Multifunctional nanoparticles take advantage of the physicochemical properties of two or more materials to create a new multifunctional composite nanostructure. The “ideal” nanoparticle would combine multiple functional characteristics, be stable under biological/industrial conditions, could be easily functionalized, environmentally friendly, and could be prepared in large quantities. Noble metal nanoparticles, particularly gold and palladium have exciting physical and chemical properties that are entirely different from the bulk and meet many of these characteristics. Iron oxide is also an unique semiconductor material, either as a single nanoparticle, or as a component of multifunctional nanoparticles. Its desirable properties, abundance, non-toxicity, and excellent magnetic properties make it a valuable for many applications. By combining these metallic nanomaterials with magnetic nanostructures one could create tunable multifunctional nanostructures with multi detection-capabilities, e.g. plasmonic, magnetic, functionalities. When exposed to an alternating magnetic field, magnetic nanoparticles absorb the energy and release it as heat in a highly localized, controlled and non-contact manner. Gold nanoprticles are also able to transduce light into heat through the photothermal effect. Photothermal heating arises from the energy dissipated during light absorption leading to rapid temperature rise in close proximity to the surface of the nanoparticle. The heating effect can be efficiently harnessed to drive/promote different physical phenomena.<br/>The objective of this talk is to discuss our recent synthesis techniques used to create different multifunctional nanoparticles. Their unique photo and magneto- thermal properties were explored for environmental, bio-medical and energy storage applications and will be described in detail.

Multifunctional nanomaterials and their photo- and magneto-thermal applications

254th National Meeting (2017)

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