Hydrothermal synthesis of alpha Fe2O3 nanoparticles capped by Tween-80

被引：36
|
作者：
Khan, Yaqoob [2 ]
Durrani, S. K. [1 ]
Siddique, M. [3 ]
Mehmood, Mazhar [2 ]
机构：
[1] PINSTECH, Div Mat, Islamabad, Pakistan
[2] Pakistan Inst Engn & Appl Sci, Dept Chem & Mat Engn, Islamabad 45650, Pakistan
[3] PINSTECH, Div Phys, Islamabad, Pakistan
来源：
MATERIALS LETTERS | 2011年 / 65卷 / 14期
关键词：
Hematite; Nanoparticles; Functional surfaces; Crystal growth; IRON-OXIDE NANOPARTICLES; ALPHA-FE2O3; NANOSTRUCTURES; GAS SENSORS; SURFACE; SIZE;
D O I：
10.1016/j.matlet.2011.04.068
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Surface modified alpha-Fe2O3 nanoparticles capped by Tween-80 were prepared by the hydrothermal treatment of Fe(NO3)(2 center dot)9H(2)O at 200 degrees C. The spherical nanoparticles possessed good crystallinity with an average crystallite size of 21 nm. The presence of Tween-80 on the surface of alpha-Fe2O3 was confirmed by FTIR and Mossbauer analysis. The surfactant was effective in controlling the particle shape and restricted the particle growth to a narrow range around 40-60 nm as observed by scanning electron microscopy. The alpha-Fe2O3 nanoparticles obtained without Tween-80 were irregular in shape with a wide size distribution in the range of 150-300 nm. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码：2224 / 2227
页数：4
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