Researchers from the Department of Physics at the University of Trento have conducted a study on green hydrogen production through artificial photosynthesis, specifically focusing on photoelectrochemistry. By utilizing semiconductor materials like graphitic carbon nitride (g-C3N4), the team aims to break the chemical bond of water molecules to obtain hydrogen without emissions. The research, published in Carbon, highlights the use of single atomic layer photocatalysts, demonstrating superior performance compared to thicker structures. This finding paves the way for more efficient utilization of these materials in green hydrogen production. The researchers investigate the behavior of excitons within carbon nitride, revealing surprising insights into electron movement and hydrogen ion binding. By continuing their work with numerical simulations on a vast material database, the team seeks to identify enhanced catalysts for green hydrogen production. Pietro Brangi, a co-author of the study, expresses hope for significant innovation in hydrogen production through this methodology. The project's ultimate goal is to contribute to energy sustainability by advancing clean hydrogen production methods.