Synthesis and Characterization of Silver Nanoparticles Using Zinc Chloride-Sugar-Amino Acids Based Novel Ternary Deep Eutectic Solvents: Silver nanoparticles - Characterization

Abstract

In this investigation, we successfully prepared four types of ternary deep eutectic solvents  zinc chloride(ZC) with hydrogen bond donors such as Glucose(GLU) & Fructose(FRU) and Amino acids such as Glutamine(GLUT) & Glycine (GLY) [i.e.a- ZC-GLU-GLY, b- ZC-FRU-GLY, c- ZC-GLU-GLUT, d- ZC-FRU-GLUT] using evaporation method as reported by Dai.et.al [1]. A variety of liquids named as Deep Eutectic solvents (DESs) derived from eutectic mixtures of salts and hydrogen bond donors have been generated and these solvents have a number of advantages over typical Ionic Liquids, including ease of preparation, availability ofinexpensive components and they are chemically inert [2]. The prepared solvents were subjected for the measurement of some physical properties such as pH, Conductivity, Density, Viscosity. The H – bonded interaction between malonic acid and other components in these DESs were revealed by the FTIR spectroscopy. The prepared DESs were used as a solvent for the synthesis of silver nanoparticles (Ag NPs) by chemical reduction method using sodium borohydride as reducing agent and sodium hydroxide as stabilizing agent [3]. The synthesized Ag NPs are characterized by FTIR, UV, XRD, EDAX and SEM techniques.Silver has a variety of applications, but one of the most notable usages is an antibacterial disinfectant [4].The UV-Visible spectrum shows surface plasmon resonance peaks around 397-432nm of Ag NPs synthesized in all DESs [5,6].Fig.1 shows the characteristic FTIR spectrum of Ag NPs around 1383 cm^-1 in all cases [7]. Fig.2 depicts the SEM images of Ag NPs in all solvents. The synthesized particles are spherical, disc and clover shaped. Fig 3reveals the XRD pattern of Ag NPs in DESs.The diffraction patterns reflects the face centered cubic of Silver NPs. Fig.4 shows the EDX analysis of silver Nanoparticles to expose the elemental analysis of it.