▎ 摘　　要

NOVELTY - Reducing N-nitrosodimethylamine by electrocatalysis, comprises (i) performing sodium borohydride chemical reduction method or dipping method to load the metal on carbon-based carrier to obtain loaded metal catalyst, (ii) grinding the loaded metal catalyst obtained in step (i), and then ultrasonically dispersing through Nafion(sulfonated tetrafluoroethylene) solution of perfluorosulfonic acid resin, and fixing to surface of electrode material to obtain composite electrode, and (iii) taking composite electrode obtained in step (ii) as working electrode and placing in cathode chamber, then placing electrode platinum wire in anode chamber, separating cathode and anode chamber by Nafion-117 proton exchange membrane, placing sodium sulfate (Na2SO4) solution containing and not containing N-nitrosodimethylamine in cathode and anode chamber, and carrying out electrocatalytic reduction under direct current (DC) voltage. USE - The method is useful for reducing N-nitrosodimethylamine by electrocatalysis. ADVANTAGE - The method has simple reaction mechanism, no secondary pollution during reduction process, green, high efficiency and has excellent application prospects in treatment of typical disinfection by-product N-nitrosodimethylamine.