Raman spectroscopy of cobalt ferrite nanocomposite in silica matrix prepared by sol-gel method

被引：28

作者：

da Silva, S. W.

Pedroza, R. C.

Sartoratto, P. P. C.

Rezende, D. R.

da Silva Neto, A. V.

Soler, M. A. G.

Morais, P. C.

机构：

[1] Univ Brasilia, Inst Fis, BR-70719970 Brasilia, DF, Brazil

[2] Univ Fed Goias, Inst Quim, BR-74001970 Goiania, Go, Brazil

来源：

JOURNAL OF NON-CRYSTALLINE SOLIDS | 2006年 / 352卷 / 9-20期

关键词：

nanocrystals; Raman scattering; optical spectroscopy; nanocomposites; nanoparticles; Raman spectroscopy; silica; sol-gels (xerogels); water in glass;

D O I：

10.1016/j.jnoncrysol.2006.01.054

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The synthesis and the optical characterization of CoFe2O4-SiO2 nanocomposites is reported in this study. The interaction of the nanoparticles with the host matrix in the nanocomposites prepared by sol gel was investigated using Raman spectroscopy. Samples with different nanoparticle concentrations as well as pure silica samples (used as references) have been investigated as a function of different thermal treatments. Our findings show that the investigated composite samples reveal a competition among Si-O-Si and Si-OH bonds. The Raman data indicated that the CoFe2O4 nanoparticles interact with both the silica or silanol groups in the cavities in which they are formed. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：1602 / 1606

页数：5

共 14 条

[1] IR and NMR study of nanoparticle-support interactions in a Fe2O3-SiO2 nanocomposite prepared by a sol-gel method [J].