METAL-COATED AEROGEL OF NANOPOROUS MATERIALS AND PREPARING METHOD THEREOF

摘要

An aerogel and a method for manufacturing the same are provided to improve adiabatic property, porosity, and transparency of the aerogel, by forming a gold or silver coated layer on a surface of a wet gel through chemisorption of thiol groups and gold or silver. A wet gel is prepared by a sol-gel process of aerogel precursor such as metal alkoxide or water glass. A surface of the wet gel is reformed with thiol groups by submerging the wet gel into a mixture solution of sulfur-containing compound and alcohol. A gold or silver coated layer is formed on the surface of the wet gel by submersing the surface-reformed wet gel in a gold or silver nanoparticle solution so that gold or silver is self assembled on the surface of the wet gel through chemisorption of thiol groups and gold or silver. The wet gel coated with the gold or silver coating layer is dried.