Disodium ETDA Capped AuNPs: Synthesis and Catalytic Activity

Stable gold nanoparticles (AuNPs) were synthesized using disodium EDTA as both reducing and capping agent. The successful formation of AuNPs was confirmed by UV–visible spectroscopy (UV–Vis), Fourier transform infrared spectroscopy (FTIR), and Raman Spectroscopy. The synthesized AuNPs were characterized by a peak at 524 nm in the UV–Vis spectrum. FTIR analysis revealed that the presence of carbonyl (at 1660 cm-1) and hydroxyl (at 3318 cm-1) groups might be responsible for the reduction of Au+3 into AuNPs. In Raman spectrum the shift obtained for the AuNPs at 476 cm-1 indicates the v (Au-o) band, which generally indicates the presence of a metal. The synthesized AuNPs exhibited good catalytic properties in the reduction of methylene blue.

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