Green synthesis of antioxidant silver and platinum nanoparticles using ginger and turmeric extracts and investigation of their catalytic activity

Antioxidant silver nanoparticles (AgNPs) and platinum nanoparticles (PtNPs) were synthesized by using ginger and turmeric extracts with green method in this work. Thus these nanoparticles synthesized were characterized by UV-Vis spectroscopy, SEM-EDX and FTIR. The UV-Visible spectra of the AgNPs revealed a characteristic surface plasmon resonance peak at 420-425 nm and the UV-Visible spectra of the PtNPs revealed a characteristic surface plasmon resonance peak at 234-240 nm. The synthesized AgNPs and PtNPs acted as a catalyst to the degradation of dyes (rhodamine B, methyl orange, and methylene blue) with sodium borohydride (NaBH4). Green synthesized antioxidant silver nanoparticles effectively degraded the dyes nearly 4-10 min. and green synthesized antioxidant platinum nanoparticles effectively degraded the dyes nearly 15-24 min. of exposure time.