Synthesis and optical properties of silver nanoparticles stabilized by gemini surfactant

被引：115

作者：

Xu, J

Han, X

Liu, HL ^{[1
]}

Hu, Y

机构：

[1] E China Univ Sci & Technol, Dept Chem, Adv Mat Lab, Shanghai 200237, Peoples R China

[2] E China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China

来源：

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 2006年 / 273卷 / 1-3期

基金：

中国国家自然科学基金;

关键词：

silver nanoparticles; gemini surfactant; reverse micelles; photoluminescence;

D O I：

10.1016/j.colsurfa.2005.08.019

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Silver nanoparticles were prepared by the reduction of silver nitrate using NaBH4 as reducing agent in water-in-oil reverse micelles system, in which gemini surfactant 2-hydroxy-1, 3-bis(octadecyldimethylammonium) propane dibromide (18-3(OH)-18) was used as stabilizer. The results of TEM, AFM and UV-vis absorption spectra show that the silver nanoparticles have a narrow size distribution. The results of UV-vis absorption spectra and XPS reveal that the gemini surfactant 18-3(OH)-18 can stabilize the silver nanoparticles for at least 2 months. The 18-3(OH)-18-capped silver nanoparticles exhibit visible luminescence at 448 nm upon photoexcitation at 309 nm due to metal-ligand charge transfer absorption. (c) 2005 Elsevier B.V. All rights reserved.

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页码：179 / 183

页数：5

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