Silica aerogels have potential applications in various fields such as catalysis, insulation, and drug delivery. In this study, we report a facile method for the preparation of transparent and biocompatible silica aerogels using choline dihydrogen phosphate ionic liquid as the solvent and catalyst. The aerogels were prepared via sol-gel reaction of tetraethyl orthosilicate in the ionic liquid followed by supercritical drying. The resulting aerogels showed excellent transparency, high porosity, and low density. The biocompatibility of the aerogels was evaluated using in vitro cytotoxicity tests, and the results showed no significant cytotoxic effects. The prepared aerogels are expected to have potential applications in biomedicine and other fields where transparent and biocompatible materials are required.

Silica aerogels, choline dihydrogen phosphate ionic liquid, transparent

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