Iron fatty acid complexes (IFACs) are prepared via the dissolution of porous hematite powder in hot unsaturated fatty acid. The IFACs are then decomposed in five different organic solvents under reflux conditions in the presence of the respective fatty acid. The XRD analysis results indicate that the resulting NPs comprise a mixture of wustite, magnetite, and maghemite phases. The solvents with...

Maghemite particles were synthesized by using a combined combustion method and sonochemical step. was used as carrier to prepare supported Pt Pd catalysts after deposition via The immediately ready be (metals catalytically active) for the 2,4-dinitrotoluene hydrogenation produce 2,4-toluenediamine. most active Pd/maghemite bimetallic Pd-Pt/maghemite. easily separable reaction due their magnetic...

Abstract The novel iron-oxide nanoparticles (NPs) stabilized with triethanolammonium oleate were produced. specimens divided into two groups: the top NPs (extracted from supernatant) and bottom (nanoparticles sedimented at of flask during centrifugation), respectively. XRD Mössbauer studies revealed a presence Fe 3 O 4 phase in both types nanoparticles. Furthermore, formation maghemite layer on...

Nano crystals of γ-Fe2O3 (maghemite) were synthesized by emulsion precipitation method using kerosene as oil phase, SPAN80 (sorbitane monooleate) as the surfactant and sodium hydroxide as the precipitating agent. The characterization of the samples by FTIR (Fourier transform infra-red) and XRD (X-ray diffraction) techniques confirmed the formation of γ-Fe2O3 (maghemite). Analysis by SEM (scanni...

To study the photodegradation of organic pollutants at the interface of minerals and water in natural environment, three series of alumina-coupled iron oxides (Al(2)O(3)-Fe(2)O(3)-300, Al(2)O(3)-Fe(2)O(3)-420, and Al(2)O(3)-Fe(2)O(3)-550) with different alumina fraction were prepared and characterized by X-ray diffraction (XRD), Brunauer-Emmett-Teller (BET) and Barret-Joyner-Halender (BJH), and...