Synergistic effect for efficient catalytic persulfate activation in conducting polymers-hematite sand composites: Enhancement of chemical stability

This study explores new chemical strategies for coating the hematite sand (HS) by conductive polymers to enhance persulfate activation performance. The highest catalytic activity was due synergistic effect between HS and polymers. In fact, conjugated could act as an activator electronic mediator promote conversion of Fe (III) (II). Hence, both used (polyaniline polypyrrole) have been found provide necessary electron transfer, thanks their nitrogen atoms located in chains. radical scavenging experiments assessed paramagnetic resonance indicated that studied pathways nature a non-radical type. Further, it protective polymer layers prevented metal ion leaching, mitigate catalyst deactivation, enabled pH insensitive activation, increased stability. work provides innovative way remove multiple pollutants wastewater.