Uptake of N₂O₅ by aqueous aerosol unveiled using chemically accurate many-body potentials.

ABSTRACT: The reactive uptake of N₂O₅ to aqueous aerosol is a major loss channel for nitrogen oxides in the troposphere. Despite its importance, a quantitative picture of the uptake mechanism is missing. Here we use molecular dynamics simulations with a data-driven many-body model of coupled-cluster accuracy to quantify thermodynamics and kinetics of solvation and adsorption of N₂O₅ in water. The free energy profile highlights that N₂O₅ is selectively adsorbed to the liquid-vapor interface and weakly solvated. Accommodation into bulk water occurs slowly, competing with evaporation upon adsorption from gas phase. Leveraging the quantitative accuracy of the model, we parameterize and solve a reaction-diffusion equation to determine hydr

SUBMITTER: Cruzeiro VWD 

PROVIDER: S-EPMC8913772 | biostudies-literature | 2022 Mar

REPOSITORIES: biostudies-literature