Green synthesis and characterization of gelatin-based and sugar-reduced silver nanoparticles

Majid Darroudi^1,2, Mansor Bin Ahmad³, Abdul Halim Abdullah^1,3, Nor Azowa Ibrahim^3
1Advanced Materials and Nanotechnology Laboratory, Institute of Advanced Technology (ITMA), Universiti Putra Malaysia, Selangor, Malaysia; ²Department of Chemistry, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, Iran; ³Department of Chemistry, Faculty of Science, Universiti Putra Malaysia, Selangor, Malaysia

Abstract: Silver nanoparticles (Ag-NPs) have been successfully prepared with simple and “green” synthesis method by reducing Ag⁺ ions in aqueous gelatin media with and in the absence of glucose as a reducing agent. In this study, gelatin was used for the first time as a reducing and stabilizing agent. The effect of temperature on particle size of Ag-NPs was also studied. It was found that with increasing temperature the size of nanoparticles is decreased. It was found that the particle size of Ag-NPs obtained in gelatin solutions is smaller than in gelatin–glucose solutions, which can be related to the rate of reduction reaction. X-ray diffraction, ultraviolet-visible spectra, transmission electron microscopy, and atomic force microscopy revealed the formation of monodispersed Ag-NPs with a narrow particle size distribution.

Keywords: silver nanoparticles, green method, gelatin, glucose, UV-vis spectra