Structure-Property relationship in β-keto-enamine-based covalent organic frameworks for highly efficient photocatalytic hydrogen production

Boosting photocatalytic hydrogen evolution of covalent organic frameworks by introducing 2D conductive metal–organic frameworks as noble metal-free co-catalysts

“…9,10 More recently, COF-based photocatalysts have achieved obvious success, exhibiting excellent visible-light-driven hydrogen evolution. 11–21 For example, Lan et al 11 reported that Tp-Pa-1-COF/UiO-66-NH 2 hybrid materials exhibited an excellent H 2 production rate of 23.41 mmol h −1 g −1 in the presence of Pt as a co-catalyst under visible-light irradiation. Cooper et al 22 introduced a rigid and planar dibenzo[b,d]thiophene sulfone (DBTS) moiety into a COF and successfully prepared a more effective π–π stacking FS-COF, which showed a steady photochemical hydrogen evolution rate of 10.1 mmol h −1 g −1 with a sacrificial electron donor and Pt co-catalyst.…”

In Situ Fabrication of Porous MOF/COF Hybrid Photocatalysts for Visible-Light-Driven Hydrogen Evolution

“…Since the first report on the application of COFs as a photocatalyst for light-driven hydrogen production in 2014, various COFs have been designed and used for photocatalytic hydrogen production due to their flexible designability, high stability, large surface area and tunable band gaps for visible-light harvesting. ,,− Although the emerging COFs photocatalysts have intrinsic advantages and show encouraging photocatalytic hydrogen evolution activity, most of them still suffer from low hydrogen evolution rate because of their fast recombination rate of the photogenerated electron–hole pairs. , In order to address this issue, a series of cocatalysts such as the typical noble metal Pt nanoparticles have been integrated to COFs to reduce the overpotential for photocatalytic water-splitting. It is also the fact that the performance of most COF-based photocatalysts is markedly enhanced under the help of Pt cocatalysts. − Despite of the high efficiency, the realization of large-scale hydrogen production requires the development of alternative low-cost cocatalysts containing only highly abundant elements.…”

An electrochemical sensor for sensitive detection of dopamine based on a COF/Pt/MWCNT–COOH nanocomposite

“…21,22 Owing to the advantages of good thermal and chemical stability, ultrahigh surface area, and unique uniform pore structure, COFs have been applied to gas storage, proton conduction, photocatalysis, and drug delivery. [23][24][25][26] However, there are still few reports on COFs used in electrochemical sensing applications due to their poor intrinsic electrical conductivity. COFs functionalized with electroactive materials (e.g., noble metal, graphene, and carbon nanotube) to fabricate COF-based nanocomposite materials have been proven to be a smart hybridization strategy in enhancing their electrical conductivity.…”