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The influence of surface-active substances on the crystallization process and magnetic properties of goethite nanoparticles |
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| Authors: | A N Antonov A A Novakova T S Gendler |
| Institution: | 1. Department of Physics, Moscow State University, Moscow, 119991, Russia 2. Institute of Nanotechnologies in Microelectronics, Russian Academy of Sciences, Moscow, 119991, Russia 3. Institute of Physics of the Earth, Russian Academy of Sciences, Moscow, 123995, Russia |
| Abstract: | To prevent the process of aggregation and growth of ??-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 ??-FeOOH nanoparticles with sizes of 2?C5nm. On the other hand, SAS molecules react with surface atoms of the nanoparticles and form additional compounds. |
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