Hexagonal Cylinder Mesoporous Sorbent for Separation of Uranium Ions from Nitrate Media

被引：4

作者：

Elshehy, Emad A. ^{[1
]}

机构：

[1] Nucl Mat Author NMA, POB 530, Cairo 11728, Egypt

来源：

CHEMICAL ENGINEERING & TECHNOLOGY | 2021年 / 44卷 / 08期

关键词：

Adsorption; Mesoporous materials; Phosphonate; Silica monoliths; Uranium ion extraction; PHOSPHONIC ACID; SELECTIVE ADSORPTION; SOUTHWESTERN SINAI; SILICA; REMOVAL; EXTRACTION; COMPOSITE; KINETICS; CESIUM; OXIDE;

D O I：

10.1002/ceat.202100004

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The synthesis of mesoporous silica monoliths-based phosphonate groups (SiO2-DPTS) through immobilization of diethylphosphatoethyltriethoxysilane using the post-grafting approach to be applied as a sensitive sorbent for selective separation of U(IV) ions from aqueous solutions is described. The designed SiO2-DPTS sorbent was characterized by Fourier transform infrared, scanning electron and high-resolution transmission electron microscopy, scanning transmission electron microscopy/energy-dispersive X-ray spectroscopy, N-2 adsorption-desorption, and elemental analysis. The adsorption process was studied under different experimental conditions of pH, concentration, and time. The mechanism of interaction of SiO2-DPTS with U(VI) ions was explored and supported by density functional theory (DFT) calculations. This synthesized sorbent allows highly efficient extraction of U(IV) ions from uranyl leach liquor.

引用

页码：1470 / 1478

页数：9

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