Covalent organic framework nanorods bearing single Cu sites for efficient photocatalysis

Strategies for Improving the Catalytic Performance of 2D Covalent Organic Frameworks for Hydrogen Evolution and Oxygen Evolution Reactions

“…The main reason that COFs usually show extremely low catalytic activity is lacking of the active sites. [79][80][81] Based on this view, the most commom strategy to improve the catalytic performance of COFs for OER was decorating the active metal on the backbone in various pathways. For example, Thomas and co-workers reported a programmable strategy to synthesize 2D Co-doped COF (Macro-TpBpy-Co) with microporous and uniform macroporous structure by template-induction (Figure 10a).…”

Covalent Organic Frameworks: New Materials Platform for Photocatalytic Degradation of Aqueous Pollutants

“…Not only can inorganic and organic-based semiconductors be merged with imine COFs to fabricate efficient heterostructure photocatalysts for pollutant degradation, but single-site metal can also combine with imine COFs for better photoreactivity. By coordinating metallic Cu into a terpyridine N site in an imine-based COF-909, complete separation of photo-induced electrons and holes can be achieved [ 42 ]. The charge carrier renders much improved photodegradation performance of sulfamethoxazole, outperforming the current state-of-the-art catalysts such as P25-TiO 2 or peroxymonosulfate, with 27 and 40 times higher kinetic constants of COF-909 and P25-TiO 2 ( Figure 6 ).…”

“… Schematic illustration of the mechanism of photocatalytic degradation of SMX using COF-909 (Cu). (Copied with permission from Elsevier 2021 [ 42 ]). …”

Synthesis of phenol esters by direct C–H activation of aldehydes using a highly efficient and reusable copper-immobilized polyimide covalent organic framework (Cu@PI-COF)

“…In recent years, covalent organic frameworks (COFs) have attracted considerable attention and emerged as a new structurally and compositionally varied class of crystalline porous materials due to their fascinating properties, including low density, large specific surface area, tunable composition, excellent crystallinity, pre-designable and well-defined porous structures with uniform pore sizes, structural regularity, sturdy nature and many more. [14][15][16][17][18] Due to their associated advantages, COFs have served as porous material media in a variety of applications, such as optoelectronics, 19,20 catalysis, [21][22][23] gas storage, 24,25 sensing, 26,27 energy conversion and storage, [28][29][30] photocatalysis, 31,32 drug delivery 33,34 and proton conduction. 35,36 Due to lower densities, COFs display excellent stability under organic solvents, water, moisture and even under strong acidic, basic, oxidative and reductive conditions.…”