Regulation pore size distribution of FAU deposited by Ag-oxide nanoparticles with F anions corrosion for the adsorption of CH3I

被引：1

作者：

Li, Qian ^{[1
]}

Ding, Yan ^{[1
]}

Cong, Erli ^{[1
]}

Xu, Shijia ^{[1
]}

Li, Lanxin ^{[1
]}

Ma, Xinchi ^{[1
]}

Xiao, Songtao ^{[2
]}

Gao, Chenyu ^{[1
]}

Yang, Libin ^{[1
]}

机构：

[1] Tianjin Univ Sci & Technol, Coll Chem Engn & Mat Sci, Tianjin Key Lab Brine Chem Engn & Resource Ecoutil, Tianjin 300457, Peoples R China

[2] China Inst Atom Energy, Dept Radiochem, Beijing 102413, Peoples R China

来源：

JOURNAL OF MATERIALS SCIENCE | 2024年 / 59卷 / 21期

基金：

中国国家自然科学基金;

关键词：

RADIOACTIVE IODINE; ZEOLITE; CATALYSTS; CAPTURE; DIFFUSION; SORBENTS; FLUORIDE; IMPACT; VAPOR; ACID;

D O I：

10.1007/s10853-024-09738-7

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Gaseous iodine compounds especially radioactive iodine compounds such as CH3I from nuclear spent fuel, once discharged, being destructive to the environment and harmful to human health are usually captured by solid adsorption. The faujasite (FAU) composed of Si, Al, and O elements is a kind of porous material with a high specific surface area usually used as an adsorbent and catalyst carrier. Excessive micropores in the skeleton of FAU hinder the diffusion of gas molecules to reduce the adsorption efficiency. In the NH4F solution, the skeleton of FAU was selectively corroded by F- ions and rearranged to form the construction with different the distribution of pore size. Ag-oxide nanoclusters were deposited inside the mesoporous and microporous pores of corroded FAU by the photoreduction method. To regulate the distribution of pore size, FAU deposited Ag-oxide nanocluster with more mesoporous and microporous pores providing more sufficient space for the diffusion of gaseous CH3I presented more excellent adsorption performance.

引用

页码：9276 / 9290

页数：15