Facile green synthesis of nanomagnets for modulating magnetohyperthermia: tailoring size, shape and phase

Abstract

Isometric and anisometric iron oxide magnetic nanoparticles, synthesized via an eco-friendly route, present modulated heating efficiency for magnetic hyperthermia applications.

Magnetic-field-assisted synthesis of anisotropic iron oxide particles: Effect of pH

“…This is consistent with the fact that the crystal nucleation happens almost instantly [ 6 , 43 ]. After that, only changes or reorganization of the crystalline structure of the obtained nanostructures take place [ 14 ].…”

“…Recent studies [ 14 , 31 – 32 42 ] showed that one of the key parameters that controls the iron oxide nanoparticle properties is the pH during synthesis. This is due to the fact that the OH − ion concentration in the reaction mixture controls the reaction rate and, therefore, the nanocrystal growth mechanism.…”

“…Among different magnetic nanoma-terials, iron oxides and hydroxides are of particular interest because of their high magnetization capability, availability, low toxicity and environmental benigness [4][5][6][7][8]. These nanomaterials can be exploited in a variety of applications, including magnetic data storage [9], magnetic resonance imaging (MRI) [6,[10][11][12], hyperthermia [6,[13][14][15], magnetic separation [16], targeted drug delivery [6,[16][17][18][19], lithium-ion batteries [8], preparation of hybrid organic-inorganic nanocomposites, and gels with polymer or surfactant-based matrices [20]. Among these applications, elongated particles (particularly nanorods) have many advantages over spherical nanoparticles [11,21,22].…”

Cost-Effective Design of High-Magnetic Moment Nanostructures for Biotechnological Applications

“…By now, only MNPs have been used for this purpose in areas including regenerative medicine and neurostimulation. − The use of MNS might provide a significant advance because of their distinctive feature of nonisotropic elements. Bottom-up approaches have also been developed to synthesize nonisotropic particles, such as nanorods, nanowires, and cubic or hexagonal particles. ,− However, top-down lithography techniques present a controlled way to produce magnetically anisotropic elements such as disks, ellipses, stripes, and cups with any magnetic element or multiple materials. , Therefore, MNS can be designed with specific magnetic properties and magnetic configurations in a wide range of sizes. On the contrary, in comparison with bottom-up techniques, top-down approaches offer lower production yields.…”

Nanopartículas magnéticas biocompatíveis e funcionalizadas com ácido fólico como potencial agente teranóstico no tratamento de câncer via magnetohipertermia

“…aos planos(111) e (311) da magnetita, respectivamente. Assim, os dados de TEM analisados anteriormente a partir da Figura 33 consolidam as informações obtidas na análise de DRX, inferindo a formação de nanopartículas cristalinas de magnetita na estrutura de espinélio invertida.…”