Overview
- A paper by Santu Biswas and Matthew Montemore published May 21, 2026, in Physical Review Letters reports that gold’s surface atoms rearrange into a herringbone or hexagonal pattern that protects the metal from oxygen.
- The finding is based on computer simulations that examined two common crystal faces of gold, Au(110) and Au(100), and found the reconstructed surface raises the energy barrier for oxygen adsorption and dissociation.
- A Tulane press release summarized the results by saying the pattern suppresses oxygen reactions by a factor of a billion to a trillion, but that large number comes from the release and needs experimental verification and peer scrutiny.
- The authors say the reconstruction can be prevented or reversed—for example by placing adsorbates on the surface—which would allow oxygen to bind and could make gold useful as a catalyst or for gas capture.
- Immediate next steps are laboratory tests to confirm the simulations and engineering work to control surface geometry, which could expand gold’s role in chemical manufacturing and renewable-fuel research if the approach proves practical.