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Application of sol-gel process for preparation of functional materials

Gaishun V. E., Demidenko O. M., Kosenok Y. A., Kovalenko D. L., Semchenko A. V., Strek W.

Journal of Automation Mobile Robotics and Intelligent Systems

2009

Vol. 3, No. 4

121-123

A development of high-performance materials for electronics, optics, ceramics fabrication is restrained by traditional modes of their production. Basic technologies for materials include high-temperature physical and chemical processes and require special conditions to attain desired properties of final products. Advanced preparation methods for materials with new features are feasible on the basis of colloid-chemical processes and nanochemistry. In this respect the sol-to-gel transformation followed by solidification and chemical modification are of great interest to attain a variety of different functional properties of materials.

An Incorporation of copper and its oxides and chalcogenides into silica sol-gel materials

Gurin V. S., Alexeenko A. A., Prakapenka V. B., Kovalenko D. L., Yumashev K. V., Prokoshin P. V.

Materials Science

2002

Vol. 20, No. 2

29-37

Recent results concerning fabrication and optical features of the metal- and semiconductornanoparticles doped sol-gel are reviewed. The nanoparticles of copper, copper oxides, sulfides and selenides have been produced by means of the modified silica-based sol-gel technique within the two types of materials: amorphous silica films and monolithic glasses. The features of the optical absorption are discussed in dependence on the chemical composition. Optical properties are varied with element composition of the compounds, size of particles, their concentration, etc. The quantum confinement and partial surface chemical modification of the nanoparticles are considered as possible reasons for appearance of optical features at the copper multivalent compounds.