Dissociative Chemisorption of O2 on Al(111): Dynamics on a Correlated Wave-Function-Based Potential Energy Surface

The Journal of Physical Chemistry Letters
Rongrong YinBin Jiang

Abstract

Dissociative chemisorption of O2 on the Al(111) surface represents an extensively studied prototype for understanding the interaction between O2 and metal surfaces. It is well known that the experimentally observed activation barrier for O2 dissociation is not captured by conventional density functional theory. The interpretation of this barrier as a result of spin transitions along the reaction path has been challenged by recent embedded correlated wave function (ECW) calculations that naturally yield an adiabatic barrier. However, the ECW calculations have been limited to a static analysis of the reaction pathways and have not yet been tested by dynamics simulations. We present a global six-dimensional potential energy surface (PES) for this system parametrized with ECW data points. This new PES provides a reasonable description of the site-specific and orientation-dependent activation barriers. Quasi-classical trajectory calculations on this PES semiquantitatively reproduce both the observed translational energy dependence of the sticking probability and steric effects with aligned O2 molecules.

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Citations

Oct 2, 2020·Physical Chemistry Chemical Physics : PCCP·J G FallaqueC Díaz
Sep 1, 2019·The Journal of Chemical Physics·Mitsunori Kurahashi
May 17, 2019·The Journal of Chemical Physics·Bin Jiang, Hua Guo
Jan 30, 2021·Journal of Chemical Theory and Computation·Zuxin Jin, Joseph E Subotnik
Nov 20, 2020·Chemical Reviews·Julia Westermayr, Philipp Marquetand
Apr 23, 2021·Physical Chemistry Chemical Physics : PCCP·Geert-Jan Kroes
Feb 12, 2019·The Journal of Physical Chemistry. C, Nanomaterials and Interfaces·Gernot FüchselGeert-Jan Kroes
Dec 11, 2019·The Journal of Physical Chemistry Letters·Brendan C SweenyNicholas S Shuman

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