ELECTROSPRAYING OF FERRITIN SOLUTIONS FOR THE PRODUCTION OF MONODISPERSE IRON OXIDE NANOPARTICLES

Author: Gonzalez David  

Publisher: Taylor & Francis Ltd

ISSN: 0098-6445

Source: Chemical Engineering Communications, Vol.194, Iss.7, 2007-07, pp. : 901-912

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Abstract

Iron oxide nanoparticles with uniform size and narrow size distribution were synthesized by electrospraying of ferritin and subsequent heat treatment at 800°, 850°, and 900°C. Solutions of ferritin in both water and water/iso-propanol mixture (50:50) were electrosprayed in diverse gaseous environments. Narrow mobility size distributions with a mean mobility diameter of 4.5 nm and a geometric standard deviation < 1.2 were="" obtained="" at="" 800°c.="" the="" process="" of="" aerosol="" formation="" involved="" the="" thermal="" oxidation="" of="" the="" ferritin="" organic="" shell.="" the="" utilization="" of="" a="" water/iso-propanol="" (50:50)="" ferritin="" solution="" led="" to="" the="" establishment="" of="" a="" more="" stable="" electrospray,="" and,="" consequently,="" an="" increase="" in="" the="" total="" particle="" concentration="" was="" observed.="" furthermore,="" carbon-coated="" magnetite="" (fe3o4)="" particles="" were="" generated="" when="" co="" was="" used="" as="" carrier="" gas.="">