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Scalable and Low-energy Synthesis of Metal-organic Frameworks by a Seed-mediated Approach.
Angew Chem Int Ed Engl
January 2025
USTC: University of Science and Technology of China, Department of Chemistry, No. 96 Jinzhai Road, 230026, Hefei, CHINA.
The synthesis of metal-organic frameworks (MOFs) by low energy input has been a long-term target for practical applications yet remains a great challenge. Herein, we developed a low-energy MOF growth strategy at a temperature down to 50 °C by simply introducing seeds into the reaction system. The MOFs are continuously grown on the surface of the seeds at a growth rate dozens of times higher than that of conventional solvothermal synthesis at low temperature, while the resulting MOFs possess high crystallinity, porosity, and stability similar to solvothermal seeds.
View Article and Find Full Text PDFRecent Advances and Perspectives on Coupled Water Electrolysis for Energy-Saving Hydrogen Production.
Adv Sci (Weinh)
January 2025
Department of Chemistry, The University of Hong Kong, Hong Kong, 999077, China.
Overall water splitting (OWS) to produce hydrogen has attracted large attention in recent years due to its ecological-friendliness and sustainability. However, the efficiency of OWS has been forced by the sluggish kinetics of the four-electron oxygen evolution reaction (OER). The replacement of OER by alternative electrooxidation of small molecules with more thermodynamically favorable potentials may fundamentally break the limitation and achieve hydrogen production with low energy consumption, which may also be accompanied by the production of more value-added chemicals than oxygen or by electrochemical degradation of pollutants.
View Article and Find Full Text PDFAqueous Proteomic and Metabolomic Profiles in Low-Energy vs High-Energy Femtosecond Laser-Assisted Cataract Surgery.
Invest Ophthalmol Vis Sci
January 2025
Singapore Eye Research Institute, Singapore.
Purpose: To investigate the aqueous proteomics and metabolomics in low-energy and high-energy femtosecond laser-assisted cataract surgery (FLACS).
Methods: In this prospective observational study, 72 patients were randomized to 3 groups: low-energy FLACS, high-energy FLACS, and conventional phacoemulsification (controls). Aqueous was collected after femtosecond laser treatment or at the beginning of surgery (controls).
Evaluation of the low energy cyclotron production of the gamma emitters Cd and Cd.
Appl Radiat Isot
December 2024
National Centre for Physics, Quaid-i-Azam University Campus Islamabad, Pakistan.
Cd (T = 6.5 h) and Cd (T = 461.9 d) are promising non-standard gamma-emitting radionuclides with significant potential for SPECT use.
View Article and Find Full Text PDFEffects of Temperature Fluctuations on Surface Mobility of Atomic Steps and Oxidation Dynamics in High-Temperature Alloys.
J Am Chem Soc
January 2025
Department of Mechanical Engineering & Materials Science and Engineering Program, State University of New York at Binghamton, Binghamton, New York 13902, United States.
In contrast to the traditional perspective that thermal fluctuations are insignificant in surface dynamics, here we report their influence on surface reaction dynamics. Using real-time low-energy electron microscopy imaging of NiAl(100) under both vacuum and O atmospheres, we demonstrate that transient temperature variations substantially alter the direction of atom diffusion between the surface and bulk, leading to markedly different oxidation outcomes. During heating, substantial outward diffusion of atoms from the bulk to the surface results in step growth.
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