The recent synthesis of Goldene, a 2D sheet of gold exfoliated from Ti3AuC2, offers high specific surface area (~260 m2g−1), roughly twice that of fine nanodots (~100 m2g−1), and unique electronic properties due to its dense d-orbital. In this work, we investigate the adsorption of single atom catalyst (SAC) of hydrogen atom on pristine goldene (pG), monovacant goldene (vG), and sulfur-functionalized variants (thiol-pG and thiol-vG) using ab initio calculations. The adsorption energy of a single H atom and ΔGH, determines the efficiency of the Volmer step of the hydrogen evolution reaction (HER) and is a key descriptor for HER activity. We explore various potential sites for H adsorption and its impact on descriptors such as Bader charges, d-band shift and the exchange current density.
@article{arxiv.2512.23270,
title = {A First-Principles Investigation of Goldene for Enhanced Hydrogen Evolution Reaction},
author = {Ashutosh Krishna Amaram and Aaditya Roy and Raghavan Ranganathan},
journal= {arXiv preprint arXiv:2512.23270},
year = {2025}
}