Effect of surface functionalization of Fe3O4 nano-enabled electrodes on the electrochemical reduction of nitrate

Nitrate is a noxious and persistent oxyanion in drinking waters. It themed as one of the most common water quality violations worldwide. electrocatalytic reduction appears to be viable solution. However, use platinum group elements (PGEs) electrocatalysts must avoided due their high cost limited availability. In this study, earth-abundant nano-Fe3O4 electrodes were synthesized surpass those implementation barriers. Surface functionalization has demonstrated impact performance inner sphere catalytic transformations but been seldomly explored context nitrate remediation. To understand effect Fe3O4 surfaces, nano-enabled functionalized with amine carboxylic acids groups. After 360 min, promising results obtained when surface was modified The conversion ? 90%, selectivity towards ammonia 55% an electric energy per order (EE/O) 37 kWh m?3 order?1. This EE/O value 2× lower, compared experiment using bare Fe-plate. Therefore, hold potential providing green resource recovery process treat pollution while recovering for its reuse enriched crops irrigation.