Abstract
AbstractThe adsorption behavior of sodium ions onto oxidized surfaces was studied with x‐ray photoelectron spectroscopy (XPS). We studied the adsorption of sodium ions onto oxidized surfaces by exposing the surfaces to aqueous neutral and acidic solutions of sodium ions with and without the presence of a high concentration of acetone. The oxidized surfaces chosen were carbon‐fiber surfaces electrochemically oxidized in ammonium carbonate solution, and oxidized aluminum and copper surfaces. No adsorption of sodium ions was found when the oxidized surfaces were exposed to aqueous solutions of sodium ions with no acetone present, but substantial adsorption was seen when neutral aqueous solutions of sodium ions were used with a high concentration of acetone present. Adsorbed sodium ions could not be removed by washing in acetone but could be removed by washing in water. When glutaraldehyde was present in the acetone solutions there was evidence for the surface adsorption of glutaraldehyde/acetone condensation products.
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