What is Fe3O4 structure?
Magnetite crystallizes in the inverse cubic spinel structure (Fd-3m [Fe3 +]A[Fe2 + Fe3 +]BO4), where A is the tetrahedral and B the octahedral side (Fig. 1). The valence band of the O(2p) to the empty Fe(4s) in Fe3O4 is separated by 4–6 eV.
How do you make Fe3O4 nanoparticles?
Fe3O4 magnetic nanoparticles (MNPs) were synthesized by a co-precipitation method using sodium citrate and oleic acid as modifiers. Phase composition and microstructure analysis indicate that the sodium citrate and oleic acid have been successfully grafted onto the surface of Fe3O4 MNPs.
Why is Fe3O4 magnetic?
Fe3O4 is an inverse cubic spinel compound, wherein iron ions are shared between tetrahedral and octahedral sites; tetrahedral sites being occupied by Fe3+ ions whereas, octahedral sites by both Fe3+ and Fe2+ ions in the same ratio. Therefore, the net magnetic moment in Fe3O4 is due to Fe2+ ions (4 μB).
What is the use of Fe3O4?
Related Applications and Industries Among other industries, Iron oxide Fe3O4 nanoparticles are used as magnetic data storage, biosensors, drug-delivery, ferrofluids, magnetic coatings, EM-waves absorbing coatings, wastewater purification.
Is Fe3O4 acidic or basic?
The microwave hydrothermally treated Fe3O4 particles were basic at pH <7.7 and acidic at pH >7.7, while the nontreated and base-treated particles did not show clear acidic or basic nature.
What is Fe3O4 called?
Iron Oxide
Iron Oxide (fe3o4)
How Fe3O4 is formed?
Fe3O4 is formed with the combination of FeO and Fe2O3 i.e. ferrous oxide and ferric oxide.
What is the formula of iron oxide?
Fe2O3
Iron(III) oxide/Formula
Is Fe2O3 acidic or basic?
Ferric oxide, also known as iron(III) oxide, is an amphoteric oxide of iron with the chemical formula Fe2O3. It can be noted that oxides of iron, aluminium, and tin, are all amphoteric chemical species – they exhibit both acidic and basic qualities.
Is CaO acidic or basic?
Calcium oxide (CaO) , is a metal oxide. Like other metal oxides it is a basic oxide because it dissolves in water to form calcium hydroxide.