Results 211 to 220 of about 52,159,458 (292)

Revealing Hidden Raman Signatures Through Attention‐Based Spectral Unmixing

open access: yesAdvanced Intelligent Systems, EarlyView.
Weak Raman signatures are recovered from background‐dominated spectra using a transformer‐based, reference‐free spectral unmixing AI framework. Self‐attention reconstructs substrate contribution directly from mixed data, enabling reliable extraction of previously inaccessible vibrational features.
Dmitriy A. Poteryayev   +9 more
wiley   +1 more source

Constructing p‐d Orbital Hybridization via In Situ Generation of Bi19Br3S27/NiSx for Highly Selective Photothermal CO2 Reduction to C2H4

open access: yesAngewandte Chemie, EarlyView.
An in situ crystalline/amorphous Bi19Br3S27/NiSx interface unlocks orbital hybridization‐driven CO2 conversion. Newly formed p‐d coupling reshapes the reaction pathway, promotes C─C coupling, and steers photo‐thermal CO2 reduction toward highly selective C2H4 production.
Guangmei Gan   +6 more
wiley   +1 more source

The Promise and Challenges of Ammonia Electrosynthesis From Dinitrogen and Water Using an Electrochemical Palladium Membrane

open access: yesAngewandte Chemie, EarlyView.
Electrosynthesis of ammonia from nitrogen gas and water at ambient temperature is demonstrated using a device equipped with an electrochemical palladium membrane, which provides exclusive selectivity for the transfer of protons between the aqueous water oxidation and non‐aqueous nitrogen reduction compartments.
Ngoc‐Trung Nguyen   +11 more
wiley   +1 more source

Site Density Governs Switching Reactivity Regimes During Aerobic C─H Oxidation in Mn Single‐Atom Photocatalysts

open access: yesAngewandte Chemie, EarlyView.
Increasing the density of isolated manganese (Mn) atoms in carbon nitride (CNx) photocatalysts does not continuously improve performance. Instead, beyond a critical loading, the polymer support reorganizes, altering charge‐carrier dynamics and oxygen activation while preserving atomic dispersion.
Viktoria Velichko   +14 more
wiley   +1 more source

Development Status of Fe-V-Based High-Entropy Alloys for Nuclear Reactors. [PDF]

open access: yesMaterials (Basel)
Wu H   +7 more
europepmc   +1 more source

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