Boosting Photocatalytic Metal-Free Hydrogen Production of Viologen-Based Covalent Organic Frameworks

OpenAlex İngilizce

High Resolution Image Download MS PowerPoint Slide In the pursuit of efficient and sustainable methods for photocatalytic hydrogen generation from water, covalent organic frameworks (COFs) have risen to prominence. Serving as a crucial link between organic flexibility and synthetic tunability, COFs present themselves as highly promising candidates for visible light-driven hydrogen production. Herein, we demonstrated that donor–acceptor (D–A) type viologen-derived COF containing 1,4-bismethylbenzene linker (COF-MB-TPCBP) as a noble metal-free catalyst could achieve a high hydrogen production rate of up to 4 mmol g –1 h –1 under visible light irradiation. Moreover, the adsorption of COF-MB-TPCBP onto the TiO 2 semiconductor surface has led to an approximate 1.35-fold enhancement in efficiency value. This strategy could contribute to the development of innovative, metal-free COFs for hydrogen evolution through solar energy conversion by refining the associated structure.