Revisiting syntheses of Fe₃O₄ nanoparticles in water and lower alcohols and their resistive switching properties

Abstract

Magnetite (Fe3O4) nanoparticles have found numerous applications due to ease of fabrication, favourable combination of physical and chemical properties, as well as environmental and biological safety. At the same time,...

Solid-State Schikorr Reaction from Ferrous Chloride to Magnetite with Hydrogen Evolution as the Kinetic Bottleneck

“…Historically, Fe 3 O 4 was first homogeneously prepared by the thermolysis of Fe(OH) 2 under an inert atmosphere, the so-called Schikorr reaction. 36,37 Later, improved methods including sol−gel, 38,39 co-precipitation, 40 hydrothermal, 41,42 high-temperature organic phase decomposition, 27,43,44 and γ-radiolysis 45,46 methods were developed to selectively form Fe 3 O 4 . Controlled nanostructures have also been achieved under homogeneous conditions.…”

“…The question here is how to prepare and regenerate Fe 3 O 4 from accessible iron sources efficiently. Historically, Fe 3 O 4 was first homogeneously prepared by the thermolysis of Fe­(OH) 2 under an inert atmosphere, the so-called Schikorr reaction. , Later, improved methods including sol–gel, , co-precipitation, hydrothermal, , high-temperature organic phase decomposition, ,, and γ-radiolysis , methods were developed to selectively form Fe 3 O 4 . Controlled nanostructures have also been achieved under homogeneous conditions. ,− Nevertheless, preparation by solid-state reaction may be more suitable for large-scale and continuous operation .…”