Abstract
Lanthanum aerogels with high specific surface area up to 288 m2·g−1 are synthesized by a modified sol-gel method combined with supercritical fluid ethanol drying. The lanthanum aerogels can be transformed into porous nanostructure composed of hexagonal La(OH)3 crystal nanostructures with the specific surface area of 35 m2·g−1 in large quantities after heat treatment at 600 °C in air. The room temperature magnetism of hexagonal La(OH)3 crystal nanostructures is investigated by the density of states based on first-principles calculations. This work brings a promising route that can quickly produce lanthanum-based porous nanostructures in large quantities.
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