Int. J. Adv. Sci. Eng. Vol.4 No3 662-666 (2018) 662 ISSN 2349 5359 Porkali et al., International Journal of Advanced Science and Engineering www.mahendrapublications.com ABSTRACT: Silver and Magnesium doped ZnO nanoparticles were synthesized via Sol-gel method followed by calcinations at 500, 600 and 700°C for 2h. The influences of calcinations temperature on the particle size, the structural and morphological studies were examined by X-ray diffraction (XRD), Scanning Electron Microscope (SEM). The Elemental analysis have been estimated by Energy Dispersive X-ray Absorption (EDAX), Chemical and optical properties were studied by Fourier transform infrared spectroscopy and UV-Vis absorption spectrum. The average particle size of the synthesized ZnO nanoparticles is calculated using the Scherer formula and was found to be less than 30 nm. These results also indicate that there was an improvement in the crystalline of ZnO nanoparticles with the increase in the calcinations temperature. It was suggested that these Ag-Mg co-doped ZnO nanoparticles have good applications in optoelectronics devices. As the process is simple and low cost, it has the potential to be produced on a large scale. KEYWORDS: ZnO, silver, magnesium, calcinations, nanoparticles, XRD, UV, FTIR DOI: 10.29294/IJASE.4.3.2018.662-666 © 2018 Mahendrapublications.com, All rights reserved *Corresponding Author: bennyanburaj@rediffmail.com Received: 16.01.2018 Accepted: 15.03.2018 Published on: 20.03.2018 Combination of Silver and Magnesium doped ZnO Nanoparticles using Sol-Gel method V.Porkalai 1 , B.Sathya 1 , D.BennyAnburaj 1* G.Nedunchezhian 1 , R. Meenambika 2 1 PG and Research Department of Physics, Thiru.Vi.Ka. Government Arts College, Thiruvarur, Tamil Nadu, India-610 003 2 Marthandam College of Engineering & Technology, Kanyakumari District, India-629177 1. INTRODUCTION The important properties of nanoparticles material have started motivation among scientists to explore the possibilities of using them in technology applications. The metal oxide reproduction was suitable for a wide range of applications. Among the nano structured metal oxides ZnO is considered to be one of the best metal oxides that can be used at a nanoscale level. ZnO itself has normally a hexagonal or wurtzite structured and well-known as an n-type II-VI semiconductor with wide band gap of about 3.37 eV and a large excitation binding energy of 60 meV [1-2]. From this point of view, ZnO nanoparticles powder display a great powder in many applications such as gas sensors [3], solar cells [4], and photo catalytic with high chemical activity [5]. In order to improve the optical, magnetic and electrical properties of ZnO nanoparticles, many reports are available that ZnO exhibits better photo catalytic activity in the presence of visible light when hybridized with noble metals such as Ag, Pt and Au etc [6]. A number of chemical methods of synthesis have been applied to synthesize nanostructured ZnO nanopowder like hydrothermal [7-], co-precipitation [8], sol–gel [9-10] and salvo thermal methods [11]. Among these chemical routes, precipitation and sol-gel-method are a common method that can be used for large scale production. 2. MATERIAL AND METHODS The host precursor zinc acetate dihydrate (Zn(CH3COO)2.2H2O) was dissolved in deionized water which was used as the starting solution (0.2 M). Silver nitrate (AgNO3) and Magnesium (MgCl2) was used dopant precursors for Ag, respectively. The pH value of the starting solution was maintained at 9 by adding the required amount of NH4OH solution. After, Tri- ethanolamine (C6H15NO3) is added as surfactant to control size and morphology of nanoparticles. The resultant mixture was heated to 60 ° C and magnetically stirred for 2hrs. After completed the stirring process the precipitate was separated carefully by filtration and washed several times with a mixture of ethanol and water kept in the ratio of 1:3. The final products were irradiated with microwave oven (MS2042DW) for 30 min. Finally the powder calcinated at 300 ° C, 500 ° C, and 700°C for 2hrs. 2.1 EXPERIMENTAL PROCEDURE: 2.2 Characterization of the Samples Structural analysis was carried out using X-ray diffractometry ȋXRDȌ using CuKȽ radiation ȋλ=ͳ.ͷͶͲ͸Å) in the ʹθ range from ʹͲ 0 to 80 0 . Morphology and microstructure were identified by scanning electron microscope (SEM) and energy dispersive X-ray absorption (EDAX) respectively. Formation of ZnO wurtzite phase and available molecular bonds were investigated by the FTIR absorption spectrum. To investigate the optical properties of these nanoparticles, the absorbance spectra of the samples were obtained using UV-vis-NIR spectrophotometer. 3. RESULTS AND DISCUSSION: 3.1 FT-IR Spectroscopy The Infrared spectra of Silver and Magnesium doped ZnO nanoparticles recorded in the region of 4000–500 cm -1 as shown in Fig 1[12]. The wide intense absorption peaks positioned at 2922–3394 cm -1 corresponds to OH-group stretching vibrations due to the bound H2O on the surface of the nanocrystalline powder sample. The FT-IR bands around 2900cm -1 belongs to CH2 stretching vibration, 1618 cm -1 to1700 cm - 1 correspond to asymmetric and