Andean Capuli Fruit Derived Anisotropic Gold Nanoparticles with Antioxidant and Photocatalytic Activity

In this study, gold nanoparticles (CF-AuNPs) were efficiently prepared from aqueous extracts of ripened Capuli (Prunus serotina Ehrh. var. Capuli) fruit by reduction of Au3+ and characterized by a variety of instrumental analyses. A noticeable change in color to ruby red/purple was observed during the formation and stabilization of CF-AuNPs. The UV-Vis spectroscopy has proven the characteristic absorption peaks lambda(max) 544 nm and 934 nm of CF-AuNPs. The biosynthesized CF-AuNPs were spherical and triangular shape confirmed through TEM analysis. The average size of the different CF-AuNPs observed during the DLS and TEM analysis ranged from 30 to 400 nm. The partial crystallinity of CF-AuNPs and their surface binded with phytochemicals is evident from the XRD patterns. Furthermore, synthesized CF-AuNPs have also been applied for antioxidant and photocatalytic applications. This work covers the fundamental principals of green chemistry and joins hands for environmental protection through nanoscience.

Automated summary

This study successfully prepared gold nanoparticles (CF-AuNPs) from aqueous extracts of ripened Capuli fruit, characterized their formation process, color change, characteristic absorption peaks, morphology, and applied them in antioxidant and photocatalytic applications.