Construction of a PPIL@COF core–shell composite with enhanced catalytic activity for CO₂ conversion

Abstract

Converting CO2 into high value-added chemicals is a promising approach for CO2 utilization. It’s imperative to develop novel catalysts for both selective and high adsorption of CO2 and thereafter efficient...

Covalent Organic Frameworks for Simultaneous CO2 Capture and Selective Catalytic Transformation

“…We denominate this stacking as TA-TA + TF-TF AA structure. Based on this arrangement, a horizontal offset between layers was also simulated, as previously reported [68]. (Figure S3).…”

Enhancement in the active site exposure in a porphyrin-based PIL/graphene composite catalyst for the highly efficient conversion of CO2

“…Halogen ions are easy to plug and fill the nanopores in the polymer carbon skeleton, which can result in the burial of a large number of active sites in the catalyst. 26,[44][45][46][47] Therefore, a porphyrin-based PIL was in situ constructed on the graphene surface (iPOP-ZnTPy@GNFs) so as to form surface active sites for reinforcing the utilization of buried active sites (Scheme 1). iPOP-ZnTPy@GNFs exhibited the same stability as polymers in the solubility test.…”

Emerging Ionic Polymers for CO

“…[40] Zhang and coworkers covalently integrated porous poly(ionic liquid)s (PPILs) with covalent organic frameworks (COFs) to form a core-shell hybrid (denoted PPIL@COF) for the first time. [41] The hydroxyl groups in the interfacial layer of the PPIL@COF act as Brønsted acid sites that could cooperate with bromide for the activation of epoxides. [41] Zhang et al combined both homogeneous and heterogeneous catalysts, which resulted in high catalytic activity and easy separation of catalysts from the reaction products.…”

“…[41] The hydroxyl groups in the interfacial layer of the PPIL@COF act as Brønsted acid sites that could cooperate with bromide for the activation of epoxides. [41] Zhang et al combined both homogeneous and heterogeneous catalysts, which resulted in high catalytic activity and easy separation of catalysts from the reaction products. [42] A proof-of-concept study used an aminefunctionalized imidazolium PIL monolayer attached on mesoporous silica particles to ensure easy separation of catalysts from the reaction system, while swelling of the surface-attached PIL chains allowed a local homogeneous catalytic reaction to occur.…”