One-step synthesis of silver nanoparticles by sonication or heating using amphiphilic block copolymer as templates

被引：20

作者：

Lei, Zhongli ^{[1
]}

Zhang, Liang ^{[1
]}

Wei, Xiangyu ^{[1
]}

机构：

[1] Shaanxi Normal Univ, Coll Chem & Mat Sci, Minist Educ, Key Lab Appl Surface & Colloid Chem, Xian 710062, Peoples R China

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2008年 / 324卷 / 1-2期

关键词：

self-assembly; sonicating; templates;

D O I：

10.1016/j.jcis.2008.04.050

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：

Block copolymer-supported Ag Nps (nanoparticles) have either a "cherry"-like or "raspberry"-like morphology [Antonietti, et al., Adv. Mater. 7 (1995) 1000-1005] depending on the amount of silver nitrate loading and the external conditions. Sonication favors silver nitrate and polyethyleneimine diffusion; the nucleation sites are well distributed in the micellar cores, so it is easy to form the cherry-like Ag NP colloids. However, when the amount of silver nitrate is decreased, it is heating that induces the formation of raspberry-like Ag NP colloids. The Ag NP colloids were investigated by transmission electron microscopy to demonstrate the nanosize dimensions and the location of the Ag NPs in the micelles. X-ray diffraction was employed to determine the crystal structure of the Ag NPs. UV-vis spectroscopy was employed for further qualitative characterization of the optical properties of Ag NPs. (c) 2008 Elsevier Inc. All rights reserved.

引用

页码：216 / 219

页数：4

共 44 条

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