Method for producing zirconium dioxide nanoparticles in the presence of an amino acid
AssigneeMathym
InventorsAmandine Venier, Erik Camposilvan, Miguel Comesana-Hermo
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Abstract
This invention relates to a process for preparing nanoparticles of zirconium dioxide, ZrO2, by hydrothermal treatment of a zirconium IV compound in the presence of water, at a pH below 7, and at least one amino acid comprising at least 4 carbon atoms, said amino acid exhibiting an acid function to amine function ratio greater than or equal to 1. The invention also relates to zirconium dioxide nanoparticles having a visible transmittance greater than or equal to 20% at 400 nm and greater than or equal to 95% at 800 nm measured in water at a concentration of 40% by weight.
Claims13
A process for preparing nanoparticles of zirconium dioxide, ZrO2, by hydrothermal treatment, said process comprising hydrothermally treating a zirconium IV compound in the presence of water, at a pH below 7, and at least one amino acid comprising at least 4 carbon atoms, said amino acid exhibiting an acid function to amine function ratio greater than or equal to 1.
Dependencies are inferred from the claim text.