Multivariate covalent organic frameworks boosting photocatalytic hydrogen evolution

Abstract

Multivariate covalent organic frameworks (COFs) are a desirable platform for synergizing the consecutive and multistep photocatalytic energy conversion via the inherent functional modules. However, with variation of multicomponent in COFs,...

Programmable Photocatalytic Activity of Multicomponent Covalent Organic Frameworks Used as Metallaphotocatalysts

“…Covalent organic frameworks (COFs) are well‐defined, crystalline, highly porous polymers with tunable structures that are prepared by covalently attaching multiconnected nodes with linear linkers, which can introduce functional groups into the backbone [24–28] . When a three or higher connected node component is allowed to react with more than one linker unit, several functionalities can be integrated into the backbone of a single COF material (multicomponent approach) [29–34] . Owing to their conjugated backbones, COF materials have been shown to serve as valuable photocatalysts [35–39] .…”

“…[ 24 , 25 , 26 , 27 , 28 ] When a three or higher connected node component is allowed to react with more than one linker unit, several functionalities can be integrated into the backbone of a single COF material (multicomponent approach). [ 29 , 30 , 31 , 32 , 33 , 34 ] Owing to their conjugated backbones, COF materials have been shown to serve as valuable photocatalysts. [ 35 , 36 , 37 , 38 , 39 ] Using the modularity of COFs the optoelectrical properties can be influenced through, for example, the choice of the node component.…”

Enhanced photocatalytic H2 evolution over covalent organic frameworks through an assembled NiS cocatalyst

“… 28,29 Also, our group reported a series of different strategies, e.g. , incorporating electron transfer mediators, 30 modulating building-block heterogeneity, 31 and stabilizing coaxial stacking of COF layers. 32 However, most COF-based photocatalysts are challenging to realize high catalytic activity without noble metal co-catalysts, which is conducive to reducing the exciton recombination.…”

Covalent organic framework with sulfonic acid functional groups for visible light-driven CO2 reduction

“…27,28 Furthermore, COFs have a large specific surface area, which exposes more photocatalytic sites, thereby increasing the light absorption capacity. Owing to their excellent characteristics, COFs are widely used as efficient photocatalytic catalysts for CO 2 reduction, 29 degradation of organic pollutants, 30 Cr( vi ) reduction, 31 water decomposition, 32 hydrogen evolution, 33,34 etc.…”