The efficient separation of deuterium from hydrogen remains a significant challenge due to the limitations of conventional techniques,such as cryogenic distillation and the Girdler-sulfide process combined with electr...The efficient separation of deuterium from hydrogen remains a significant challenge due to the limitations of conventional techniques,such as cryogenic distillation and the Girdler-sulfide process combined with electrolysis,which are char-acterized by substantial energy demands and relatively low separation coefficients.In contrast,the quantum sieving effect,based on porous materials,offers a promising approach to overcoming these challenges.This study presents a novel application of strong adsorption sites(μ3-OH group)within the nanoporous metal-organic framework of UiO-66 for hydrogen isotope separation.By incorporating diverse organic functional groups into UiO-66,we successfully synthesized four derivative materials:UiO-66-NH_(2),UiO-66-CH_(3),UiO-66-NO_(2),and UiO-66-Ph.Experimental data reveal that the introduction of these functional groups modulated the material’s pore size and channel polarity,significantly impacting its adsorption and separation performance for hydrogen isotopes.Notably,UiO-66-NH_(2),with the smallest pore size and highest channel polarity,exhibited superior hydrogen isotope adsorption capacity and selectivity,highlighting its potential as an effective adsorbent for isotope separation.展开更多
基金supported by National Nature Science Foundation of China(22275191,22275186)the Self-deployment deployment Project Research Program of Haixi Institutes,Chinese Academy of Sciences(CXZX-2022-GH01,CXZX-2022-JQ11)the Nature Science Foundation of Fujian Province(No.2022I0037).
文摘The efficient separation of deuterium from hydrogen remains a significant challenge due to the limitations of conventional techniques,such as cryogenic distillation and the Girdler-sulfide process combined with electrolysis,which are char-acterized by substantial energy demands and relatively low separation coefficients.In contrast,the quantum sieving effect,based on porous materials,offers a promising approach to overcoming these challenges.This study presents a novel application of strong adsorption sites(μ3-OH group)within the nanoporous metal-organic framework of UiO-66 for hydrogen isotope separation.By incorporating diverse organic functional groups into UiO-66,we successfully synthesized four derivative materials:UiO-66-NH_(2),UiO-66-CH_(3),UiO-66-NO_(2),and UiO-66-Ph.Experimental data reveal that the introduction of these functional groups modulated the material’s pore size and channel polarity,significantly impacting its adsorption and separation performance for hydrogen isotopes.Notably,UiO-66-NH_(2),with the smallest pore size and highest channel polarity,exhibited superior hydrogen isotope adsorption capacity and selectivity,highlighting its potential as an effective adsorbent for isotope separation.
