Simultaneous photocatalytic hydrogen peroxide prodcution and pollutant degradation via bipyridine-based polyimide covalent organic framework
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Covalent organic framework (COF) photocatalyst for H2O2 production are receiving significant attention because of the ever-increasing demand for H2O2. Despite the redox-active property and notable photophysical characteristics of polyimide (PI), the potential of PI-based COFs (PICs) for photocatalytic H2O2 production remains unexplored. Herein, we present a dual-active bipyridine-containing PIC (PIC-BPY) as an efficient photocatalyst for H2O2 production. We elucidated the reaction pathway through a series of scavenger tests and ESR analysis, thereby confirming the additional active role of BPY along with that of PIC framework. Furthermore, we harnessed hydroxyl radicals generated during photocatalysis to explore the potential of PIC-BPY for concurrent pollutant degradation and H2O2 production.