The present study reports the preparation of a novel magnetic catalyst constituted by Au/Ag/Fe3O4 nanoparticles (Au/Ag/Fe3O4 NPs), supported on nanocellulose obtained by pistachio shells wastes, for the catalytic reduction of anionic and cationic dyes. X-ray Powder Diffraction (XRD) analysis confirmed the coexistence of Fe3O4, Ag, and Au nanoparticles. The catalytic studies showed that 6 mg and 8 mg catalyst mass can promote the discoloration reaction of methylene blue (MB) at about 94.75% and 98.7%, after only 4 min, respectively. Discoloration efficiency reached 100% at longer times. Moreover, the time required for a 100% reduction of MB or methyl orange (MO) was found to be almost the same up to the 8th cycle of reuses, suggesting robust stability for our catalyst.
Catalytic hydrogenation of organic dyes by Ag and Au magnetic nanoparticles supported on nanocellulose from waste pistachio shells
Iuliano M.
;Ponticorvo E.;Cirillo C.;Adami R.;Sarno M.
2023-01-01
Abstract
The present study reports the preparation of a novel magnetic catalyst constituted by Au/Ag/Fe3O4 nanoparticles (Au/Ag/Fe3O4 NPs), supported on nanocellulose obtained by pistachio shells wastes, for the catalytic reduction of anionic and cationic dyes. X-ray Powder Diffraction (XRD) analysis confirmed the coexistence of Fe3O4, Ag, and Au nanoparticles. The catalytic studies showed that 6 mg and 8 mg catalyst mass can promote the discoloration reaction of methylene blue (MB) at about 94.75% and 98.7%, after only 4 min, respectively. Discoloration efficiency reached 100% at longer times. Moreover, the time required for a 100% reduction of MB or methyl orange (MO) was found to be almost the same up to the 8th cycle of reuses, suggesting robust stability for our catalyst.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
