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

Abstract

Metallic Ni nanoparticles wrapped with an N-doped carbon shell as a stable catalyst for the electrochemical reduction of NO to NH3 with high efficiency is described.

Introducing high-valence molybdenum to stimulate lattice oxygen in a NiCo LDH cathode for chloride ion batteries

“…As shown in Fig. 3a, when discharged to 1.2 V after the initial discharging, the Ni 2p 3/2 spectrum is deconvoluted into three-pair resonances at the binding energies of 852.3 eV, 856.3 eV and 854.9 eV, which are assigned to Ni 0 (green area), 35 Ni 2+ (orange area) and Ni 3+ (blue area), as a result of deintercalation of chloride ions from the LDH gallery. Upon the following charging, the Ni 0 signal disappears completely at 1.9 V and the peak intensity attributed to Ni 3+ generally increases at the expense of the Ni 2+ signal.…”

Recent advances in electrocatalytic NOx reduction into ammonia

“…Another work observed a stable NORR performance from N-doped carbon-wrapped nickel nanoparticles supported onto the carbon fiber (NiNC@CF). 80 Initially, nanoflake-like Ni-MOF was directly grown onto the CF via a solvothermal method. The subsequent thermal pyrolysis led to the decomposition of organic matter, producing a zero-valent Ni nanoparticle-dispersed porous N-doped carbon microstructure on CF.…”

Transition Metal Nanoparticle-Embedded Nitrogen-Doped Carbon Nanorods as an Efficient Electrocatalyst for Selective Electroreduction of Nitric Oxide to Ammonia

“…Most noble metals, including Pt, Rh, Ru, Ir, and Au, have been tested for eNORR in various electrolytes. − Several transition metals (TMs), ,− TM-based single atoms, − TM oxides, , TM phosphides, and TM dichalcogenides , have been investigated to catalyze eNORR, and the reduction product distribution of NH 3 , hydroxylamine (NH 2 OH), hydrazine (N 2 H 4 ), and N 2 O with competing HER was explored. A metal-free electrocatalyst has also been demonstrated with good performance for eNORR.…”