Highly radiation-resistant Al-MOF selected based on the radiation stability rules of metal-organic frameworks with ultra-high thorium ion adsorption capacity

被引：9

作者：

Ding, Xiaofan ^{[1
]}

Zhang, Zhanjun ^{[2
]}

Li, Xinyan ^{[1
]}

Ma, Ke ^{[1
]}

Jin, Tiantian ^{[1
]}

Feng, Zhaoning ^{[1
]}

Lan, Tian ^{[1
]}

Zhao, Jing ^{[1
]}

Xiao, Songtao ^{[1
]}

机构：

[1] China Inst Atom Energy, Beijing, Peoples R China

[2] Beijing Univ Chem Technol, Coll Chem Engn, Beijing, Peoples R China

来源：

ENVIRONMENTAL SCIENCE-NANO | 2024年 / 11卷 / 05期

关键词：

REMOVAL; U(VI);

D O I：

10.1039/d4en00076e

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

For the new generation of thorium-based molten salt reactors to operate in the future, irreversible adsorption of radioactive thorium ions is required. Therefore, designing highly irradiation-resistant, high-adsorption capacity porous adsorbents for the adsorptive removal of radioactive thorium ions is a great challenge. Herein, based on the radiation stability rules of MOFs (Al3+ metal nodes and unmodified organic ligands), we used a simple solvothermal method to synthesize an aluminum-based MOF, Al-MOF. The strong beta-ray resistance with Al-MOF was confirmed by XRD and FT-IR characterization as well as adsorption isotherm experiments under beta-ray irradiation with a total dose of 1000 kGy. Additionally, Al-MOF exhibits ultra-high Th(iv) adsorption capacity (1324.64 mg g-1) and Th(iv) adsorption selectivity (KThd/KMd >= 6 x 103). This study provides guidance for the design of efficient MOF-based adsorbents for applications in spent fuel reprocessing and further expands the practical application of MOFs. Al-MOF synthesized based on MOF irradiation stability rules exhibits high stability against beta-irradiation and ultra-high thorium adsorption capacity, which proves its huge potential application value in the field of radionuclide adsorption.

引用

页码：2103 / 2111

页数：9

共 41 条

[1] Novel Metal-Organic Framework (MOF) Based Composite Material for the Sequestration of U(VI) and Th(IV) Metal Ions from Aqueous Environment [J].