4TH International Congress on Technology - Engineering & SCIENCE - Kuala Lumpur - Malaysia (2017-08-05)

The Using Of Alkanolamine Compound As Capping Agent On Green-synthesis Of Silver Nanoparticles

Study of silver nanoparticles preparation has been developed increasingly due to the wide application in various areas and field, such as medicine, energy, catalysis, and electronic. An environmental-friendly method is needed to fabricate biocompatible silver nanoparticles without producing hazardous materials to the environment. In this study, we synthesized silver nanoparticles by green synthesis method, using leaf extract of gambir (Uncaria gambir) and alkanolamine compounds as reducing and capping agents, respectively. The synthesis route consists of two main procedure include extraction of gambir leaf extract and synthesis of silver nanoparticles. The mole ratio of alkanolamine compounds to the AgNO3 was varied to determine the effect of amount of capping agent used in the reaction. The formation of silver nanoparticles was indicated by colour changes to reddish brown, and formation of peaks in the wavelength range 400 to 420 nm in UV-Vis spectrophotometer analysis which indicated the successful form of silver nanoparticles. The result showed that absorbance of silver nanoparticles was increased with the increasing of the contact time of 30 minutes, 1 hour, 2 hours, 4 hours, 24 hours, 48 hours, and 1 week. The absorbance of silver nanoparticle colloid was decreased along the increase of the amount of capping agents. The silver nanoparticles showed good stability to the contact time of more than 1 month. TEM analysis showed that the resulted silver nanoparticles were 1-60 nm in diameter which the alkanolamine stabillized silver nanoparticles were smaller in size, then nanoparticles without alkanolamine addition.
Keywords: alkanolamine, green synthesis, silver nanoparticles, Uncaria gambir
Arniati Labanni, Syukri Arief, Zulhadjri