Researchers have developed a two-dimensional bimetallic catalyst combining platinum nanoparticles with a supercrystal structure of gold nanoparticles, showing a significant increase in hydrogen production from formic acid under visible light and solar irradiance. This catalyst capitalizes on the interaction between plasmonic and catalytic properties, where electric field intensity at ‘hotspots’ correlates with heightened catalytic activity, rather than heat or charge transfer. The study highlights the importance of optimizing the architecture of photocatalysts and suggests potential for broader chemical applications with sustainable materials.
In this study, we introduce a plasmonic bimetallic supercrystal in which we achieved the desired antenna–reactor configuration from colloidal suspension. The size of the supercrystal can be extended up to several square millimetres while maintaining the configuration, and monolayer, bilayer and multilayer domains can be achieved…
Source: Plasmonic bimetallic two-dimensional supercrystals for H2 generation – Nature Catalysis
Wasserstoffproduktion mit Sonnenlicht: Forscher aus München entwickeln dafür einen neuartigen Superkristall. Verfahren könnte auch anderswo zum Einsatz kommen.
Source: Superkristall setzt neuen Maßstab für solaren Wasserstoff | Telepolis