Results 181 to 190 of about 194,299 (398)

Mixed‐Metal Promotion in a Manganese‐Molybdenum Oxynitride as Catalyst to Integrate C─C and C─N Coupling Reactions for the Direct Synthesis of Acetonitrile from Syngas and Ammonia

open access: yesAdvanced Materials, EarlyView.
Transition metal oxy/carbo‐nitrides show great promise as catalysts for sustainable processes. A Mn‐Mo mixed‐metal oxynitride attains remarkable performance for the direct synthesis of acetonitrile, an important commodity chemical, via sequential C─N and C─C coupling from syngas (C1) and ammonia (N1) feedstocks.
M. Elena Martínez‐Monje   +7 more
wiley   +1 more source

Strain‐Engineered Monolithic Multi‐Band LEDs for Simultaneous Short‐Wavelength and Mid‐Wavelength Infrared Emission

open access: yesAdvanced Materials, EarlyView.
A monolithic multi‐band LED capable of simultaneously emitting short‐ and mid‐wavelength infrared light is demonstrated, enabled by Sb doping–driven strain engineering that achieves balanced strain compensation and coherent epitaxy in the quantum wells.
Hee Joon Jung   +12 more
wiley   +1 more source

Microstructural Evolution Dynamics in Rapid Joule Heating Densification of High‐Nickel Cathodes

open access: yesAdvanced Materials, EarlyView.
Introduction of high‐temperature rapid Joule heating combined with two‐step sintering drives full densification while suppressing grain coarsening in high‐Ni cathodes. By activating lattice and grain boundary diffusion over surface diffusion, this approach achieves dense microstructures without excessive grain growth, offering insights into the ...
Min‐Ho Kim   +15 more
wiley   +1 more source

Shapeshifting Nanocatalyst for CO2 Conversion

open access: yesAdvanced Materials, EarlyView.
A multi‐modal in situ characterization of Ag‐Cu nanoparticles during CO2 photoreduction sheds light on dynamic transformations occurring during reaction. The Cu(core)‐Ag(shell) nanoparticles present the Ag replacement by Cu atoms. Ag is trapped at the subsurface forming a Ag‐Cu‐O phase, and the nanoparticle spreads over the substrate.
Gustavo Zottis Girotto   +10 more
wiley   +1 more source

Strong Stabilization of Co Nanoparticles by CeO2‐x Clusters in Inverse CeOx/Co Catalysts for Enhanced CO2 Methanation

open access: yesAdvanced Materials, EarlyView.
Inverse CeOx/Co catalysts are promising new materials for CO2 methanation. Operando spectroscopy reveals that small, reducible CeO2‐x clusters effectively stabilize Co nanoparticles from sintering during H2 reduction and promote CO2 activation at the Co‐CeO2 interface.
Yu Gao   +7 more
wiley   +1 more source

Role of Liquid Composition in the Transient Liquid Assisted Growth of Superconducting YBa2Cu3O7‐δ Films

open access: yesAdvanced Materials, EarlyView.
The Y supersaturation in the [Ba‐Cu(I/II)‐O] transient liquid composition is the driving force toward YBCO nucleation and growth in TLAG. Tuning the initial (Ba:Cu) molar ratio in the ink composition determines the YBCO epitaxial nucleation through supersaturation control.
Lavinia Saltarelli   +12 more
wiley   +1 more source

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