文献类型：期刊文献

英文题名：Synthesis and optical properties of silver nanoparticles stabilized by gemini surfactant

作者：Xu, Jian[1]; Han, Xia[1]; Liu, Honglai[1]; Hu, Ying[1]

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

年份：2006

卷号：273

期号：1-3

起止页码：179

外文期刊名：COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS

收录：;EI(收录号：2006019623867);WOS:【SCI-EXPANDED(收录号:WOS:000234915800027)】；

语种：英文

外文关键词：silver nanoparticles; gemini surfactant; reverse micelles; photoluminescence

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.