The electrochemical nitrate reduction reaction(NO_(3)RR)holds promise for ecofriendly nitrate removal.However,the challenge of achieving high selectivity and efficiency in electrocatalyst systems still significantly h...The electrochemical nitrate reduction reaction(NO_(3)RR)holds promise for ecofriendly nitrate removal.However,the challenge of achieving high selectivity and efficiency in electrocatalyst systems still significantly hampers the mechanism understanding and the large-scale application.Tandem catalysts,comprising multiple catalytic components working synergistically,offer promising potential for improving the efficiency and selectivity of the NO3RR.This review highlights recent progress in designing tandem catalysts for electrochemical NO_(3)RR,including the noble metal-related system,transition metal electrocatalysts,and pulsed electrocatalysis strategies.Specifically,the optimization of active sites,interface engineering,synergistic effects between catalyst components,various in situ technologies,and theory simulations are discussed in detail.Challenges and opportunities in the development of tandem catalysts for scaling up electrochemical NO_(3)RR are further discussed,such as stability,durability,and reaction mechanisms.By outlining possible solutions for future tandem catalyst design,this review aims to open avenues for efficient nitrate reduction and comprehensive insights into the mechanisms for energy sustainability and environmental safety.展开更多
基金Shuguang Program,Grant/Award Number:22SG31National Natural Science Foundation of China,Grant/Award Numbers:52122312,52172291+1 种基金Shanghai Pujiang Program,Grant/Award Number:23PJD001China Postdoctoral Science Foundation,Grant/Award Number:2023M740584。
文摘The electrochemical nitrate reduction reaction(NO_(3)RR)holds promise for ecofriendly nitrate removal.However,the challenge of achieving high selectivity and efficiency in electrocatalyst systems still significantly hampers the mechanism understanding and the large-scale application.Tandem catalysts,comprising multiple catalytic components working synergistically,offer promising potential for improving the efficiency and selectivity of the NO3RR.This review highlights recent progress in designing tandem catalysts for electrochemical NO_(3)RR,including the noble metal-related system,transition metal electrocatalysts,and pulsed electrocatalysis strategies.Specifically,the optimization of active sites,interface engineering,synergistic effects between catalyst components,various in situ technologies,and theory simulations are discussed in detail.Challenges and opportunities in the development of tandem catalysts for scaling up electrochemical NO_(3)RR are further discussed,such as stability,durability,and reaction mechanisms.By outlining possible solutions for future tandem catalyst design,this review aims to open avenues for efficient nitrate reduction and comprehensive insights into the mechanisms for energy sustainability and environmental safety.
