Dispersion control of Fe2O3 nanoparticles using a mixed type of mechanical and ultrasonic milling

被引：25

作者：

Lee, CS ^{[1
]}

Lee, JS ^{[1
]}

Oh, ST ^{[1
]}

机构：

[1] Hanyang Univ, Dept Met & Mat Sci, Ansan 425791, South Korea

来源：

MATERIALS LETTERS | 2003年 / 57卷 / 18期

关键词：

iron oxide; nanoparticle; dispersion control; ultrasonic milling; n-octyl alcohol surfactant;

D O I：

10.1016/S0167-577X(02)01343-5

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

alpha-Fe2O3 nanoparticles with controlled dispersion were obtained by using a mixed type of mechanical and ultrasonic milling with the addition of surfactant, in which particle refinement was done mechanically, and dispersion was done physically and chemically. The particle refinement and dispersion degree of the alpha-Fe2O3 were examined by TEM observation and analyses of turbidity as well as FT-IR spectra of the particle-dispersed solution. Smaller particle size and addition of 1% n-octyl alcohol surfactant make the dispersion effect better. This improved dispersion of the nanoparticles was attributable to increased adsorption of hydroxide ions on alpha-Fe2O3 nanoparticle surfaces as its area increased. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：2643 / 2646

页数：4