Preparation and Magnetic Properties of NiFe2O4 Plate Nanoparticles

Koçan, Feray

doi:10.1007/s11837-021-04982-7

Cited by 2 publications

(1 citation statement)

References 46 publications

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“…This condition showed faster growth of Fe 3 O 4 NPs with large particle size. 21,22 Actually, Fe 3 O 4 NPs has a cubic crystal structure (FCC) whereby the surface energy is of anisotropic order as [111]< [100], which indicates that Fe 3 O 4 crystal might have a tendency to grow in octahedral structure. 20 However, changes of growth rate between the [111] and [100] facets resulted in one of them having lower surface energy than the other facet, which caused the change in structure morphology.…”

Section: Mechanism Of Shape Transformationmentioning

confidence: 99%

Synthesis of Fe3O4 Nanoparticles with Different Shapes Through a Co-Precipitation Method and Their Application

Ba‐Abbad

Benamour

Ewis

et al. 2022

JOM

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Magnetic Fe3O4 nanoparticles (NPs) were successfully synthesized via co-precipitation method using ferric chloride and ferrous sulphate as the starting materials. The shape and the size of Fe3O4 NPs were controlled by using different types of additive including ammonium hydroxide and sodium hydroxide. The results revealed that by adding ammonium hydroxide, the particles attained a spherical shape with a uniform size. On the other hand, the shape of the particles turned from spherical to cubic using sodium hydroxide. The magnetic results showed that both samples attained hysteresis loop, which indicated that both samples have ferromagnetic behavior. In addition, Fe3O4 NPs with cubic shape showed higher adsorptive behaviour towards Congo red compared to spherical Fe3O4 NPs, which is attributed to the enhancement of their magnetic properties. The adsorption of Congo red onto cubic Fe3O4 NPs was best described by Langmuir isotherm model, while spherical Fe3O4 NPs followed Freundlich isotherm model.

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Section: Mechanism Of Shape Transformationmentioning

confidence: 99%