Biosynthesis of Gold Nanoparticles Using Aqueous Extract of Lannea coromandelica Bark with Stabilizer Polyacrylic Acid (PAA) and Polyvinyl Alcohol (PVA)

Abstract

In this research, we have succeeded in synthesizing gold nanoparticles using an aqueous extract of the bark of Lannea coromandelica . The bark of Lannea coromandelica contains many secondary metabolite chemical compounds that can be used as bioreductants. The gold nanoparticles produced were burgundy or purplish with a maximum wavelength of 528–529 nm with an absorbance of 0.298–0.364 during 5 h of storage at room temperature. The IR results showed that compounds containing O–H, C=O, and C–N groups play a role in reducing gold into nanoparticles. The obtained nanoparticles were pure gold nanoparticles with crystallite sizes by XRD characterization of 44.6 nm and 49.11 nm for AuNP-PAA and AuNP-PVA, respectively.

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