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The separation of hydrogen isotopes using physisorption-based porous materials has emerged as a promising strategy. Here, we demonstrate that the ultramicroporous framework exhibits exceptional hydrogen isotope adsorption at 77 K and 1 bar. Dynamic breakthrough experiments indicate a D/H separation factor of 1.37, while density functional theory (DFT) calculations reveal that dense one-dimensional ultramicroporous channels and heteroatom-rich pore surfaces govern the host-guest interactions. These findings highlight as a robust ultramicroporous material with significant potential for energy-efficient hydrogen isotope separation.
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http://dx.doi.org/10.1021/acs.inorgchem.5c03389 | DOI Listing |
Nat Chem
September 2025
Department of Chemistry, University of Wisconsin-Madison, Madison, WI, USA.
Proton transfer plays an important role in both hydrogen and oxygen evolution reactions during electrocatalytic water splitting to produce green hydrogen. However, directly adapting the conventional proton/deuterium kinetic isotope effect to study proton transfer in heterogeneous electrocatalytic processes is challenging. Here we propose using the shift in the Tafel slope between protic and deuteric electrolytes, or the Tafel slope isotope effect, as an effective probe of proton transfer characteristics.
View Article and Find Full Text PDFNMR Biomed
October 2025
High-Field MR Center, Department of Biomedical Imaging and Image-Guided Therapy, Medical University of Vienna, Vienna, Austria.
The human kidneys play a pivotal role in regulating blood pressure, water, and salt homeostasis, but assessment of renal function typically requires invasive methods. Deuterium metabolic imaging (DMI) is a novel, noninvasive technique for mapping tissue-specific uptake and metabolism of deuterium-labeled tracers. This study evaluates the feasibility of renal DMI at 7-Tesla (7T) to track deuterium-labeled tracers with high spatial and temporal resolution, aiming to establish a foundation for potential clinical applications in the noninvasive investigation of renal physiology and pathophysiology.
View Article and Find Full Text PDFEcol Lett
September 2025
Department of Biology, University of Florida, Gainesville, Florida, USA.
Animal migration remains poorly understood for many organisms, impeding understanding of movement dynamics and limiting conservation actions. We develop a framework that scales from movements of individuals to the dynamics of continental migration using data synthesis of endogenous markers, which we apply to three North American bat species with unexplained high rates of fatalities at wind energy facilities. The two species experiencing the highest fatality rates exhibit a "pell-mell" migration strategy in which individuals move from summer habitats in multiple directions, both to higher and lower latitudes, during autumn.
View Article and Find Full Text PDFInorg Chem
September 2025
School of Chemistry and Chemical Engineering, Jiangsu University, Zhenjiang 212013, PR China.
Confronting the dual challenges of carbon neutrality and sustainable energy, photocatalytic CO reduction requires precise control over product selectivity. This study demonstrates that surface hydroxyl (-OH) density serves as a molecular switch for reaction pathways in graphene oxide/cobalt tetraphenylporphyrin (GO/CoTPP) hybrids. By tuning the reduction degree of GO supports via gradient hydrazine hydrate treatment (0-85%), we constructed catalysts with controlled -OH concentrations.
View Article and Find Full Text PDFJ Am Chem Soc
September 2025
Laboratory of Inorganic Synthesis and Catalysis (LSCI), Institute of Chemical Sciences and Engineering, École Polytechnique Fédéralede Lausanne (EPFL), Lausanne 1015, Switzerland.
The challenge to produce multicarbon (C) products in high current densities in the electrochemical reduction of carbon dioxide (CORR) has motivated intense research. However, the ability of solvated cations to tune and activate water for C production in the CORR has been overlooked. In this study, we report the incorporation of a covalently grown layer of functionalized phenyl groups on the Cu surface that leads to a 7-fold increase in ethylene production (to -530 mA cm) and a 6-fold increase in C products (to -760 mA cm).
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