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

被引：1
|
作者：
Antonov, A. N. [1 ]
Novakova, A. A. [2 ]
Gendler, T. S. [3 ]
机构：
[1] Moscow MV Lomonosov State Univ, Dept Phys, Moscow 119991, Russia
[2] Russian Acad Sci, Inst Nanotechnol Microelect, Moscow 119991, Russia
[3] Russian Acad Sci, Inst Phys Earth, Moscow 123995, Russia
来源：
MOSCOW UNIVERSITY PHYSICS BULLETIN | 2012年 / 67卷 / 02期
关键词：
alpha-FeOOH nanoparticles; surface-active substances; magnetic properties; superparamagnetism; Mossbauer spectroscopy; transmission electron microscopy; PARTICLES;
D O I：
10.3103/S002713491202004X
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
To prevent the process of aggregation and growth of alpha-FeOOH nanoparticles, during chemical syntheses various surface-active substances (SASs) with a concentration of 3 g/dm(3) 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 alpha-FeOOH nanoparticles with sizes of 2-5nm. On the other hand, SAS molecules react with surface atoms of the nanoparticles and form additional compounds.
引用
收藏
页码：230 / 232
页数：3
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