Abstract
Monolithic aerogels and aerogel coatings of hydrated V 2 O 5 , containing up to 10 mol% GeO 2 , were prepared from metal alkoxides by hydrolysis and autoclave drying. The porosity of the monolithic aerogels was > 90%. The aerogels consisted of microfibrous V 2 O 5 polymer. The X-ray diffraction pattern of the aerogels was different from that of crystalline V 2 O 5 . Microhardness of the aerogels increased with addition of GeO 2 . DC conductivity of the bulk aerogels was about one order of magnitude lower than that of the bulk xerogels. Dip-coated V 2 O 5 gel coatings were dried supercritically. The refractive index of the aerogel coatings were
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