A squarate-pillared titanium oxide quantum sieve towards practical hydrogen isotope separation

Qingqing Yan, Jing Wang, Linda Zhang (), Jiaqi Liu, Mohammad Wahiduzzaman, Nana Yan, Liang Yu, Romain Dupuis, Hao Wang, Guillaume Maurin, Michael Hirscher, Peng Guo (), Sujing Wang () and Jiangfeng Du
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Qingqing Yan: University of Science and Technology of China
Jing Wang: Chinese Academy of Sciences
Linda Zhang: Max Planck Institute for Intelligent Systems
Jiaqi Liu: Shenzhen Polytechnic
Mohammad Wahiduzzaman: ICGM, Univ. Montpellier, CNRS, ENSCM
Nana Yan: Chinese Academy of Sciences
Liang Yu: Shenzhen Polytechnic
Romain Dupuis: ICGM, Univ. Montpellier, CNRS, ENSCM
Hao Wang: Shenzhen Polytechnic
Guillaume Maurin: ICGM, Univ. Montpellier, CNRS, ENSCM
Michael Hirscher: Max Planck Institute for Intelligent Systems
Peng Guo: Chinese Academy of Sciences
Sujing Wang: University of Science and Technology of China
Jiangfeng Du: University of Science and Technology of China

Nature Communications, 2023, vol. 14, issue 1, 1-9

Abstract: Abstract Separating deuterium from hydrogen isotope mixtures is of vital importance to develop nuclear energy industry, as well as other isotope-related advanced technologies. As one of the most promising alternatives to conventional techniques for deuterium purification, kinetic quantum sieving using porous materials has shown a great potential to address this challenging objective. From the knowledge gained in this field; it becomes clear that a quantum sieve encompassing a wide range of practical features in addition to its separation performance is highly demanded to approach the industrial level. Here, the rational design of an ultra-microporous squarate pillared titanium oxide hybrid framework has been achieved, of which we report the comprehensive assessment towards practical deuterium separation. The material not only displays a good performance combining high selectivity and volumetric uptake, reversible adsorption-desorption cycles, and facile regeneration in adsorptive sieving of deuterium, but also features a cost-effective green scalable synthesis using chemical feedstock, and a good stability (thermal, chemical, mechanical and radiolytic) under various working conditions. Our findings provide an overall assessment of the material for hydrogen isotope purification and the results represent a step forward towards next generation practical materials for quantum sieving of important gas isotopes.

Date: 2023
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DOI: 10.1038/s41467-023-39871-x

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