X-Ray Photoelectron Spectroscopic Characterization of Iron Oxide Nanoparticles

Magnetically-oriented type I collagen-SiO2@Fe3O4 rods composite hydrogels tuning skin cell growth

“…2(b)). The two photoelectron peaks at 710.6 and 724.1 eV are very close to those previously reported for core-level Fe2p lines in magnetite [45], confirming the phase of the iron oxide nanoparticles on silica surface. As a first insight into the magnetic properties of the modified nanorods, we observed that applying a magnet at the proximity of a SiO2@Fe3O4 aqueous suspension allows for its fast and efficient attraction to the glassware wall (Fig.…”

Molecular species forming at the α-Fe2O3 nanoparticle–aqueous solution interface

“…Also, a very recent valence PE spectroscopy study from a powder of 7 nm diameter iron-oxide NPs exhibits a single broad Fe 3d derived peak. 73 Yet, theoretical calculations 74 do reproduce the split as shown by the sticks in Fig. 1C .…”

Structural and morphological tuning of iron oxide polymorphs by ECR plasma-assisted thermal oxidation

“…65 Satellites associated with the Fe2p core level spectra were used to determine the oxidation states of iron. 63 It was mentioned by Radu et al 66 that the clearly visible satellite peak at 718 eV indicates the presence of maghemite or hematite, and the absence of the satellite peak indicates the presence of the magnetite phase. 67,68 Fig.…”

“…The highest intensity/area of satellite peaks with the prominent Fe2p peak of the M-S3 lm represents the hematite phase, conrming that the Fe 3+ cations are octahedrally coordinated in a crystal structure. 66 A comparison of the XPS spectra of lm M-S1 and M-S3 showed that the broad peak observed at 719 eV had a very low intensity and was slightly shied to the lower binding energy of the Fe2p 3/2 main peak, indicating the presence of the maghemite phase according to Fujii et al 67 The high-resolution XPS spectra recorded in the energy range corresponding to the Fe2p state for N-Fe lms processed using PATO are shown in Fig. 4.…”