Metal- and covalent organic frameworks as catalyst for organic transformation: Comparative overview and future perspectives

Selective photocatalytic oxidation of cyclohexene coupled with hydrogen evolution from water splitting over Ni/NiO/CdS and mechanism insight

“…However, when the metal loading exceeds the optimal loading range, the over-enriched electrons on the metal will induce the recombination of holes and reduce the oxidation ability of the catalyst. 43…”

“…However, when the metal loading exceeds the optimal loading range, the over-enriched electrons on the metal will induce the recombination of holes and reduce the oxidation ability of the catalyst. 43 Considering the low solubility and density of cyclohexene in water, acetonitrile was added as the solution medium, and…”

Metalated covalent organic frameworks: from synthetic strategies to diverse applications

“…First, COFs contain abundant and mutually independent 1D pore channels, which effectively enhance mass transfer and facilitate the contact of reactants with catalytic active sites, theoretically making all metal sites accessible. 659 Second, the metal sites are uniformly distributed in the COF-matrix, preventing the leakage, agglomeration, and deactivation of the metal catalyst during the reaction. [660][661][662] Third, COFs are highly stable, and thus, their structural integrity usually remains intact after multiple uses, which facilitates the recycling and reuse of catalysts and reduces the consumption of precious metals.…”

A metal–covalent organic framework catalyst with pincer coordination units for boosting transfer hydrogenation of quinolines with ammonia borane

“…Reticular chemistry is the chemistry of extending molecular building blocks to extended crystalline structures by strong bonds. 1,2 Particularly, metal-organic frameworks (MOFs) [3][4][5][6][7] and covalent organic frameworks (COFs) [8][9][10][11] are two main kinds of reticular structures (Scheme 1a). MOFs are built from metal ions and organic linkers through coordination linkages and have shown great promising application in catalysis, energy storage, and gas adsorption and separation.…”