Two-dimensional Covalent Organic Frameworks: Intrinsic Synergy Promoting Photocatalytic Hydrogen Evolution

Recent progress on covalent organic frameworks for photocatalytic hydrogen generationviawater splitting

“…Based on the unique structure and properties mentioned above, many research studies on 2D COFs as photocatalysts for hydrogen generation have emerged in the past five years. 1,41–45 A comprehensive summary and outlook of the above findings is expected with insight into the relationship between the structure and performance. In this Review, we summarized the design principles of linkages and building blocks for COF-based photocatalysts, discussed the effects with different structural types of 2D COFs on the photophysical properties, and depicted the research advancement of COF-based photocatalysts for hydrogen generation by water splitting.…”

Activating photocatalytic hydrogen evolution by constructing Ni-based organic layers and tailoring its crystal facets

“…Moreover, the DFT results also reveal that the two unsaturated Ni(II) ions on the surface of Ni-MOL-100 have more favorable reaction thermodynamics to perform proton reduction to produce hydrogen, in comparison with Ni-MOL-010 and Ni-MOF. Thus, this study might open new opportunities in the design of more effective cocatalysts (inorganic catalysts, [76][77][78][79] MOFs, 80 covalent organic frameworks, 81,82 phthalocyanine derivatives and so on), which could physically or chemically combine with other semiconductor photocatalysts to achieve outstanding performance for extensive applications. 83,84…”

Recent Progress of Covalent Organic Frameworks‐Based Materials in Photocatalytic Applications: A Review

“…COFs are one type of porous organic material with highly ordered 2D or 3D topologies of functional units connected by covalent bonds. [42][43][44][45] 2D COFs are structurally similar to graphite, with organic monomers covalently bonded within the walls to form 2D planes and 𝜋-𝜋 conjugation between the layers for stacking. [46] As for 3D COFs, organic monomers expand in the 3D direction through covalent bonds, resulting in manifold types of 3D topologies.…”