Green synthesis of Cu/RGO/Fe3O4 nanocomposite using Euphorbia bungei Boiss leaf extract.
Cyanation of aldehydes with K4[Fe(CN)6].
Characterization of catalyst by XRD, FESEM, EDS, elemental mapping and UV–Vis.
The catalyst can be recovered and reused for further catalytic reactions with almost no loss in activity.