Goldene: New 2D form of gold makes graphene look boring

> The researchers say that goldene gets its new properties because in its 2D form, the atoms get two “free bonds.” This means it could eventually find use as a catalyst for converting carbon dioxide, producing hydrogen or valuable chemicals, or purifying water. And of course, electronics could benefit, even if it just means less gold is needed to make them.

"Synthesis of goldene comprising single-atom layer gold" (2024) https://www.nature.com/articles/s44160-024-00518-4 :

> [...] Our developed synthetic route is by a facile, scalable and hydrofluoric acid-free method. The two-dimensional layers are termed goldene. Goldene layers with roughly 9% lattice contraction compared to bulk gold are observed by electron microscopy. While ab initio molecular dynamics simulations show that two-dimensional goldene is inherently stable, experiments show some curling and agglomeration, which can be mitigated by surfactants. X-ray photoelectron spectroscopy reveals an Au 4f binding energy increase of 0.88 eV. Prospects for preparing goldene from other non-van der Waals Au-intercalated phases, including developing etching schemes, are presented.

- https://news.ycombinator.com/item?id=40079841 8mins ago lol