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Systematic Study of the Growth of Aligned Arrays of α ...

Xin Zhang, Yongan Niu, Xiangdong Meng, Yao Li, Jiupeng Zhao, Structural evolution and characteristics of the phase transformations between α-Fe2O3, Fe3O4 and γ-Fe2O3 nanoparticles under reducing and oxidizing atmospheres, CrystEngComm, 10.1039/c3ce41269e, 15, 40, (8166), (2013).

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Solvothermal Synthesis and Characterization of Fe3O4 …

2019-12-12 · γ-Fe2O3 nanoplates were prepared by a simple solution process and could be transformed to Fe3O4 nanoplates while keeping the size and morphology unchanged after reduction in hydrazine solution. The crystal structure and surface organic groups of the nanoplates were characterized in detail. The nanoplates exhibited good dispersibility in polar solvents except water and strong dipolar ...

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Solvothermal Synthesis and Characterization of Fe3O4 …

2019-12-12 · γ-Fe2O3 nanoplates were prepared by a simple solution process and could be transformed to Fe3O4 nanoplates while keeping the size and morphology unchanged after reduction in hydrazine solution. The crystal structure and surface organic groups of the nanoplates were characterized in detail. The nanoplates exhibited good dispersibility in polar solvents except water and strong dipolar ...

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How to distinguish between Fe3O4 and g-Fe2O3?

Pure Fe3O4 is almost black in color and is significantly darker than g-Fe2O3, which has a slightly redish tint compared to Fe3O4. a-Fe2O3 is pretty much red in color, much more so than g-Fe2O3.

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Raman spectra of α-Fe2O3 hexagonal plates and …

The peaks at 538 and 668 cm-1 were attributed to Fe3O4, while the peaks at 350, 500, and 700 cm-1 belonging to γ-Fe2O3 were not observed [39,40]. The appearance of the Fe3O4 phase during reaction is a clear evidence that the valence change from Fe3+ to Fe2+ must occur due to the fact that Fe2+ ions occupy the octahedral sites of Fe3O4.

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How to distinguish between Fe3O4 and g-Fe2O3?

Pure Fe3O4 is almost black in color and is significantly darker than g-Fe2O3, which has a slightly redish tint compared to Fe3O4. a-Fe2O3 is pretty much red in color, much more so than g-Fe2O3.

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Phase transformation from α-Fe2O3 to Fe3O4 and …

A facile surfactant and calcination free phase transformation from hematite (α-Fe2O3) to magnetite (Fe3O4) and lithium ferrite (LiFeO2) was achieved by the self-reduction of the Fe3+ ion in [Fe(CN)6]3− anions in the presence of alkali hydroxides (LiOH·H2O, NaOH and KOH) under hydrothermal conditions. It …

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Phase transformation from α-Fe2O3 to Fe3O4 and …

A facile surfactant and calcination free phase transformation from hematite (α-Fe2O3) to magnetite (Fe3O4) and lithium ferrite (LiFeO2) was achieved by the self-reduction of the Fe3+ ion in [Fe(CN)6]3− anions in the presence of alkali hydroxides (LiOH·H2O, NaOH and KOH) under hydrothermal conditions. It …

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Fe2O3+HCl→? And what about Fe3O4+HCl? | Yahoo …

2013-4-4 · Fe2O3 + 6HCl → 2FeCl3 + 3H2O . Fe3O4 is a mixed oxide consisting of equimolar mixture of Fe2O3 and FeO . It reacts with HCl as follows: Fe2O3 + FeO + 8HCl → 2FeCl3 + FeCl2 + 4H2O . You can write an overall reaction : Fe3O4 + 8HCl → 2FeCl3 + FeCl2 + 4H2O