Electrochemical nitrate conversion ammonia production catalyst using cuprous oxide surface substitution doping and method for manufacturing same

Abstract

According to the disclosure, an ammonia production catalyst including cuprous oxide and bismuth is provided. An ammonia production catalyst according to an embodiment of the disclosure has excellent ammonia conversion efficiency and has an effect of high stability even after reaction.

What is claimed is: 
     
         1 . An ammonia production catalyst, comprising:
 cuprous oxide (Cu 2 O); and   bismuth doped on the surface of the cuprous oxide.   
     
     
         2 . The ammonia production catalyst of  claim 1 , wherein the cuprous oxide has a cuboctahedral morphology and cubic structure. 
     
     
         3 . The ammonia production catalyst of  claim 1 , wherein the bismuth is partially substitutionally doped on the surface of the cuprous oxide. 
     
     
         4 . The ammonia production catalyst of  claim 1 , wherein a mass ratio of the bismuth to the cuprous oxide is 0.1 to 3.0 (bismuth/cuprous oxide). 
     
     
         5 . An ammonia production catalyst manufacturing method characterized by mixing and reacting a precursor containing copper, a reducing agent, and a bismuth precursor. 
     
     
         6 . The ammonia production catalyst manufacturing method of  claim 5 , comprising:
 forming cuprous oxide by stirring and reacting a first solution containing a reducing agent and a precursor containing copper; and   adding a bismuth precursor during the reaction to obtain a catalyst in which bismuth is partially substitutionally doped on the surface of cuprous oxide.   
     
     
         7 . The ammonia production catalyst manufacturing method of  claim 5 , wherein the reaction is performed through hydrothermal synthesis. 
     
     
         8 . The ammonia production catalyst manufacturing method of  claim 5 , wherein the copper precursor is copper tartate (CuC 4 H 4 O 6 ), a complex of CuSO 4  and C 4 H 4 O 6 KNa. 
     
     
         9 . The ammonia production catalyst manufacturing method of  claim 5 , wherein the reducing agent is glucose. 
     
     
         10 . An ammonia production catalyst manufactured by the ammonia production catalyst manufacturing method of  claim 5 .