Greenersynthesisof magnetic nanoparticles in an aqueous deepeutectic solvent

Abstract

Abstract. The simple method of fabrication of crystalline superparamagnetic nanoferrite (Fe 3 O 4 ) particles using oxidative hydrolysis of Fe (II) salt in a deep eutectic solventwater mixture has been reported. The spectral properties of Fe3O4 nanoparticles were characterized by Fourier Transform Infrared (FTIR) spectroscopy; X-Ray Di raction (XRD) as well as Scanning Electron Microscopy (SEM) techniques were used to estimate the crystalline structure and particle size. The results of the studies revealed that this technique could be adopted to synthesize agglomerate-free superparamagnetic Fe 3 O 4 nanoparticles in a simple manner in deep eutectic solvent which may nd potential application in the biosensor and corrosion protective coatings.

Design Strategy and Application of Deep Eutectic Solvents for Green Synthesis of Nanomaterials

“…DESs have been used for the fabrication of different nanostructures, including silver nanoparticles [ 58 , 59 , 60 ], gold nanoparticles [ 61 , 62 , 63 ], magnetic nanoparticles [ 64 , 65 , 66 ], Zinc nanoparticles [ 67 ], ZnSe nanoparticles [ 68 ], CZTS nanoparticles [ 69 ], upconversion nanoparticles [ 70 , 71 ], as well as biopolymers, such as lignin nanoparticles [ 72 , 73 ] and cellulose nanoparticles [ 74 ]. DESs can dissolve many different reagents and substances, including high relative concentrations of metal salts, metal oxides, and various polymers.…”

“…Likewise, DESs are latent supramolecular catalysts that increase the reaction rate with solvent-driven pre-organization of the reactant as a primary mechanism of deep eutectic-solvothermal methodology. Aqueous DES was used for synthesizing magnetite (Fe 3 O 4 ) nanoparticles [ 64 ]. A wet-chemical reaction was started from ferrous (II) sulfate with potassium nitrate in DES and water mixture.…”