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Efficient cathode-ray scintillating metal-organic frameworks are constructed from a π-conjugated luminescent motif and light Ca(ii) ions. The luminescence self-quenching pathway has been effectively hindered through coordination. In situ vacuum ultraviolet fluorescent spectra have shown the excitons recombining in the scintillation process for the first time.
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http://dx.doi.org/10.1039/c9cc06760d | DOI Listing |
Small Methods
September 2025
School of Chemical Engineering, Yeungnam University, Gyeongsan, 38541, South Korea.
Constructing robust electrocatalysts and shedding light on the processes of surface reconstruction is crucial for sustained hydrogen production and a deeper understanding of catalytic behavior. Here, a novel ZIF-67-derived lanthanum- and phosphorus-co-doped CoO catalyst (La, P-CoO) has been reported. X-ray absorption spectroscopy (XAS) confirms that the La and P co-doping reduces the coordination number (CN), improves oxygen vacancies (O), and leads to lattice distortion.
View Article and Find Full Text PDFEnergy Fuels
August 2025
Group of Energy Materials, École polytechnique fédérale de Lausanne (EPFL), Rue de l'Industrie 17, Sion, Valais 1951, Switzerland.
Anion exchange membrane water electrolyzers (AEMWEs) offer a promising alternative to proton exchange membrane (PEM) electrolyzers, leveraging non-precious-metal catalysts and alkaline electrolytes for cost reduction. However, challenges persist in achieving long-term durability, high current densities, and stable membrane performance. While previous studies have examined AEM development, a comprehensive structural-electrochemical analysis of AEMWE components under prolonged operation remains limited.
View Article and Find Full Text PDFNat Commun
August 2025
Department of Chemical and Materials Engineering, University of Alberta, Edmonton, AB, Canada.
Durable and highly active oxygen electrocatalysts are crucial to the large-scale application of rechargeable zinc-air batteries. Here we utilize the N unit in phthalocyanine molecule to trap the tungsten atoms scratched off from the tungsten carbide milling balls and place the obtained W-N unit adjacent to the Fe-N units from iron (Ⅱ) phthalocyanine, resulting in highly active Fe-N/W-N diatomic sites with well-pronounced 3d-5d hybrid for efficient and durable oxygen electrocatalysis. The electron distribution of the Fe-N site is optimized by the neighboring W-N site, which facilitates the O activation and the desorption of *OH and enhances the catalytic activity of the Fe-N site.
View Article and Find Full Text PDFAdv Mater
August 2025
State Key Lab of Metal Matrix Composites, School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China.
How to proficiently and accurately explore the vast compositional space of materials and accelerate the development of new materials with outstanding properties, especially structurally complex high-entropy oxides (HEOs), remains a challenge in materials science. To address this, a state-of-the-art hybrid flow machine learning (HFML) framework is proposed, which combines ensemble learning, unsupervised learning, and Bayesian optimization, enabling efficient discovery of hidden patterns and comprehensive exploration of the component space. Based on the proposed HFML, a new HEO cathode material is screened out from over 2 million candidates for sodium-ion batteries (NaLiNiCuFeCoMnTiO), which shows excellent cycling stability (capacity retention of 83.
View Article and Find Full Text PDFAdv Sci (Weinh)
August 2025
School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu, 225002, P. R. China.
Vanadium-based metal-organic framework (V-MOF) cathodes in aqueous zinc-ion batteries (AZIBs) are prone to be pronounced volumetric expansion during charging/discharging processes, which causes structural collapse, capacity fading, and compromised cycling stability. Herein, a series of novel hybrid nanomaterials (Br@P-X) are successfully prepared via a one-step solution method by confining polyoxometalates (POMs) within the pores of the V-MOF and precisely controlling the POMs loadings. The synergistic structural and functional interactions between the porous MOF framework and the uniformly dispersed POMs, as well as the precise tuning of guest POM clusters endow the system with unique electrochemical behavior.
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