Researchers at Rice University have developed a new copper-rhodium photocatalyst that has the potential to revolutionize industrial processes by making steam methane reforming (SMR) emission-free. By utilizing light instead of heat, the catalyst can efficiently break down methane and water vapor into hydrogen and carbon monoxide, addressing issues like catalyst deactivation due to oxidation and coking. This breakthrough could not only improve efficiencies and reduce costs but also contribute to a more sustainable energy ecosystem. The study, which was published in Nature Catalysis, highlights the innovative antenna-reactor design that can regenerate the catalyst with light, thus extending its lifespan. The research, led by Peter Nordlander and Naomi Halas, builds on previous discoveries about the use of 'hot carriers' generated by metal nanoparticles when exposed to light to drive chemical reactions. Supported by the Robert A. Welch Foundation and the Air Force Office of Scientific Research, the research demonstrates the potential of photochemistry to reshape critical industrial processes. The ability to generate hydrogen on-demand through light-driven SMR could have significant implications for mobility-related applications, including hydrogen fueling stations and vehicles, by providing a cleaner alternative to current hydrogen production methods.