Synthesis and properties of silver-silica nanocomposites соncentration factor

Abstract

It was synthesized and studied by nonlinear gas chromatography, X-ray analysis, potentiometry, IR
spectroscopy, and optical volumetric adsorption methods of several silver-based composites hydroxylated
silica C-120 metal content 0.001-6.8% by weight. The possibility of stabilization of nanoscale metal particles
on the surface of the adsorbent was shown. A sharp increase of the hydrophilicity of silica surface appears
due to the polarization of the structured and adsorbed water of silica by nanoparticles of the metal and the
emergence of strong acid proton donor centers. As a result specific adsorption increases many times, the
catalytic activity appears. Composites with metal content ~ 3% by weight have the strongest manifestation of
nano. The manifestation of the effect of surface plasmon resonance ( SPR), was noted.