Silica displaying red and textural mesoporosity sinthesized by double templating procedure

The Sol-Gel method is one of the techniques used to synthesize materials with a bimodal and hierarchical pore structure, which can be verified by different characterization techniques. The techniques of characterization of the materials of Silica exhibiting multimodal hierarchical porosity are Scanning Electron Microscopy (SEM) and Nitrogen adsorption-desorption isotherms, which serve to corroborate that there are mesopores with diameters in the 2-4 nm range in the internal part of the silica particles originated by the supramolecular molding by the surfactant. Furthermore, textural mesoporous in the 9-22 nm range are a result of voids between silica particles. In addition, we can distinguish this type of network mesoporosity from the textural mesoporosity originated by the spaces or voids left between the silica particles, which falls in the 9-22 nm range. The alkylammonium surfactants and Poly (ethylene glycol) have been used to control the internal structure and the aggregation of particles, respectively.