Promoting nitric oxide electroreduction to ammonia over electron-rich Cu modulated by Ru doping

Coupling denitrification and ammonia synthesis via selective electrochemical reduction of nitric oxide over Fe2O3 nanorods

“…Strikingly, Fe 2 O 3 /CP is shown to exhibit a large NH 3 yield of 78.02 mmol h À1 cm À2 and an outstanding FE of 86.73% at À0.6 V and À0.4 V, respectively. Notably, the NH 3 FE of Fe 2 O 3 /CF is higher than that of the reported NORR electrocatalysts including Nb-SA/BNC (77%), 30 Ni 2 P/CP (76.9%), 49 Ru 0.05 Cu 0.95 (64.9%), 50 MnO 2Àx (82.8%), 51 CoSe 2 @CNTs (48.41%), 52 and MoS 2 /GF (76.6%). 53 Encouragingly, at low overpotentials, the H 2 evolution on the Fe 2 O 3 /CP electrode is absolutely suppressed, as evident by the negligible FEs and yields toward H 2 production (FE H 2 ).…”

Effect of Electrolyte and Electrode Configuration on Cu‐Catalyzed Nitric Oxide Reduction to Ammonia

“…So far only a few materials have been proposed for electrochemical formation of ammonia from NO. Besides Bi, Au/C, [11] Ag [17] and Fe [18] electrodes, copper was demonstrated to be a promising material for NH 3 formation by both theoretical and experimental investigations in neutral and alkaline conditions [12,19–21] . Using Cu foam electrodes, ammonia production rates of 517 μmol h −1 cm −2 (faradaic efficiencies of 93.5 %) were achieved in neutral pH electrolyte at −0.9 V vs RHE using a pure NO (100 %) stream provided by sparging into the solution close to the electrode surface [12] .…”

“…Besides Bi, Au/ C, [11] Ag [17] and Fe [18] electrodes, copper was demonstrated to be a promising material for NH 3 formation by both theoretical and experimental investigations in neutral and alkaline conditions. [12,[19][20][21] Using Cu foam electrodes, ammonia production rates of 517 μmol h À 1 cm À 2 (faradaic efficiencies of 93.5 %) were achieved in neutral pH electrolyte at À 0.9 V vs RHE using a pure NO (100 %) stream provided by sparging into the solution close to the electrode surface. [12] It is worth noting that NO feeds are usually not purified and thus higher nitrogen oxides [22] might be present in the feed, complicating a precise performance evaluation.…”

Nickel nanoparticles wrapped in N-doped carbon nanostructures for efficient electrochemical reduction of NO to NH3

“…Few transition metals, noble metals, single-atom catalysts, and metal suldes have been explored as electrocatalysts in the eld of NORR. [16][17][18][19][20][21][22][23][24] Among the transition metals, Fe, Ag, and Cu nanoparticles and foils have shown promising results in the electrochemical synthesis of NH 3 from NO in an aqueous electrolyte. 19,21,25 However, due to NO molecule corrosive nature, the electrocatalyst, particularly metal nanoparticles, undergo degradation and dissolution in the electrolyte during the NORR process, limiting the efficiency of electrocatalyst during the long term NORR process.…”