoxime(AO)groups to obtain a amidoxime-functionalized sponge(PAO/SiO2-AO)through the subsequent ami-doximation process.The proposed sponge exhibited enhanced uranium adsorption performance with a high removal capacity of 367.12 mg/g,a large adsorption coefficient of 4.0 × 104 mL/g,and a high removal efficiency of 97.59％.The UO2+adsorption kinetics perfectly conformed to the pseudo-second-order reaction.The sorbent also exhibited an excellent selectivity for UO22+with other interfering metal ions.

外文关键词：

Uranium removalSpongeAmidoximationOrganic-inorganic hybrid structureElectrospinning

作者：

Lin Hu、Lin Chen、Xian-kun Wu、Rui Luo、Rong-guan Lv、Zheng-hao Fei、Feng Yang

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作者单位：

School of Chemistry and Environmental Engineering,Yancheng Teachers University,Yancheng 224051,China

Jiangsu Province Engineering Research Center of Agricultural Breeding Pollution Control and Resource,Yancheng 224051,China

Jiangsu Nanda Huaxing Science and Technology of Environmental Protection Co.Ltd.,Yancheng 224001,China

基金：

Opening Project of the Jiangsu Province Engineering Research Center of Agricultural Breeding Pollution Control and ResourceNatural Science Research Project of Jiangsu Higher Education Institutions of ChinaNatural Science Research Project of Jiangsu Higher Education Institutions of ChinaNatural Science Research Project of Jiangsu Higher Education Institutions of China

项目编号：

2021ABPCR01020KJB15003521KJD61000421KJA530004

出版年：

2024

DOI：

10.1016/j.wse.2023.11.001

水科学与水工程

河海大学

水科学与水工程

CSTPCDEI

影响因子：0.432

ISSN：1674-2370

年,卷(期)：2024.17(2)