Preparation, characterization and PEGylation of superparamagnetic Fe₃O₄nanoparticles from ethanol medium via cathodic electrochemical deposition (CED) method

Facile and Room Temperature Synthesis of Superparamagnetic Fe3O4/C Core/Shell Nanoparticles for Efficient Removal of Pb(II) From Aqueous Solution

“…The absorption bands around 1633 cm −1 , as well as the broad absorption peaks in the range of 3300–3500 cm −1 are assigned to ‐OH group on the nanoparticles surface. It could be ascribed to the presence of the hydroxyl groups on the surface of the Fe 3 O 4 and Fe 3 O 4 /C Core/shell NPs or the adsorption of some atmospheric water during FTIR measurements . Furthermore, the peaks at approximately 1400 cm‐1 are attributed to the O−H bending vibrations .…”

“…Besides, a peak at 421 cm −1 is detected and resulted as a split of the ν2 band of the Fe−O bond. Thus, all of the observed peaks confirm the characteristic absorbance bands of magnetite (Figure a) . Noteworthy, the three mentioned absorption bands for the Fe 3 O 4 /C core/shell nanoparticles are less strong than that of naked‐Fe 3 O 4 nanoparticles, which is related to the change in the environment of the surface of Fe 3 O 4 nanoparticles after coating with carbon (Figure b).…”

Synthesis of benzo[b]xanthene‐triones and tetrahydrochromeno[2,3‐b]xanthene tetraones via three‐ or pseudo–five‐component reactions using Fe3O4@SiO2/PEtOx as a novel, magnetically recyclable, and eco‐friendly nanocatalyst

“…In Figure 1A, the absorption band at 583 cm −1 is assigned to the stretching vibration of the Fe–O band of Fe 3 O 4 . Also, the peaks at around 3427 and 1619 cm −1 in Figure 1A could be attributed to the stretching and deformation of hydroxyl groups on the surface of iron oxide nanoparticles . In Figure 1B, the peaks at 1637 and 1189 cm −1 are attributed to the stretching of C═O (amide band) and C–O groups, respectively.…”

Polyethylene Glycol-Functionalized Magnetic (Fe3O4) Nanoparticles: A Novel DNA-Mediated Antibacterial Agent

“…The less agglomerated texture may be related to the effect of polymer layer during the particle formation. The coating of Fe 3 O 4 NPs with polymer led to decrease in the magnetic interaction among the particles due to their reduce magnetism and prevented their agglomeration [16]. From the TEM image, the mean diameters of MNPs were estimated to be 3 nm and 9 nm, respectively.…”