Chem. Commun., 2025, Accepted Manuscript DOI: 10.1039/D5CC03985A, Communication Bidhan Kumbhakar, Uttam Pal, AVANTI CHAKRABORTY, Pekham Chakrabortty, Tanusri Saha-Dasgupta, Pradip Pachfule To highlight the critical role of donor-type functional group in COF photocatalysts for sustainable H₂O₂ production under natural air and without sacrificial donors, herein, we demonstrated that methoxy-functionalised COFs (TTT-DMTA)...