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S. S. Berdonosov

The Aggregation of Primary Nano and Microparticles Resulting in Formation of Hollow Structures

Abstract

It was demonstrated that the formation of hollow structures with the size from few micron to several tens of millimeters from oversaturated vapor or solution could be caused by the following reasons: a) fast solvent evaporation from micro-drops of solution and crystallization of the dissolved substances in the surface layer of the drop; b) chemical reaction between substances from the drop and substances from outside the drop; c) aggregation of primary nanoparticles in the agitated liquid; d) aggregation of the particles that arise upon the thermohydrolysis of the initial solid compound. The examples of preparations from hollow particles using the above mentioned routes are given and the peculiarities of their formation are discussed.
Moscow University Chemistry Bulletin.
2009, Vol. 50, No. 5, P. 334
   

Copyright (C) Chemistry Dept., Moscow State University, 2002
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