Characteristics, Chemical Modification Processes as well as the Application of Silica and its Modified Forms

Abstract

The variety of chemical modifications of the surface of silica and its modified forms cause these materials to find a consistently wider scope of application. In the publication, the characteristics of silica, silica gel, aerogel and xerogel are presented. The obtainment, application and properties of these materials are discussed. Methods of chemical modifications of surface structures with the use of different chemical compounds are presented. Special attention is turned to the behavior of silica and its modified form during the adsorption process. The main applications of silica and its different forms in analytical chemistry are also discussed.

Keywords:

• Chemical modification
• silica
• silica gel
• xerogel
• aerogel

ACKNOWLEDGMENTS

The past of work described in this paper has been financed in the framework of grants attributed by the Ministry of Science and High Education.