A highly photoreflective and heat-insulating alumina film composed of stacked mesoporous layers in hierarchical structure.

Kodaira, Tetsuya; Suzuki, Yo-Hei; Nagai, Naofumi; Matsuda, Gozo; Mizukami, Fujio · Adv Mater · 2015

basic_science · Level V

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Abstract

An alumina film with highly photoreflective and heat-insulating properties can be simply synthesized using a sol of fibrous boehmite with an additive. The entangled fibers bring about mesopores among them and form stacked 2D nonwoven-like nanosheets. The porosity and the layered structure of alumina accompanying the heat resistivity provide the upper properties that are usually difficult to realize simultaneously.