Synthesis, Characterization and Potential Application of MnZn Ferrite and MnZn Ferrite@Au Nanoparticles

Abstract

The ability to tune the magnetic properties of magnetic nanoparticles by manipulating the composition or surface properties of the nanoparticles is important for exploiting the application of the nanomaterials. This report describes preliminary findings of an investigation of the viability of synthesizing MnZn ferrite and core @ shell MnZn ferrite @ Au nanoparticles as potentially magnetization-tunable nanomaterials. The synthesis of the core-shell magnetic nanoparticles involved a simple combination of seed formation of the MnZn ferrite magnetic nanoparticles and surface coating of the seeds with gold shells. Water-soluble MnZn ferrite nanoparticles of 20-40 nm diameters and MnZn ferrite @ Au nanoparticles of 30-60 nm have been obtained. The MnZn ferrite @ Au nanoparticles have been demonstrated to be viable in magnetic separation of nanoparticles via interparticle antibody-specific binding reactivity between antibodies on the gold shells of the core-shell magnetic particles and proteins on gold nanoparticles. These findings have significant implications to the design of the core @ shell magnetic nanomaterials with core composition tuned magnetization for bioassay application.

The influence of zinc ferrites nanoparticles on the thermal, mechanical, and magnetic properties of rubber nanocomposites

“…Recently, transition metal ferrite nanoparticles (NPs) have found great concern because of their unique properties enable them to be used in fields as magnetic storage, biomedicine, ferrofluids, catalysts, and magnetic refrigeration systems [15–18]. Among them, zinc ferrite which has high electric resistivity and low eddy current lost.…”

Use of Specific Properties of Zinc Ferrite in Innovative Technologies

“…Over the past decades, magnetic spinel ferrites [M(II) Fe(III) 2 O 4 in various fields such as hyperthermia treatment of cancer, gas sensor, absorbent material for hot gas desulphurization, photochemical hydrogen production, semiconductor photo catalysts, component of composites, etc. The article discusses some examples of the use of zinc ferrite nanoparticles.…”

Impact of Dispersion of Nanoscale Particles on the Properties of Nematic Liquid Crystals

“…The purpose of these studies is to increase the weak diamagnetic response of LCs that is related with a large magnetic threshold field (~1-10 KG). In the recent decade, transition metal ferrite NPs have attracted lot of attention due to their unique properties that make them suitable for the use in various fields like magnetic storage, ferrofluids, biomedicine, devices, catalysis, and magnetic refrigeration system [25][26][27][28][29]. Among these NPs, zinc ferrite (ZnFe 2 O 4 ) both in micro-and nano-scales, has found wide applications in several areas.…”