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Synthesis of Ag/ZnTiO3 and Ag/Zn2TiO4 by sol-gel method and their antibacterial properties

In this study, sol-gel method was applied to synthesis of antibacterial materials from initial components Ag, TiO2 and ZnO. Ethylenediaminetetraacetic acid (EDTA) was used to produce the medium complexion compounds. Ag/ZnTiO3 powder was formed when the ratio of Ag/EDTA/(ZnO,TiO2) is 0.1:2:1 while Ag/Zn2TiO4 powder was formed when this ratio is 0.1:6:1. The X-ray Diffraction (XRD) results were obtained from these compounds. Then both compounds were tested the antibacterial property with Staphylococcus aureus (S.aureus) in the concentrations of 20mg/ml in 1– 4 hrs. | SCIENCE & TECHNOLOGY DEVELOPMENT, Vol 19, No.K6- 2016 Synthesis of Ag/ZnTiO3 and Ag/Zn2TiO4 by sol-gel method and their antibacterial properties Le Huynh Tuyet Anh Le Anh Bao Quynh Huynh Ky Phuong Ha Ho Chi Minh city University of Technology, VNU-HCM. (Manuscript Received on Octorber 08th, 2016, Manuscript Revised Octorber 09th, 2016) ABSTRACT Antibacterial materials have been studying 0.1:2:1 while Ag/Zn2TiO4 powder was formed in many researches. In this study, sol-gel when this ratio is 0.1:6:1. The X-ray Diffraction method was applied to synthesis of antibacterial materials from initial components Ag, TiO2 and (XRD) results were obtained from these compounds. Then both compounds were tested ZnO. Ethylenediaminetetraacetic acid (EDTA) was used to produce the medium complexion the antibacterial property with Staphylococcus aureus (S.aureus) in the concentrations of compounds. Ag/ZnTiO3 powder was formed when the ratio of Ag/EDTA/(ZnO,TiO2) is 20mg/ml in 1– 4 hrs. Keywords: Ag/ZnTiO3, Ag/Zn2TiO4, antibacterial materials. 1. INTRODUCTION Nowadays, nanotechnology is a rapidly growing technology to develop new methods in several research fields. These developed materials for reducing bacterial activities which synthesized from metal oxides such as titanium and zinc oxides are also investigated in many researches [1]. The antibacterial activity of nano titanium oxide was proved from the previous researchers that its activity is very highly highly effective without the sunlight, but unluckily, it decreases over time [3] From the above analysis, each kind of these nano oxides meet still some weak points so the combination of them can be made new materials which can be used with or without the sunlight. Therefore, the new materials were created with the more outstanding properties by combining TiO2 and ZnO together [4, 5] The antibacterial materials ZnTiO3, and effective when it was activated by the ultraviolet light with below 380nm .