Sustainable mitigation of the continuously rising concentration of NO contaminants is among the most urgent issues of this century.Ambient electrocatalytic conversion of NO into useful NH_(3)offers an attractive path ...Sustainable mitigation of the continuously rising concentration of NO contaminants is among the most urgent issues of this century.Ambient electrocatalytic conversion of NO into useful NH_(3)offers an attractive path toward achieving sustainable NO abatement and NH_(3)production simultaneously.However,its efficiency is challenged by the intense competition from hydrogen evolution reaction and relatively high energy barriers of NO activation.It is thus highly desirable to explore active electrocatalyst for NO reduction reaction and investigate the mechanisms on relevant surfaces.Herein,we introduce an FeP nanorod array on carbon cloth as a high-efficiency catalyst for NO electroreduction to NH3.In 0.2 M phosphate-buffered solution,this catalyst exhibits a low onset potential of-0.014 V.Moreover,it achieves a remarkable Faradaic efficiency of 88.49%and a large NH_(3)yield of 85.62μmol·h^(-1)cm^(-2),with durability for stable NO conversion over 12 h of electrolysis.The catalytic mechanism on FeP is investigated further by theoretical calculations.展开更多
基金This work was supported by the National Natural Science Foundation of China(Nos.52076045 and 22072015)。
文摘Sustainable mitigation of the continuously rising concentration of NO contaminants is among the most urgent issues of this century.Ambient electrocatalytic conversion of NO into useful NH_(3)offers an attractive path toward achieving sustainable NO abatement and NH_(3)production simultaneously.However,its efficiency is challenged by the intense competition from hydrogen evolution reaction and relatively high energy barriers of NO activation.It is thus highly desirable to explore active electrocatalyst for NO reduction reaction and investigate the mechanisms on relevant surfaces.Herein,we introduce an FeP nanorod array on carbon cloth as a high-efficiency catalyst for NO electroreduction to NH3.In 0.2 M phosphate-buffered solution,this catalyst exhibits a low onset potential of-0.014 V.Moreover,it achieves a remarkable Faradaic efficiency of 88.49%and a large NH_(3)yield of 85.62μmol·h^(-1)cm^(-2),with durability for stable NO conversion over 12 h of electrolysis.The catalytic mechanism on FeP is investigated further by theoretical calculations.
