| Literature DB >> 24075535 |
Chaodong He1, Lanlan Liu, Zeguo Fang, Jia Li, Jinbao Guo, Jie Wei.
Abstract
In this study, a simple and green method to synthesize silver nanoparticles (Ag NPs) in aqueous solution via ultrasonic irradiation has been developed. Ultrafine Ag NPs with average diameter of 8 nm were obtained through sonicating aqueous solution of sodium hydroxide (NaOH, 0.1 mM) with adding silver nitrate solution (AgNO3, 5.88 mM) drop by drop. In pure aqueous solution, the reactive route related to hydroxyl radicals (OH) is presented. Furthermore, in alkaline aqueous solution, the effects of hydroxyl ions (OH(-)) on formation of Ag NPs are discussed detailedly. The formation of Ag NPs was tracked by surface plasmon resonance (SPR) band of ultraviolet-visible (UV-Vis) spectrum; the morphology of the obtained Ag NPs was characterized through transmission electron microscopy (TEM); energy dispersive X-ray spectroscopy (EDX) and X-ray powder diffraction (XRD) confirmed the formation of metallic Ag NPs.Entities:
Keywords: Aqueous solution; Silver nanoparticles; Sonochemical synthesis; Ultrasonic irradiation
Year: 2013 PMID： 24075535 DOI： 10.1016/j.ultsonch.2013.09.003
Source DB: PubMed Journal: Ultrason Sonochem ISSN： 1350-4177 Impact factor: 7.491