Investigation of surface structure, electrokinetic and stability properties of highly dispersed Ho2O3–Yb2O3/SiO2 nanocomposites

A series of highly dispersed Ho2O3–Yb2O3/SiO2 nanocomposites was synthesized using a liquid-phase method and examined Fourier transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD), nitrogen adsorption–desorption, transmission electron microscopy (TEM), Scanning Electron Microscopy (SEM), photon correlation spectroscopy (PCS). fluorescence spectrometry (XRF) confirmed similar amount weight percentage Ho, Yb Si oxides in the prepared samples. Samples HoYbSi1 (Ho2O3:Yb2O3:SiO2 = 0.5:10:89.5, wt. %), HoYbSi2 1:10:89, %) HoYbSi3 2:10:88, calcined at 550 °C are amorphous. TEM SEM analysis confirm sphere-like morphology with quite homogeneous size shape. As compared initial silica, agglomerated particles aqueous medium range from 200 to 850 nm according PCS data. The effect anionic polyacrylic acid (PAA) adsorption on fumed silica (SiO2) nanocomposite surfaces suspension stability studied. turbidymetry used monitor triple nanooxides suspensions as function time.