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Ultralow-Density, Transparent, Superamphiphobic Boehmite Nanofiber Aerogels and Their Alumina Derivatives Gen Hayase,*,†,§ Kazuya Nonomura,†,§ George Hasegawa,‡ Kazuyoshi Kanamori,*,† and Kazuki Nakanishi† †
Department of Chemistry, Graduate School of Science, Kyoto University, Kitashirakawa, Sakyo-ku, Kyoto 606-8502, Japan Department of Energy and Hydrocarbon Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Nishikyo-ku, Kyoto 615-8510, Japan
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S Supporting Information *
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ow-density materials have been attracting interest from researchers. Since the invention of aerogels in 1931,1 many researchers have produced aerogel materials with various chemical compositions.2,3 The most common one is silica aerogels, which show unique properties such as low thermal conductivity, high surface area, visible-light transparency, and low refractive index.4,5 One of the most important techniques for designing aerogels is the precise controls over pore properties including morphology and porosity, which leads to improved performance in, for example, thermal insulation and catalytic ability. In recent years, the number of reports on ultralow-density (
