Porous organic polymer (POP) nanosheets: an efficient photo-catalyst for visible-light assisted CO₂ reduction

Abstract

We have designed Nano-Sheet-like Porous Organic Polymer (POP) constructed via a schematic hydrothermal process and characterized by PXRD, N2 adsorption–desorption studies, UV–vis, XPS and microscopic analysis (TEM and FESEM). The...

Metal-Free Covalent Organic Framework for Facile Production of Solar Fuel via CO2 Reduction

“…The Tta-TFPA COF goes through a photoexcited state (Tta-TFPA COF*) after being introduced to visible light, which then converts CO 2 to HCOOH. The catalytic cycle then moves on to an oxidative quenching 67 step and the creation of a cationic radical, which retains its ground state by obtaining one electron from TEOA (sacrificial electron donor), while the Tta-TFPA COF regenerates and becomes ready for the following cycle.…”

A sustainable strategy for the visible-light-driven facile N-formylation of amines using a Co(ii)-embedded covalent organic framework as an efficient photocatalyst

“…In aqueous and organic environments, COFs are substantially more stable than MOFs (metal–organic frameworks) and other polymer materials, which are unstable in high-humidity atmospheres. 33,34 Due to their intrinsic pore size, ordered structure, high BET (Brunauer–Emmett–Teller) surface area, significant CO 2 uptake ability and excellent chemical and thermal stability, heterogeneous COFs have a wide variety of applications, particularly in catalysis, 35–39 gas adsorption and storage, 40–42 the sensing of metal ions or molecules, 43 optoelectronics, 44–46 semi-conducting 47 and photoconductive devices, 48 light harvesting 49 and drug delivery. 50 Several synthetic techniques, for instance solvothermal, microwave-assisted, mechanochemical, and vapour-assisted methods, have been utilized to create COFs; however, solvothermal-based synthetic approaches have emerged as the most popular and frequently applied in COF research.…”

A Triazole‐Based Covalent Gel Loaded with Cu/Pd Bimetallic Nanoparticles for Efficient Catalytic Cross‐Coupling Reactions

“…[21] Compared with homogeneous catalytic reactions which are difficult to separate residue catalysts, heterogeneous catalytic reactions are more environmentally friendly and resourceefficient with easy separation and fast reaction kinetics and mass transfer processes. [22] Various porous materials with specific structures have been used as supports, including carbon material, [23,24] silicon dioxide, [25,26] zeolites, [27,28] MOFs, [29,30] COFs, [31,32] POPs, [33,34] and gels. [35][36][37] Gels possess hierarchical pore structure, providing micropores for anchoring the catalytic center and macropores for efficient mass transfer.…”