▎ 摘　　要

NOVELTY - Metal ion purifier comprises a working electrode, a reference electrode and a counter electrode. The working electrode is attached with multiple independent thiol-modified graphene films. USE - The metal ion purifier is useful in water purifying system (claimed) of drinking water. ADVANTAGE - The metal ion purifier uses graphene film as working electrode, relative to the graphene nano-sheet and reducing graphene oxide material, graphene film has better conductive performance, and the functional area covered by the mask can be more standardized, simultaneously ensures the continuity of graphene film, the continuous film can provide higher stability and the graphene of thiol functionalization process can make the metal ion more rapid and high-efficient enrichment. The graphene film conductivity is better to shorten the reaction time of the enrichment and the specific surface area of graphite is good for adsorption of heavy metal ion, and stable physical characteristics can prolong the service life of the electrode. The three-electrode system constructed by the application can efficiently eliminate the large error caused by polarization current. DESCRIPTION OF DRAWING(S) - The drawing shows a working principle of the three-electrode system constructed of a metal ion purifier for drinking water. (Drawing includes non-English language text).