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متالوژی::
پیشماده سیلیکا
Observe that the main difference occurs when adding the silica precursor (TEOS).
Whatever the mechanism proposed to obtain mesoporous materials, a common requirement is the need of an attractive interaction between the hydrophilic heads of the surfactant template and the silica precursor to avoid phase separation between them.
This is a very difficult condition to fulfill when producing mesoporous cal- cium phosphates, as stated in the previous section, but an easy task to achieve with silica precursors.
There are two synthetic approaches for the production of inorganic mesoporous materials with organic functionalities within their structure: (1) grafting of organic functional- ity, which consists of the modification of the material surface of a pure silica mate- rial; and (2) co-condensation with an organic functionality, which consists of the simultaneous condensation of the silica precursors and the organic functionalizing moieties (Hoffmann et al. 2006).
This is an alternative functionalization method of ordered mesoporous silica that is based on the co-condensation, during the synthetic process, of the silica precursors together
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