Green biosynthesis of silver nanoparticles using Curcuma longa tuber powder

Kamyar Shameli,^1,2 Mansor Bin Ahmad,¹ Ali Zamanian,² Parvanh Sangpour,² Parvaneh Shabanzadeh,³ Yadollah Abdollahi,⁴ Mohsen Zargar<sup>5

1</sup>Department of Chemistry, Universiti Putra Malaysia, Serdang, Selangor, Malaysia; ²Materials and Energy Research Center, Karaj, Iran; ³Department of Mathematics, ⁴Advanced Materials and Nanotechnology Laboratory, Universiti Putra Malaysia, Serdang, Selangor, Malaysia; ⁵Department of Biology, Islamic Azad University, Qom, Iran

Abstract: Green synthesis of noble metal nanoparticles is a vastly developing area of research. Metallic nanoparticles have received great attention from chemists, physicists, biologists, and engineers who wish to use them for the development of a new-generation of nanodevices. In this study, silver nanoparticles were biosynthesized from aqueous silver nitrate through a simple and eco-friendly route using Curcuma longa tuber-powder extracts, which acted as a reductant and stabilizer simultaneously. Characterizations of nanoparticles were done using different methods, which included ultraviolet-visible spectroscopy, powder X-ray diffraction, transmission electron microscopy, scanning electron microscopy, energy-dispersive X-ray fluorescence spectrometry, and Fourier-transform infrared spectroscopy. The ultraviolet-visible spectrum of the aqueous medium containing silver nanoparticles showed an absorption peak at around 415 nm. Transmission electron microscopy showed that mean diameter and standard deviation for the formation of silver nanoparticles was 6.30 ± 2.64 nm. Powder X-ray diffraction showed that the particles are crystalline in nature, with a face-centered cubic structure. The most needed outcome of this work will be the development of value-added products from C. longa for biomedical and nanotechnology-based industries.

Keywords: silver nanoparticles, Curcuma longa, biosynthesis, green synthesis, transmission electron microscopy