biostudies-literatureLiu YFundamental Research Funds for the Central UniversitiesNatural Science Foundation of Shanghai1219-1225https://www.ebi.ac.uk/biostudies/studies/S-EPMC9048752biostudies-literatureUnknown10(3)In this study, we have developed a continuous-flow electrochemical system towards the rapid and selective conversion of ammonia to N2, based on a tubular substoichiometric titanium dioxide (Ti4O7) anode and a Pd-Cu co-modified Ni foam (Pd-Cu/NF) cathode, both of which are indispensable. Under the action of a suitable anode potential, the Ti4O7 anode enables the conversion of Cl- to chloride radicals (Cl˙), which could selectively react with ammonia to produce N2. The anodic byproducts, e.g. NO3 -, were further reduced to N2 at the Pd-Cu/NF cathode. EPR and scavenger experiments confirmed the dominant role of Cl˙ in ammonia conversion. Complete transformation of 30 mg L-RSC advancesRapid and selective electrochemical transformation of ammonia to N2 by substoichiometric TiO2-based electrochemical system.PMC904875218ZR14010002232019G-11Liu YMei JYang MSand WLi FHuang MShen CWang ZfalseRapid and selective electrochemical transformation of ammonia to N2 by substoichiometric TiO2-based electrochemical system.In this study, we have developed a continuous-flow electrochemical system towards the rapid and selective conversion of ammonia to N2, based on a tubular substoichiometric titanium dioxide (Ti4O7) anode and a Pd-Cu co-modified Ni foam (Pd-Cu/NF) cathode, both of which are indispensable. Under the action of a suitable anode potential, the Ti4O7 anode enables the conversion of Cl- to chloride radicals (Cl˙), which could selectively react with ammonia to produce N2. The anodic byproducts, e.g. NO3 -, were further reduced to N2 at the Pd-Cu/NF cathode. EPR and scavenger experiments confirmed the dominant role of Cl˙ in ammonia conversion. Complete transformation of 30 mg L-2020-01-01T00:00:00Z2020 Jan2025-04-19T12:58:15.068Z2025-04-19T12:58:15.068ZS-EPMC90487523549468010.1039/c9ra07470h