FeNi3 magnetic nanoparticles supported on ruthenium silicate-functionalized DFNS for photocatalytic CO2 reduction to formate

Abstract

For aerobic oxidation, anchoring ruthenium(II) in the nanospaces of magnetic dendritic fibrous nanosilica (DFNS) afforded a potential nanocatalyst (the complex FeNi₃/DFNS/Ru(II)), which showed enhanced activity. The FeNi₃/DFNS/Ru(II) complex exhibited excellent catalytic activity in the reduction of carbon dioxide to formate in the presence of visible-light irradiation. We have analyzed its characteristics by using scanning electron microscopy (SEM), transmission electron microscopy (TEM), a vibrating sample magnetometer (VSM), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), and thermogravimetric analysis (TGA).