Electrochemical reduction of nitrite(NO_(2)-)is considered as an eco-friendly and sustainable strategy for simultaneous NH_(3) production and NO_(2)-removal.However,electroreduction of NO_(2)-is a complex reaction inv...Electrochemical reduction of nitrite(NO_(2)-)is considered as an eco-friendly and sustainable strategy for simultaneous NH_(3) production and NO_(2)-removal.However,electroreduction of NO_(2)-is a complex reaction involving multi-electron transfer steps,thus requiring highly selective and active electrocatalysts.Herein,we report that amorphous CoB supported on TiO_(2) nanoarray acts as an efficient catalyst for NH_(3) synthesis via electrochemical NO_(2)-reduction.In 0.1 M Na2SO4 with 400 ppm NO_(2)-,such an electrocatalyst achieves an outstanding yield of 233.1μmol h^(-1) cm^(-2) and a high faradaic efficiency of 95.2%at-0.7 V.In addition,its performance remains stable during long-term electrolysis and cycling tests.展开更多
基金supported by the National Natural Science Foundation of China(nos 22072015 and 22176109).
文摘Electrochemical reduction of nitrite(NO_(2)-)is considered as an eco-friendly and sustainable strategy for simultaneous NH_(3) production and NO_(2)-removal.However,electroreduction of NO_(2)-is a complex reaction involving multi-electron transfer steps,thus requiring highly selective and active electrocatalysts.Herein,we report that amorphous CoB supported on TiO_(2) nanoarray acts as an efficient catalyst for NH_(3) synthesis via electrochemical NO_(2)-reduction.In 0.1 M Na2SO4 with 400 ppm NO_(2)-,such an electrocatalyst achieves an outstanding yield of 233.1μmol h^(-1) cm^(-2) and a high faradaic efficiency of 95.2%at-0.7 V.In addition,its performance remains stable during long-term electrolysis and cycling tests.
