Perspectives on the Competition between the Electrochemical Water and N 2 Oxidation on a TiO 2 (110) Electrode.
Ebrahim TayyebiÁrni Björn HöskuldssonAndré WarkNarges AtrakBenjamin M ComerAndrew James MedfordEgill SkúlasonPublished in: The journal of physical chemistry letters (2022)
The electrochemical nitrogen oxidation reaction (NOR) has recently drawn attention due to promising experimental and theoretical results. It provides an alternative, environmentally friendly route to directly synthesize nitrate from N 2 (g). There is to date a limited number of investigations focused on the electrochemical NOR. Herein, we present a detailed computational study on the kinetics of both the NOR and the competing oxygen evolution reaction (OER) on the TiO 2 (110) electrode under ambient conditions. The use of grand canonical density functional theory in combination with the linearized Poisson-Boltzmann equation allows a continuous tuning of the explicitly applied electrical potential. We find that the OER may either promote or suppress the NOR on TiO 2 (110) depending on reaction conditions. The detailed atomistic insights provided on the mechanisms of these competing processes make possible further developments toward a direct electrochemical NOR process.
Keyphrases
- electron transfer
- gold nanoparticles
- density functional theory
- molecularly imprinted
- ionic liquid
- visible light
- label free
- quantum dots
- molecular dynamics
- hydrogen peroxide
- nitric oxide
- working memory
- human health
- climate change
- molecular dynamics simulations
- risk assessment
- solid state
- mass spectrometry
- simultaneous determination