The influence of surface-active substances on the crystallization process and magnetic properties of goethite nanoparticles

被引：0
|
作者：
A. N. Antonov
A. A. Novakova
T. S. Gendler
机构：
[1] Moscow State University,Department of Physics
[2] Russian Academy of Sciences,Institute of Nanotechnologies in Microelectronics
[3] Russian Academy of Sciences,Institute of Physics of the Earth
来源：
Moscow University Physics Bulletin | 2012年 / 67卷
关键词：
α-FeOOH nanoparticles; surface-active substances; magnetic properties; superparamagnetism; Mossbauer spectroscopy; transmission electron microscopy;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
To prevent the process of aggregation and growth of α-FeOOH nanoparticles, during chemical syntheses various surface-active substances (SASs) with a concentration of 3 g/dm3 were added into the solution. The applied SASs were: cetylpyridinium chloride (CPC), sodium dodecyl sulphate (SDS), and complexone EDTA. Using various methods it was found that SAS molecules have a dual effect on the obtained nanoparticles: on one hand SAS application increases the number of small α-FeOOH nanoparticles with sizes of 2–5nm. On the other hand, SAS molecules react with surface atoms of the nanoparticles and form additional compounds.
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页码：230 / 232
页数：2
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