Identification of a Fe(OH)2-like phase in the core–shell structure of nano-zero-valent Fe and its evolution when interacting with Pd2+aq ions by Mössbauer spectroscopy, XPS, and TEM

Synthesized Fe@FeOx nanoparticles (NPs) were fully characterized by spectroscopic techniques and (scanning) transmission electron microscopy to resolve the presence of a Fe(OH)2-like phase. The different phases detected in the core–shell nanostructure of these NPs were corroborated by Mössbauer and X-ray photoelectron spectroscopies. Metallic iron (Fe0), ferrous (FeII) hydroxide, magnetite (FeIII2FeIIO4), and a top layer of ferric (FeIII) oxide were identified. Interestingly, ferrous hydroxide reacted with Pd2+aq upon coating of the supporting core–shell material when Pd was added to produce Fe@FeOx/Pd NPs.

Mots clés

Iron Superparamagnetism TEM XPS TMS Core–shell

Domaines

Matériaux

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PCS-D-22-01084_edited-correctedRUBY-version3.pdf (1.77 Mo)

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Mustapha Abdelmoula : Connectez-vous pour contacter le contributeur

https://hal.science/hal-03893779

Soumis le : jeudi 19 janvier 2023-16:43:16

Dernière modification le : jeudi 11 avril 2024-13:08:13

Dates et versions

hal-03893779 , version 1 (19-01-2023)

Identifiants

HAL Id : hal-03893779 , version 1
DOI : 10.1016/j.jpcs.2022.111066

Citer

Mustapha Abdelmoula, Christian Ruby, M. Mallet, Jaafar Ghanbaja, Romain Coustel, et al.. Identification of a Fe(OH)2-like phase in the core–shell structure of nano-zero-valent Fe and its evolution when interacting with Pd2+aq ions by Mössbauer spectroscopy, XPS, and TEM. Journal of Physics and Chemistry of Solids, 2023, 172, pp.111066. ⟨10.1016/j.jpcs.2022.111066⟩. ⟨hal-03893779⟩

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