Modular Adaptable Hybrid Silica Gels
The hybrid silica gels are synthetically linked with each other via siloxane bonds. The inorganic component consists of one to three siloxy functions and serves as a substrate for the organic component. Via the organic component, the pore size as well as the position and shape of the lattice structure is determined and is adapted to different active substances and active substance groups. This area of hybrid materials has the ability to act as a coupling partner for the stressors via covalent bonds.
The hybrid silica gels used are produced in a variety of ways within the so called sol-gel process. In the process, a three-dimensional network develops via hydrolysis and condensation. The structured hybrid material obtained is able to irreversibly fix the organic residue in the aquatic environment through a chemical reaction in the aqueous milieu at different pH value influences.
ESEM images of diverse hybrid silica gels (scale: left 30 µm, right 10 µm).