Magnetic COF-Supported Palladium Nanoparticles: An Efficient and Sustainable Photocatalyst for Carbonylative Coupling Reactions under CO Gas-Free and Visible-Light Irradiation

Abstract

This study presents a sustainable and green method for converting visible light into valuable products. To accomplish this, a Pd NP-doped COF-based magnetic photocatalyst (Pd/CoFe2O4@CTF) was created. The catalytic activity of the heterogeneous photocatalyst was examined in the carbonylative coupling reactions for the preparation of amides, esters, and 2-aryl quinazolinones after it had been characterized using a variety of microscopic and spectroscopic techniques, including FT-IR, PXRD, TGA, SEM, EDAX, TEM, UV-DRS, Matt-Schottky, PL, EIS, ICP, VSM, and BET. This study used the optical method for the first time to create the 2-aryl quinazolinone ring from 2-aminobenzamide and iodobenzene. The desired products can be produced in medium to good yields by using the optical method and under suitable reaction conditions. The benefits of this study include the use of visible light as a renewable and environmentally friendly source, mild reaction conditions, a simple separation method, a reduction in byproducts, and cost and time savings. Under optimal conditions, the catalyst’s stability and recyclability were investigated. It showed excellent reversibility up to 6 times without significantly losing activity.

Heterogenization of Cobalt on Nanostructured Magnetic Covalent Triazine Framework: Effective Catalyst for Buchwald-Hartwig N-Arylation, Reduction, and Oxidation Reactions

“…Magnetic covalent organic frameworks (Mag-COFs) represent a new class of emerging material, primarily employed in separation applications . Recently, Heydari and co-workers demonstrated a Pd NP-doped magnetic COF composite (Pd/CoFe 2 O 4 @CTF) as a photocatalyst for carbonylative coupling reactions for the preparation of amides, esters, and 2-aryl quinazolinones . Khojastehnezhad et.al developed a core–shell magnetic structure composed of Fe 3 O 4 and a microporous organic network, followed by the physical absorption of palladium NPs onto the outer surface of this shell substance, and the prepared nanomagnetic catalysts were able to catalyze the Sonogashira and Suzuki cross-coupling reactions …”