A team led by Dr. Edison Ang at NTU in Singapore, along with scientists from Zhejiang Ocean University, has created a revolutionary 2D material design for green hydrogen production. The design features a Janus homojunction structure using carbon nitride, where one layer is rich in nitrogen and the other in carbon. This unique arrangement generates a potent internal electric field, significantly enhancing the material's ability to split water molecules for hydrogen production. Dr. Ang emphasizes that reimagining material design at the nanoscale level unlocks new opportunities for cleaner energy. The key to the breakthrough lies in the special interface created between the carbon nitride layers, facilitating electron movement and improving water splitting efficiency. This innovation makes green hydrogen production up to 14 times more efficient than previous methods, heralding a major advancement in sustainable energy. Green hydrogen, a clean and emission-free energy source, stands to benefit from this design, offering a promising solution for reducing harmful emissions and combating climate change. Dr. Ang highlights the importance of enhancing green hydrogen production efficiency to transition away from fossil fuels and address the global climate crisis. The development opens the door to a future where green hydrogen can meet energy demands on a larger scale, contributing to a cleaner and more sustainable world.