Impact of Solvent Structuring in Water/tert-Butanol Mixtures on the Assembly of Silica Nanoparticles to Aerogels


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Soft matter structuring is a useful tool for the preparation of wellstructured inorganic materials. Here, we report a strategy using a structured solvent based on binary mixtures as a directing agent for silica nanoparticles in aerogel elaboration. The water/alcohol/TEOS systems were effectively characterized as surfactant-free microemulsions. The enhanced solvent structuring, however, disappears upon the reaction with TEOS, and assembly is directed by solvent structuring found in the binary mixtures.

Lire l'article DOI: 10.1021/acs.langmuir.9b00655
Robert Winkler, Elisa Re, Guilhem Arrachart and Stephane Pellet-Rostaing Langmuir 35, 7905−7915 (2019)