Evolution behavior and active oxygen quantification of reaction mechanism on cube Cu2O for CO self-sustained catalytic combustion and chemical-looping combustion

Dramatic acceleration by visible light and mechanism of AuPd@ZIF-8-catalyzed ammonia borane methanolysis for efficient hydrogen production

“…S4 and Table S2†), as reported previously upon related treatments. 16,26 The high-angle annular dark field coupling with scan transmission electron microscopy (HAADF-STEM) images were utilized to show the nanostructure of such an alloy and the representative NP. As shown in Fig.…”

“…The signals representing the binding energies of Au 4f and Pd 3d demonstrate that Au( i ) and Pd( ii ) ions are present, which is preceded by the oxidation of the AuPdNPs by air between the time of synthesis and that of measurement. 26 By comparing bimetallic alloys and monometallic NPs, the electronic influence between Au and Pd is analyzed. Here, the binding energies of Au 4f (83.4 eV and 87.1 eV) of the AuPd alloy undergo a shift to values lower than those of AuNPs (84.0 eV and 87.9 eV) (Table S3†).…”

“…22 This H 2 generation method possesses several significant advantages towards current applications: 21,22 (i) AB is highly methanol soluble at room temperature (23% wt); 23 (ii) it is highly stable in methanol without a catalyst; (iii) H 2 produced by AB methanolysis is pure from ammonia impurities that are poisoning fuel cells; (iv) this reaction generates H 2 below 0 °C upon catalysis, which might be useful for portable devices under cold temperature conditions; (v) the AB methanolysis product formed, NH 4 B(OCH 3 ) 4 , can regenerate AB upon reaction with LiAlH 4 and NH 4 Cl under ambient conditions. 24 Although first-row late transition-metal-based nanocatalysts are privileged, 18,24–26 there are also reports using more efficient noble-metal catalysts. 23,27…”

“…Recently, the plasmon-induced enhancement of catalytic reactivity has received attention for AB dehydrogenation under visible-light irradiation 25,26 given the excitation of plasmon that accelerates reactions. 26–30 The dissipation of energy proceeds by the scattering of radiative photons or the induction of charge transfer, provoking reaction rate enhancement.…”

“…Recently, the plasmon-induced enhancement of catalytic reactivity has received attention for AB dehydrogenation under visible-light irradiation 25,26 given the excitation of plasmon that accelerates reactions. 26–30 The dissipation of energy proceeds by the scattering of radiative photons or the induction of charge transfer, provoking reaction rate enhancement. 31 Local collective heating, 30 heterogeneity of charges at the surface, 32 and hot electrons injected from the plasmon are known to accelerate hydrogen production upon AB hydrolysis.…”