Coupling Electrocatalytic Nitric Oxide Oxidation over Carbon Cloth with Hydrogen Evolution Reaction for Nitrate Synthesis

Abstract

NO is ah armful pollutant to the environment. The traditional removal of NO is hindered by the harsh operating conditions and sacrifice of value-added chemicals.E fficient electrocatalytic oxidation of NO was achieved over plasmatreated commercial carbon cloth, serving as apromising anode substitution reaction to couple with the hydrogen evolution reaction without consumption of hydrogen-containing resources.The introduction of carboxyl groups onto the carbon cloth boosted the electrocatalytic activity via the enhancement of NO chemisorption. Only potentials of 1.39 Va nd 1.07 Vw ere applied to reach the current density of 10 mA cm À2 in neutral and acidic conditions,r espectively,w hichi ss uperior to the state-of-the-art electrocatalysts for oxygen evolution. Energy and environmental concerns on fossil-fuel-derived hydrogen production, ammonia manufacture and nitrate synthesis,a re greatly alleviated. This work provides an original strategy to realizet he resource utilization of NO,t he sustainable nitrate synthesis and hydrogen production in agreen and economical way.

Recent advances in nanostructured heterogeneous catalysts for N-cycle electrocatalysis

“…(10) We have already seen innovations in energy devices (such as battery systems capable of simultaneously converting nitrogen species; Fig. 29), tests (characterization that records/ reveals more phenomena and mechanisms), reactions (substitution of OER with other reactions, NRR, NO2RR, or NO3RR integrated with anodic oxidation reaction [450], coupling reaction, NO oxidation reaction to nitrate [475], etc. ), etc., that may have potential practical application value, and we highly expect to see more interesting and valuable innovations in the future.…”

CoP Nanoparticle Confined in P, N Co‐Doped Porous Carbon Anchored on P‐Doped Carbonized Wood Fibers with Tailored Electronic Structure for Efficient Urea Electro‐Oxidation

“…As shown in Figure 3f, the CoP@PNC/PCWF shows two distinct Raman peaks at 1331 and 1577 cm –1 , corresponding to the featured D‐band and G‐band for carbon. [ 47 ] The relative intensity ratio of D‐band to G‐band for CoP@PNC/PCWF is ≈1.12, which is greater than that of CoP@NC/CWF (0.57), suggesting that the carbon matrix of CoP@PNC/PCWF has a substantial number of defects. [ 48 ]…”

Electrochemical Hydrogen Generation by Oxygen Evolution Reaction‐Alternative Anodic Oxidation Reactions

“…[33] The low-cost non-noble metal catalysts have been widely studied in the ethanol electrolysis system. Dai et al synthesized ultrathin Co 3 O 4 NSs with abundant active sites on Co 3 O 4 (111) (Figure 3e,f ). As shown in Figure 3g, the electrolyzer using Co 3 O 4 NSs as anode and Ni-Mo nanopowders as the cathode was capable of generating value-added ethyl acetate and H 2 .…”

“…[ 27 ] 3D hierarchically nanotubular Ni–Cu alloy on nickel foam (Ni(Cu)/NF) as anode and cathode for N 2 H 4 electrolyzer drove 100 mA cm −2 at a cell voltage of 0.41 V in 1.0 m KOH containing 0.5 m N 2 H 4 with nearly 100% FE of H 2 generation. [ 111 ] An asymmetrical two‐electrode configuration that used self‐assembly‐induced moss‐like Fe 2 O 3 and FeP on electro‐oxidized carbon paper (Fe 2 O 3 /ECP||FeP/ECP) for anode and cathode, respectively, presented a cell voltage of 0.93 V and 1.83 V at 10 mA cm −2 in 1.0 m KOH with or without 0.1 m N 2 H 4 , respectively. [ 6 ] Copper–nickel nitride (Cu 1 Ni 2 –N) with rich Cu 4 N/Ni 3 N interface was prepared through a thermal ammonolysis process (Figure 16d–e).…”