Structural evolution and characteristics of the phase transformations between α-Fe2O3, Fe3O4 and γ-Fe2O3 nanoparticles under reducing and oxidizing atmospheres

In situ regulation of micro-pore to design high performance polyimide membranes for pervaporation dehydration of isopropanol

“…This peak is in good coincidence with literature data for the cubic-structured of γ-Fe 2 O 3 (Maghemite, JCPDS card 39-1356) [48]. By applying TOPAS2 program for the X-ray diffraction pattern, we determined the approximate crystal size of around 6.6 nm.…”

Tri-functionality of Fe3O4-embedded carbon microparticles in microalgae harvesting

“…4A(a)). It is well known that the magnetic behavior of the hematite phase is very weak ferromagnetism with a low MS, compared to that of the magnetite phase [40]. The MS values of magnetic particles decrease with increasing PVP to iron nitrate ratios, which may be related to the increased content of remaining carbonaceous materials in the magnetic microparticles [41].…”

Synthesis of Ce(III)-doped Fe3O4 magnetic particles for efficient removal of antimony from aqueous solution

“…Fig. 2c shows the Fe 2p narrow-scan spectra for the Ce-doped [50,52]. The Fe 2p peaks of Ce-doped sample shifted to low binding energy could be due to the Fe III was substituted by Ce III , which changed the Fe III :Fe II ratio in samples.…”