An efficient catalytic reduction of nitroarenes over metal‐organic framework‐derived magnetic graphitic carbon nitride nanosheet

• Published in: Applied organometallic chemistry 2023-12, Vol.37 (12), p.n/a
• Main Authors: Malmir, Masoume, Heravi, Majid M., Jahani, Ghazaleh
• Format: Article
• Language: English
• Subjects: Amines; Carbon nitride; Catalysts; Chemical reduction; Chemistry; Copper; Electron microscopy; Emission analysis; Fourier transforms; heterogeneous catalysts; Inductively coupled plasma; Infrared spectroscopy; Leaching; Magnetic measurement; Metal-organic frameworks; Metals; Microscopy; Nanosheets; Nitro compounds; nitroarenes; Optical emission spectroscopy; Recyclability; Reducing agents; reduction; Spectrum analysis
• ISSN: 0268-2605; 1099-0739
• DOI: 10.1002/aoc.7277

Metal–organic frameworks (MOFs) have emerged as highly viable and environmentally friendly alternatives to traditional catalysts within the catalytic family. This project delves into the investigation and subsequent reporting of the remarkable catalytic performance exhibited by magnetic Ox‐CN‐Cu‐MOF in the reduction of nitroarenes. The synthesis of magnetic Ox‐CN‐Cu‐MOF was achieved through a streamlined and intricate process, with its structure meticulously identified via various analytical methods including high‐resolution transmision electron microscopy (HRTEM), X‐ray diffraction (XRD), scanning electron microscopy/energy dispersive X‐ray spectroscopy (SEM/EDS), Fourier transform infrared spectroscopy (FTIR), Brunauer–Emmett–Teller (BET), vibrating‐sample magnetometry (VSM) and thermogravimetric (TG) analysis. Of particular significance, the loading of copper (Cu) and its potential leaching were effectively detected through inductively coupled plasma optical emission spectroscopy (ICP‐OES) analysis. The catalytic efficacy of magnetic Ox‐CN‐Cu‐MOF was evaluated during the conversion of nitro compounds o related‐amines utilizing NaBH4 as the reductant. Remarkably, the unique structure and Lewis acidic properties of copper in the metal nodes contributed to the exceptional catalytic behavior exhibited by the magnetic Ox‐CN‐Cu‐MOF catalyst, surpassing that of previously reported catalysts. Furthermore, magnetic Ox‐CN‐Cu‐MOF demonstrated exceptional recyclability, as validated through repetitive continuous usage. A nano magnetic MOF‐based catalyst containing copper species has been successfully synthesized and characterized. The catalytic performance of magnetic Ox‐CN‐Cu‐MOF evaluated in reduction of nitro‐compounds. Moreover, recyclability test of the magnetic Ox‐CN‐Cu‐MOF was performed, and the results proved that this catalyst is simply recovered from the mixture and shows a high and relatively stable catalytic activity during 10 runs with a narrow decrease in product conversion.