Uncaria gambir Roxb. mediated green synthesis of silver nanoparticles using diethanolamine as capping agent

International Conference on Chemistry and Material Science 2017

化学;材料科学

Labanni, A.^1 ; Zulhadjri^1 ; Handayani, D.^2 ; Arief, S.^1

Material Laboratory, Chemistry Department, Universitas Andalas, Limau Manis, Padang

25163, Indonesia^1

Laboratory of Sumatran Biota, Faculty of Pharmacy, Universitas Andalas, Limau Manis, Padang

25163, Indonesia^2

关键词: Capping agent;    Colour change;    Diethanolamine;    Environmental friendly methods;    Good stability;    Green synthesis;    Leaf extracts;    UV-Vis spectrophotometers;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/299/1/012067/pdf
DOI  :  10.1088/1757-899X/299/1/012067

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Studies 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 Roxb.) as bioreducing agent and aqueous diethanolamine (DEA) solution as capping agents. The AgNO3/DEA molar ratio was varied to investigate the effect of DEA concentration to the properties of silver nanoparticles. The formation of silver nanoparticles was indicated by colour changes to yellowish brown and confirmed by result of UV-Vis spectrophotometer analysis which shown absorption band at 400 to 410 nm. The absorbance was increased to the reaction time of 24 hours, and was decrease by the increasing of DEA concentration in reaction. TEM analysis showed that prepared silver nanoparticles were spherical in shape with diameter of 3,5 - 45,5 nm. The diameter of DEA capped silver nanoparticles was 13 nm, smaller than uncapped silver nanoparticles which was 26 nm It exhibited good stability to time reaction of one month which was potential to be developed in some fields.