Catalytic Reduction of Noble Metal Salts by Sodium Hypophosphite Promoted by the Film Poly-(p-Allyl Ether Benzenesulfonic Acid)‎

Abstract EN

Glassy carbon electrodes were coated with the film poly-(p-allyl ether benzenesulfonic acid) by an anodic procedure.

Nickel, platinum, and palladium ions were introduced into the film by ion exchange of H+ with the corresponding salts.

These ions were catalytically reduced to their corresponding metals using the known electroless reducing agent sodium hypophosphite.

Scanning electron microcopy and energy dispersive X-ray spectroscopy were carried out to demonstrate the occurrence of the catalytic process.

To compare this method with another one carried out in our laboratory, the electrocatalytic reduction of H+ was studied using the same modified electrodes.

A suggested mechanism for the catalysis is proposed.