Shape controlled iron oxide nanoparticles: inducing branching and controlling particle crystallinity

Abstract

Branched or multiply branched iron oxide nanoparticles are synthesized, the crystal domains rearrange forming single crystalline structures, that is crucial for efficient magnetic hyperthermia.

Stable Iron Oxide Nanoflowers with Exceptional Magnetic Heating Efficiency: Simple and Fast Polyol Synthesis

“…The SAR was enhanced with increasing PAA concentrations reaching 915 W g Fe –1 (ILP = 3.0 nH m 2 kg Fe –1 ) for IONFs synthesized with 66 mM PAA. The increase in heating efficiency is attributed to the structural and magnetic properties of the IONFs, which are composed of highly ordered nanocrystals that do not behave like isolated grains. , It is worth noting that it is crucial for efficient magnetic hyperthermia, when the crystal domains rearrange forming from single crystalline structures …”

“…48,49 It is worth noting that it is crucial for efficient magnetic hyperthermia, when the crystal domains rearrange forming from single crystalline structures. 50 From the above, one can observe the nonlinear modification of SAR and ILP values with the increase of NP size. However, repeated measurements confirmed the reproducibility and validity of such big increase for the SAR for only few nanometers of size difference.…”

Thermal and optical properties of PMMA films reinforced with Nb2O5 nanoparticles

“…The surface morphology is due to formation of snowflake-shaped nanoparticle clusters. Sometimes, evaporation of solvent from the layer is connected with coffe-ring effect 53 , 54 , but here the formation of snowflakes is rather close to nanoparticles branching effect, known in literature 55 , 56 .…”

Using small-angle scattering to guide functional magnetic nanoparticle design

“…34 Nowadays, the synthesis of supraparticles or mesocrystals can be well controlled 35 allowing the preparation of particle systems with a wide range of magnetic properties and additional functionalities. 36 In addition to the synthesis of complex, multifunctional particle systems, the shape and size of the individual nanocrystals can be easily controlled for many materials, 37 including iron oxides magnetite/maghemite, 38 and hematite. 39 This allows the preparation of shape anisotropic nanoparticles, which are great candidates for various applications as the magnetic properties can be controlled by particle morphology.…”

“…In addition to the synthesis of complex, multifunctional particle systems, the shape and size of the individual nanocrystals can be easily controlled for many materials, 37 including iron oxides magnetite/maghemite, 38 and hematite. 39 This allows the preparation of shape anisotropic nanoparticles, which are great candidates for various applications as the magnetic properties can be controlled by particle morphology.…”