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The system of two miscible liquids as a generator of nanoparticles. The synthesis of BaSO4 nanoparticles upon contact of precursor solutions in water and tetrahydrofuran
- Source :
- Тонкие химические технологии, Vol 6, Iss 4, Pp 40-46 (2011)
- Publication Year :
- 2011
- Publisher :
- MIREA - Russian Technological University, 2011.
-
Abstract
- The system of two miscible liquids is presented as a generator of nanoparticles. This approach was tested experimentally with the synthesis of barium sulfate nanoparticles under non-equilibrium conditions after contact of perfectly miscible solutions as an example.The experimental results were compared with the dynamic model of transition layer. According to this model the smallest size of obtained particles is determined by the size of associates in the nucleation stage formed inside the rotating Bernard cells. The hypothesis of BaSO4 creation is based on the idea that the interface between a Bernard cell and the surrounding solution has barrier properties. The permeability of this barrier depends on the viscosity of the solution. The influence of the solvent polarity on the structure and size of nanoparticles was investigated. The dependence of the structure and size of the nanoparticles on the water/THF ratio was found. The influence of viscosity of the solution on the size of the nanoparticles was found and explained in terms of dynamic transition layer.
- Subjects :
- perfectly miscible liquids
interface of perfectly miscible liquids
interfacial tension between moving liquids
dynamic transition layer
bernard cell and barrier effect for the particles
measurement of particles size by different methods
nanoparticles in nucleation stage and crystallization stage
coexistence of crystal and nucleate forms of baso4
dependence on the size of crystal and nuclei forms on the polarity of mixed solvent
influence of viscosity of the solvent on the size of baso4 nanoparticles
Chemistry
QD1-999
Subjects
Details
- Language :
- Russian
- ISSN :
- 24106593 and 26867575
- Volume :
- 6
- Issue :
- 4
- Database :
- Directory of Open Access Journals
- Journal :
- Тонкие химические технологии
- Publication Type :
- Academic Journal
- Accession number :
- edsdoj.00f070cfd85849318c98d5719988c9b4
- Document Type :
- article