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M. A. Prokof’ev, D. G. Berdonosova, I. V. Melikhov, S. S. Berdonosov
The
possibility of preparation of crystal materials containing expended cylindrical
pores
Abstract
By heating in the
inactive media of CuSO4´5H2O crystals precipitated from water
solution and contained 3D inclusions of the matrix solution it was demonstrated
that it is possible to achieve evacuation of such inclusions by their outlet to
the surface of the crystals. The way of mother solution release was detected by
the optical and SEM microscopes and X-ray topography. According to suggested
model the inclusions release occurs because such inclusions extend under the
heating and push on the crystal matrix. It leads to the growth of the solubility
of copper sulfate in mother media is increased. The cylindrical pore formed by
the liner dislocation that exists close to inclusion and comes out on crystal
surface. Mother solution ejects from the bulk of the crystal to its surface.
Finally, the cylindrical pores are formed. As the result it is possible to
obtain porous material that able reversible absorb visible amounts of inert
liquids, alcohol for example, from environment.
Copyright (C) Chemistry Dept., Moscow State University, 2002
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