A stable covalent organic framework for photocatalytic carbon dioxide reduction

Abstract

A metal-decorated alkene-linked covalent organic framework is a robust, selective photocatalyst for CO2 reduction.

Semiconductor/Covalent‐Organic‐Framework Z‐Scheme Heterojunctions for Artificial Photosynthesis

“…With suitable building blocks and functional organic groups, COFs have been shown to have a high visible‐light absorption capacity and fast charge‐carrier mobility . Furthermore, many COF‐based photocatalysts have been successfully used for the light‐driven reduction of CO 2 –. Meanwhile, many inorganic semiconductors (SCs, such as TiO 2 , Bi 2 WO 6 , or α‐Fe 2 O 3 ) have been demonstrated to be outstanding photocatalysts that can achieve efficient H 2 O photooxidation .…”

Covalent Organic Framework Hosting Metalloporphyrin‐Based Carbon Dots for Visible‐Light‐Driven Selective CO2Reduction

“…Rich porosity and high density of heteroatoms in their frameworks lead to higher adsorption capacity and selectivity toward CO 2 than those of traditional semiconductors. [17][18][19][20][21][22][23] The modular nature of COFs allows the known molecular catalysts, such as porphyrin [20,21] and bipyridyl units [22][23][24] bearing metal active sites, to be periodically incorporated into the frameworks. The protocols have brought out the improved efficiency and durability when compared with corresponding molecular analogues, but the accessibility of metal-containing building blocks and crystalline difficulties have greatly limited the number of COF-based photocatalytic systems.…”

Nanoscale covalent organic frameworks as theranostic platforms for oncotherapy: synthesis, functionalization, and applications

“…351 At present, monomers containing coordination sites can be categorized into four types ( Fig. 63A): porphyrin, 352-355 2,2 0bipyridine, [356][357][358][359] catechol, 360,361 and 5,6,11,12,17,18- 362 In general, COF metallization can be readily achieved by simply mixing COFs with metal salts or metal complexes to trigger metal coordination reactions or ligand exchange reactions. Therefore, even metal carbonyl complexes with poor stability can be xed in the COF pores.…”

“…Therefore, even metal carbonyl complexes with poor stability can be xed in the COF pores. 357 On the other hand, even though there are no chelating coordination sites on the monomers, COF metallization can be performed via linkages as the ligands (Fig. 63B), particularly for hydrazine-based linkages with multiple heteroatoms.…”