Nitrate reduction to nitrogen in wastewater using mesoporous carbon encapsulated Pd-Cu nanoparticles combined with in-situ electrochemical hydrogen evolution.

The conversion of NO-N to N is of great significance for zero discharge of industrial wastewater. Pd-Cu hydrogenation catalysis has high application prospects for the reduction of NO-N to N, but the existing form of Pd-Cu, the Pd-Cu mass ratio and the H evolution rate can affect the coverage of active hydrogen (*H) on the surface of Pd, thereby affecting N selectivity. In this work, mesoporous carbon (MC) is used as support to disperse Pd-Cu catalyst and is applied in an in-situ electrocatalytic H evolution system for NO-N removal.