Metal-doped bipyridine linked covalent organic framework films as a platform for photoelectrocatalysts

Abstract

The development of efficient photoenergy conversion systems is highly demanded from the viewpoint of solving energy and environmental problems. Covalent organic frameworks (COFs) have attracted much attention as novel photofunctional...

Rational Design of Electrocatalysts Comprising Single-Atom-Modified Covalent Organic Frameworks for the N2 Reduction Reaction: A First-Principles Study

“…However, it should be noted here that the metal nanoclusters formed through the aggregation of single metals are energetically more unfavorable than bulk metals . In addition, the previous experimental studies demonstrated that single atoms with M–N 2 and M–N 3 type COFs can be fabricated using the wet-impregnation methods and were stable during electrochemical reactions. ,,, On the basis of these considerations, it is worth investigating the theoretical NRR activity for these structures.…”

“…49 In addition, the previous experimental studies demonstrated that single atoms with M−N 2 and M−N 3 type COFs can be fabricated using the wet-impregnation methods and were stable during electrochemical reactions. 29,32,50,51 On the basis of these considerations, it is worth investigating the theoretical NRR activity for these structures.…”

Metalated covalent organic frameworks: from synthetic strategies to diverse applications

“…In the solid ultraviolet-visible diffuse reflectance spectrum (UV-vis DRS) of the cobalt( ii )-chelated Co-TpBpy COF, new strong absorption bands appear at 470 and 510 nm, corresponding to the charge-transfer transition. Similarly, other metal ions, such as Fe( iii ), 229 Cu( ii ), 230–232 Ag( i ), 233 and rare earth ions, 146 can also be introduced into 2,2′-bipyridine-COFs by the same post-synthetic metalation approach. In addition, when two metal salts are used, the heterobimetallic 2,2′-bipyridine-COFs can be easily obtained, which was well demonstrated by Sun et al 234 On the other hand, the ligand exchange between 2,2′-bipyridine-COFs and metal-complexes is an additional feasible approach for the preparation of metalated 2,2′-bipyridine-COFs.…”

Metal-Free Pyrene-Based Conjugated Microporous Polymer Catalyst Bearing N- and S-Sites for Photoelectrochemical Oxygen Evolution Reaction

“…Additionally, the ease of fabrication of organic functional groups at the pore surface and high specific surface area make them desirable materials for various energy harvesting applications. Several members of this family of materialssuch as metal-organic framework (MOF) (Ma et al, 2020), metalized/metal free covalent organic framework (COF) (Lin et al, 2018;Hosokawa et al, 2021), and porous organic polymer (POP) (Wang et al, 2020), have already been utilized as efficient OER photo-electrocatalysts. In this context, it is pertinent to mention that metal-base catalysis is associated with some major drawbacks, such as significant metal leaching and a complicated multi-step synthetic route, which creates serious obstacles towards OER performance.…”