SYNTHESIS OF SILVER NANOPARTICLES BY GREEN CHEMICAL METHOD AND INVESTIGATE FOR ANTI-BACTERIA

Do Thi Ngoc Anh; Nguyen Thi Hong Ngoc; Vu Van Hoang; Nguyen Trong Nghia; Nguyen Thi Thuy Anh; Nguyen Viet Thuy; Nguyen Thi Chuc

Do Thi Ngoc Anh Faculty of Chemical and Environmental Technology, Hung Yen University of Technology and Education
Nguyen Thi Hong Ngoc Faculty of Chemical and Environmental Technology, Hung Yen University of Technology and Education
Vu Van Hoang Faculty of Chemical and Environmental Technology, Hung Yen University of Technology and Education
Nguyen Trong Nghia Faculty of Chemical and Environmental Technology, Hung Yen University of Technology and Education
Nguyen Thi Thuy Anh Faculty of Chemical and Environmental Technology, Hung Yen University of Technology and Education
Nguyen Viet Thuy Faculty of Chemical and Environmental Technology, Hung Yen University of Technology and Education
Nguyen Thi Chuc Faculty of Chemical and Environmental Technology, Hung Yen University of Technology and Education

Keywords: silver nanoparticle, green chemistry, fresh lemon extract, antibacterial, coliforms, agar plate diﬀusion.

Abstract

In this paper, spherical silver nanoparticles (Ag NPs) were synthesized by green chemical method from silver nitrate and fresh lemon extract. Optical properties, morphology and structure of the Ag NPs were analyzed by UV-Vis, SEM, EDX and XRD. As a result, the Ag NPs has a spherical shape with size about 40 nm. The antibacterial properties of Ag NPs dispersed in ethanol were realized by agar plate diﬀusion method. The result show that Ag NPs combined with ethanol have good ability to kill Coliforms bacteria. Ethanol without Ag NPs, a Coliforms resistance zone forms at 70% ethanol (volume concentration). When ethanol combined with Ag NPs, an antibacterial zone begins to form at concentration of 10 ppm Ag NPs in ethanol 40 %.

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