magnetite – TechConnect Briefs

Synthesis and Characterization of Magnetite Nanoparticles, Activated Carbon and their Composites

Adegoke H.I., Adekola F.A., Abdul Raheem M.N., University of Ilorin, NG

Magnetite nanoparticle (MNP), Fe3O4 was prepared via co-precipitation method, activated carbon was produced from coconut coir pith through chemical activation process. As coconut coir showed maximum weight loss at temperatures lower than 500°C, it was [...]

Effect of nucleating agents on magnetic properties and relaxation in magnetite-based glass-ceramics prepared by controlled crystallization of borosilicate glasses

Sandu V., Cimpoiasu E., Greculeasa S., Kuncser A., Kuncser V., Nicolescu M.S., Kuncser A., Kuncser V., U.S. Naval Academy, US

We investigated the specific magnetic structure and magnetic relaxation phenomena in magnetite nano-entities grown in a glassy matrix by controlled crystallization of Fe-containing borosilicate and boroaluminosilicate glasses in the presence of two types of nucleating [...]

A Comparative Study on Sorption of As (V) ions on Hematite, Goethite and Magnetite Nanoparticles

Adegoke H.I., Adekola F.A., Fatoki O.S., Ximba B.J., University of Ilorin, NG

Hematite (-Fe2O3), magnetite (Fe3O4) and goethite (-FeOOH) nanoparticles were synthesized by transformation of ferrihydrite and precipitation methods, this materials were used for the removal of arsenic (V) ions from aqueous solution. The synthesized nanoparticles were [...]

Application Magnetite of Nanoparticles (ICNB Preparation) as Magnetically-Resonant Contrasting Means During Visualization of Tumours

Belousov A.N., Laboratory of Applied Nanotechnology Belousova A.N., UA

In investigation on animals (Vistar rats) was proof that magnetite of nanoparticles (ICNB) are contrast means for malignant tumour visualization. Was been shown that magnetite of nanoparticles have contrast effect when performing magnetic resonance imaging [...]

Application Magnetite of Nanoparticles (ICNB Preparation) as Magnetically-Resonant Contrasting Means During Visualization of Tumours

Belousov A.N., Laboratory of Applied Nanotechnology Belousova A.N., UA

In investigation on animals (Vistar rats) was proof that magnetite of nanoparticles (ICNB) are contrast means for malignant tumour visualization. Was been shown that magnetite of nanoparticles have contrast effect when performing magnetic resonance imaging [...]

Synthesis of Micrometric Single Crystalline Magnetite with Superparamagnetic Properties for Biomedical Applications

Chirita M., Kiss M.L., Ieta A., Grozescu I., State University of New York at Oswego, US

There are no reports on the synthesis of single crystalline micrometric magnetite with superparamagnetic behavior. The literature mainly refers to micrometric particles obtained by nanoparticle agglomeration. The major disadvantage of magnetic microparticles composed of clusters [...]

Stability of Functionalized Magnetic Particles in a Physiologic Fluid

Baca Ramos K., Martínez Pérez C.A., Camacho Montes H., Olivas Armendáriz I., Martel A., García-Casillas P.E., Universidad Autonoma de Ciudad Juarez, MX

Magnetic materials are widely used in biomedical applications such as magnetic separation, magnetic resonance imaging, drug delivery and hyperthermia. In these applications the nanoparticles are functionalized in a core/shell type with polymeric materials which contains [...]

Assessment of comparative toxicity of nano- and microparticles of magnetite

Katsnelson B.A., Privalova L.I., Degtyareva T.D., Kuzmin S.V., Sutunkova M.P., Minigalieva I.A., Kireyeva E.P., Khodos M.Y., Shur V.Y., Nikolaeva E.V., Valamina I.E., Tulakina L.G., Pichugova S.V., Beykin J.B., Federal State Institution of Sciences Medical Research, RU

Assessment of toxicity of 10 nm, 50 nm and 1 um Fe3O4 particles based on shift in the cell population of the broncho-alveolar lavage fluid after their intratracheal instillation into lungs of rats and on [...]

Magnetite particle size dependence on the co-precipitation synthesis method for protein separation

Reza R.T., Martínez Pérez C.A., Rodriguez Gonzalez C.A., Baques D.B., García-Casillas P.E., Universidad Autonoma de Ciudad Juarez, MX

Nowadays, magnetic particles are of great interest to different research areas, such as magnetic separation techniques, biotechnology, catalysis, magnetic resonance imaging, magnetic fluids and data storage, among others [1]. The application of magnetic particles involves [...]

Synthesis and Characterization of Alginate-Based Magnetic Nanocomposite

Luna-Pineda T., Román-Velázquez F., University Of Puerto Rico at Mayaguez, PR

Our work addressed the development of a multi-purpose sorbent consisting of magnetite (Fe304) nanoparticles functionalized by dimercaptosuccnic acid (DMSA) and dispersed into porous calcium alginate beads (CAB). The resultant magnetic nanocomposite (MO-CAB) can be considered [...]