Preparation of pvp modified CoFe₂ O₄ nanoparticles and its dispersion in ethanol

In this paper CoFe₂ O₄ ultrafine particles of 2nm have been prepared by precipitation method and modified by Poly-vinyl pyrrolidone (PVP). Confirmation of the formation of PVP@ CoFe₂ O₄ (PVP modified CoFe₂ O₄) was characterized by XRD, EDX and FTIR comprised analysis. And the size, shape, nature of sample was analyzed and discussed using TEM, XRD. Hydrodynamic size was characterized by PSD-DLS after the ultrasonic ton treatment on the dispersed PVP/CoFe₂ O₄ powder in an ethanol which has been compared to the TEM and XRD estimate. The zeta-potential and conductivity have been analyzed for the varying weight concentration of powder in ethanol dispersion. The nature of PVP@ CoFe₂ O₄ powder in ethanol dispersion in term of shift was analyzed using the zeta potential and rendering this study to the stability and the nature for the negative and positive potential.