Work

Polyoxometalate on functionalized graphene sheets as a hybrid catalyst for efficient synthesis of benzimidazoles

Year: 2025

Type: article

Abstract: In this work, graphene oxide (GO) nanoparticles were synthesized and subsequently modified using 3-aminopropyltrimethoxysilane (APTMS). An Anderson-type polyoxometalate [(C4H9)4N]2[CrMo6O18(OH)6] was then immobilized on the surface of the modified graphene oxide nanoparticles. The obtained catalyst was characterized using Fourier-transform infrared spectroscopy (FT-IR), energy-dispersive X-ray spectroscopy (EDS), inductively coupled plasma (ICP), thermogravimetric analysis (TGA), scanning electron microscopy (SEM), Raman spectroscopy, and X-ray diffraction (XRD). The catalytic performance of this recyclable hybrid catalyst was evaluated for the synthesis of benzimidazole derivatives at 75 °C under solvent-based conditions. The hybrid catalyst demonstrated easy separation and could be successfully reused at least six times with only a slight reduction in the yield of the desired product. Leaching and recovery tests, along with FT-IR analysis, confirmed the high stability of the catalytically active species and the heterogeneous nature of the catalyst.

Source: Scientific Reports

DOI: 10.1038/s41598-025-91607-7

Authors: Soghra Hossinimotlagh, Ali Zarnegaryan, Zahra Dehbanipour

Institution: Yasouj University

Language: English

Topic: Polyoxometalates: Synthesis and Applications

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

SDG: Responsible consumption and production

Open Access status: gold

Estimated APC paid: $2,690