Nucleation and Growth of Fe Nanoparticles in SiO₂: A TEM, XPS, and Fe L-Edge XANES Investigation

Selective cleavage of C O bond in benzyl phenyl ether to aromatics over Pd–Fe bimetallic catalyst supported on ordered mesoporous carbon

“…Fe/OMC catalyst showed a peak of Fe 2p 3/2 at 707.4 eV, which corresponded to the characteristic peak of metallic Fe (Fig. 6(b)) [42]. Interestingly, the binding energies for Pd 3d level in the Pd-Fe/OMC catalyst (334.4 eV and 339.7 eV for 3d 5/2 and Pd 3d 3/2 , respectively) were smaller than those in the Pd/OMC catalyst ( Fig.…”

Catalytic decomposition of phenethyl phenyl ether to aromatics over Pd–Fe bimetallic catalysts supported on ordered mesoporous carbon

“…The Pd 3d spectra were deconvoluted into Pd 5/2 (solid line) and Pd 3/2 (dashed line) peaks, and then Pd 3d spectra were divided into Pd 0 (335.2 eV and 340.5 eV for 3d 5/2 and 3d 3/2 , respectively) and Pd 2+ (337.1 eV and 341.9 eV for 3d 5/2 and 3d 3/2 , respectively) species [48,49]. The Fe 2p 3/2 spectra were assigned to metallic Fe 0 (707.6 eV), Fe 2+ (709.6 eV), and Fe 3+ (710.9 eV) species [50]. Interestingly, the binding energy of Pd 3d level in the Pd 1 -Fe X /OMC (X = 0.25, 0.7, 1.5, and 4) catalysts slightly shifted toward low value with increasing Fe/Pd molar ratio ( Fig.…”

Structural, Optical, and Magnetic Properties of Zn-Doped CoFe2O4 Nanoparticles

“…In general, magnetic properties are known to be strongly influenced by annealing [24]. Few reports predicted that oxide nanoparticles tend to undergo nucleation and growth of Fe ions as a result of electron beam annealing [25]. Such Fe nanoclusters are reported to cause large magnetoresistance due a combination of geometric and spin dependent scattering [26].…”