EFFECT OF PH AND TEMPERATURE IN SILVER NANOPARTICLE GREEN SYNTHESIS FROM SEMINYAK LEAVES

• Main Author: Bachrurozy, Tami
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/57556
• Institution: Institut Teknologi Bandung

Green synthesis silver nanoparticles (AgNPs) has been widely studied to overcome the disadvantages of chemical and physical methods in terms of cost, toxicity, and handling. In this study, one of the local plants, namely seminyak leaf, was used for the green synthesis of AgNPs. AgNPs was prepared by reducing 20 mM AgNO3 solution with 2% seminyak leaf extract in a ratio (v/v) of 1:1 at room temperature parameters (pH 5, 8, and 11) and pH 8 (T 50 °C and T 75 °C). The size of the AgNPs that were successfully synthesized had an average diameter of 12-23 nm. UV-Vis spectroscopy, FTIR, XRD, and TEM were used to characterize AgNPs. The characterization results showed that AgNPs had mostly spherical shape, while the FTIR results showed that seminyak leaves contain phenolic compounds, polyphenols, and flavonoids. The effect of size, shape, and silver types on antibacterial activity was carried out through a literature study and obtained the results that the small size of AgNPs, spherical and polygonal shapes had the best antibacterial properties. Ag is the type with the best antibacterial properties, followed by AgCl and Ag2O. The overall results of this study indicate that the synthesis of green AgNPs using seminyak leaf extract can be used as an antibacterial agent and has great potential in various applications, especially in the health sector.