… to be available away from the silica surface for reaction with metal ions. … metal ions, surface
modification of silica gel has explored many other possibilities of application in catalytic or ion…

… In this work, functional silicas were prepared as heavy metal ion … metal ion adsorption
capacities of each adsorbent at pH 6. For the preparation of aqueous metal solutions, metal nitrate …

… of 17 metal ions, and free energies for three other ions, with … surface ofhydrated silica gel.
The reaction is that of the formation of a metal -surface complex infinitely dilute on the surface. …

… surface SiOH groups with pK,(intr.) = 6.8. Further, surface complexation constants for several
metal ions … properties of the metal ion in aqueous solution and at the SiO,-water interface. …

… metal ions from aqueous solutions. The results are compared with those obtained with
amorphous silica … the BET surface and volume were standardized versus pure silica weights. As …

… The rigidity of the chemically modified silica matrix, in contrast … of Cu 2+ ions sorption on
samples of silica-containing grafted … Thus, the metal ion binding on the modified silica surface, at …

… chelating agents (or metal ion-specific ligands) allows specific metal ion pollutants to be …
because the metal ions are taken into the bulk of the solid particle at interior surfaces. The …

… the metal ions on the surface, the dried silica-alumina was treated with an aqueous solution
of metal chloride (0.05 mol dm -3) at ambient temperature for 2 h. The surfaces modified by …

… Silica nanotubes (SNTs) with controlled nanotubular … a higher adsorption capacity, and
surface modification of the SNTs by … for the treatment of heavy-metal-ions-containing wastewater. …

… silica, and in particular we focus on how the distribution of ligands on gradient surfaces
influences metal ion … (bidentate vs tridentate) and metal ions (Zn 2+ vs Cu 2+ ) were noted. …