Formation and characterization of silver nanoparticles in aqueous solution via ultrasonic irradiation

被引：81
作者：
He, Chaodong
Liu, Lanlan
Fang, Zeguo
Li, Jia
Guo, Jinbao
Wei, Jie [1 ]
机构：
[1] Beijing Univ Chem Technol, Coll Mat Sci & Engn, Beijing 100029, Peoples R China
来源：
ULTRASONICS SONOCHEMISTRY | 2014年 / 21卷 / 02期
基金：
中国国家自然科学基金; 高等学校博士学科点专项科研基金;
关键词：
Silver nanoparticles; Sonochemical synthesis; Ultrasonic irradiation; Aqueous solution; SIZE-CONTROLLED SYNTHESIS; GOLD NANOPARTICLES; COLLOIDAL SILVER; METAL PARTICLES; POLYOL METHOD; REDUCTION; SUSPENSIONS; FABRICATION; CHEMISTRY; WATER;
D O I：
10.1016/j.ultsonch.2013.09.003
中图分类号：
O42 [声学];
学科分类号：
070206 ; 082403 ;
摘要：
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)-O-center dot) 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. (C) 2013 Elsevier B.V. All rights reserved.
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收藏
页码：542 / 548
页数：7
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