Magnetite Nanoparticles Surface Coating SiO2 and Magnetic Properties Evaluation

Dong Ying Ju; Pei Bian; Ge Letu Qing; Da Ling  Lu; Hong He

doi:10.4028/www.scientific.net/KEM.368-372.1366

Paper Titles

In Situ Formation of NbC Reinforced Ni₃Si Intermetallic Compounds by Laser Cladding
p.1351

Pressure-Dependent Characteristics and Properties of Al₂O₃-SiO₂ Thin Films Deposited on PET
p.1354

Effects of SrAl₂O₄ Homo-Buffer Layer on SrAl₂O₄:Eu Phosphors Film Grown on Glass by RF Sputtering
p.1358

Triboluminescence of SrAl₂O₄:Eu Film with Strong Adhesion Fabricated by a Combination of RF Magnetron Sputtering and Post-Annealing Treatment
p.1362

Magnetite Nanoparticles Surface Coating SiO₂ and Magnetic Properties Evaluation
p.1366

Fabrication and Characterization of Bioactive Cancellous-Like Surface on Titanium
p.1370

Rapid Reversible Superhydrophobicity to Superhydrophilicity Conversion of HF-Tuned ZnO Flower-Like Micro-Sphere Films
p.1374

Preparation of Cu Coated ZrW₂O₈ Composite Powders via Heterogeneous Precipitation Process
p.1377

On the Microstructure of Aluminum Titanate Powders Coated with Mullite Sol
p.1380

HomeKey Engineering MaterialsKey Engineering Materials Vols. 368-372Magnetite Nanoparticles Surface Coating SiO2 and...

Magnetite Nanoparticles Surface Coating SiO₂ and Magnetic Properties Evaluation

Abstract:

Magnetite nanoparticles were obtained by liquid phase precipitation method in which the pH value of [FeCl2⋅4H2O], [FeCl3⋅6H2O] and [NaOH] solution were controlled. Then the magnetite nanoparticle were scattered in water solution and put in [Na2SiO3] and [HCl], the resultant of reaction SiO2 can be coated on magnetite nanoparticles surface. The morphology and magnetite properties of the coated nanoparticles were evaluated by XRD, TEM, FTIR and VSM. The SiO2 thin film with nanometer size was coated on surface of nanoparticle, so that the magnetic value is decreased with the coating thickness increasing.