Researchers at the S. N. Bose National Centre for Basic Sciences in Kolkata have made significant progress in the synthesis of hydrogen peroxide (H2O2), a chemical crucial for various industries. By designing hydrazone-linked covalent organic frameworks (COFs) with good water affinity, the team achieved efficient H2O2 generation through photocatalysis. This innovative approach not only reduces energy consumption but also minimizes environmental impact, offering a more sustainable pathway for H2O2 production. The COFs showed remarkable performance under both LED and sunlight irradiation, outperforming many existing organic photocatalysts. The method using a water-benzyl alcohol solution proved effective in preventing H2O2 degradation, paving the way for the development of continuous flow reactors for industrial-scale production. This breakthrough represents a positive step towards environmentally friendly and cost-effective H2O2 synthesis, with potential implications for various applications in disinfection, paper bleaching, and beyond.