Synthesis and characterization of ultrafine CeF3 nanoparticles modified by catanionic surfactant via a reverse micelles route

被引：54

作者：

Zhang, Hui ^{[1
]}

Li, Hongfei ^{[1
]}

Li, Deqian ^{[1
]}

Meng, Shulan ^{[1
]}

机构：

[1] Chinese Acad Sci, Changchun Inst Appl Chem, Key Lab Rare Earth Chem & Phys, Grad Sch, Changchun 130022, Peoples R China

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2006年 / 302卷 / 02期

基金：

中国国家自然科学基金;

关键词：

catanionic surfactant; reverse micelles; cerium fluoride; nanoparticles; modification; fluorescence;

D O I：

10.1016/j.jcis.2006.06.062

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：

In this article, we firstly reported on the synthesis and characterization of ultratine CeF3 nanoparticles (NPs) modified by catanionic surfactant via a reverse micelles-based route. The catanionic surfactant PN was prepared by mixing the di(2-ethylhexyl) phosphoric acid (DEHPA) and primary amine (N1923) with 1:1 molar ratio. It exhibited a high surface activity and formed much small reverse micelles in comparison with its individual component (DEHPA or N1923). The PN reverse micelles were then used as templates to prepare ultrafine CeF3 NPs. The narrow distributed nanoparticles have an average diameter 1.8 nm. FTIR spectra indicated that there existed strong chemical interactions between nanoparticles and the adsorbed surfactants. The modification resulted in the FFIR peak position of P=O shifting to lower energy. Due to the effect of modification and small size, the CeF3 NPs showed a remarkable red shift of 54 mn in the fluorescence emission in comparison with that of bulk material and a red shift of 18 nm in contrast with that of the normal CeF3 NPs with an average diameter of 16 nm. (c) 2006 Elsevier Inc. All rights reserved.

引用

页码：509 / 515

页数：7

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