Encapsulation of nanoparticles with Xe adsorption sites into MOFs for enhanced Xe/Kr separation
Year: 2025
Type: article
Abstract: Xenon (Xe) and krypton (Kr) are important gases with significant industrial and medical applications. Metal-organic frameworks (MOFs) are a promising class of sorbent materials for Xe/Kr separation. To enhance the Xe/Kr separation performance of MOFs, we develop a strategy to encapsulate Pt nanoparticles into MOFs to introduce strong Xe adsorption sites. Xe and Kr adsorption and separation studies show that Pt@UiO-66 exhibits 21% higher Xe uptake capacity and a 7% increase in Xe/Kr selectivity compared to UiO-66 due to the introduced Xe adsorption sites, despite the Brunauer-Emmett-Teller (BET) surface area decreasing. These findings have led to an 88% extension of column breakthrough time during Xe/Kr separation under identical conditions. We further demonstrate that this approach can be extended to other MOFs with potential for Xe/Kr separation.
Source: RSC Advances
DOI: 10.1039/d5ra03389f
Authors: Chunhui Wu, He Zhou, Xiaoling Wu, Huimin Xu, Youshi Zeng, Xinxin Chu, Wei Liu
Language: English
Subfield: Inorganic Chemistry
Field: Chemistry
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $1,042
Funders: National Natural Science Foundation of China, Chinese Academy of Sciences, Youth Innovation Promotion Association of the Chinese Academy of Sciences, Natural Science Foundation of Gansu Province, Shanghai Rising-Star Program, Natural Science Foundation for Young Scientists of Shanxi Province, Young Scientists Fund, Youth Innovation Promotion Association
OpenAlex ID: W4412822645