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Iron oxide nanoparticles may also be used in magnetic hyperthermia as a cancer treatment method. In this method, the ferrofluid which contains iron oxide is injected to the tumor and then heated up by an alternating high frequency magnetic field. The temperature distribution produced by this heat generation may help to destroy cancerous cells ...
Iron nanoparticles can be synthesized using two primary approaches: top-down and bottom-up methods. [ 3 ] Top-down approaches create nanoparticles by breaking down larger bulk materials into smaller particles, including laser ablation and mechanical grinding.
Ferrite nanoparticles or iron oxide nanoparticles (iron oxides in crystal structure of maghemite or magnetite) are the most explored magnetic nanoparticles up to date.Once the ferrite particles become smaller than 128 nm [22] they become superparamagnetic which prevents self agglomeration since they exhibit their magnetic behavior only when an external magnetic field is applied.
Iron oxide and cobalt nanoparticles can be loaded onto various surface active materials like alumina to convert gases such as carbon monoxide and hydrogen into liquid hydrocarbon fuels using the Fischer-Tropsch process. [15] [16] Much research on nanomaterial-based catalysts has to do with maximizing the effectiveness of the catalyst coating in ...
Research papers include: Related physicochemical, rheological, and dielectric properties of nanocomposites of superparamagnetic iron oxide nanoparticles with polyethyleneglycol [6] Physicochemical properties of cellulose nanocrystals treated by photo-initiated chemical vapour deposition (PICVD) [7]
While iron oxide used to make nanoparticles is biodegradable, the toxicity of magnetic nanoparticles is still under investigation. Some research has found no signs of damage to cells, while others claim that small (< 2 nm) nanoparticles can diffuse across cell membranes and disrupt organelles. [31] [32]
Nanoparticles are classified as having at least one of its dimensions in the range of 1-100 nanometers (nm). [2] The small size of nanoparticles allows them to have unique characteristics which may not be possible on the macro-scale. Self-assembly is the spontaneous organization of smaller subunits to form larger, well-organized patterns. [3]
He solved the problem of optimizing the a.c. magnetic response, in vivo, of iron-oxide NPs for any applied frequency: using Monte Carlo simulations he determined the optimal core size to be at the threshold of the superparamagnetic transition, synthesized the required NPs, and controlled their biocompatibility and inter-particle interactions ...