In-Situ Acid Catalysis Strategy to Achieve Rapid Ambient Pressure Drying Preparation of Aerogels

Aerogel possesses distinctive features rendering it widely applicable in thermal insulation. Nevertheless, supercritical fluid drying (SCFD) method and freeze-drying employed for aerogels necessitates the complex process, resulting in heightened energy consumption and more risk. To achieve the cost-effective preparation of silica aerogel, we introduce an in-situ acid catalysis strategy for rapidly crafting high-performance SiO2 aerogel materials under ambient conditions. The resultant SiO2 aerogels exhibit remarkable porosity (95