Low-temperature route for precision synthesis of metal oxide nanoparticles

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United States of America Patent

PATENT NO 9517945
APP PUB NO 20150259217A1
SERIAL NO

14092800

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Abstract

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Methods for making metal oxide nanoparticles, including mixed metal oxides and core-shell metal oxide nanoparticles, are disclosed. A solution comprising a metal carboxylate and a carboxylic acid is combined with a solvent comprising an alcohol heated to a temperature ≦250° C. for an effective period of time to form metal oxide nanoparticles. The metal may be a group IIIA metal, a group IVA metal, a transition metal, or a combination thereof. A metal oxide shell may be deposited onto metal oxide nanoparticles by dispersing the metal oxide nanoparticles in an alcohol, adding a metal carboxylate, and maintaining the reaction at a temperature ≦200° C. for an effective period of time to form core-shell nanoparticles. The nanoparticles may have a relative size dispersity of ≦20%, and may further comprise a plurality of carboxylic acid, carboxylate, and/or alcohol ligands coordinated to the nanoparticles' outer surfaces.

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Patent Owner(s)

Patent OwnerAddress
STATE OF OREGON ACTING BY AND THROUGH THE STATE BOARD OF HIGHER EDUCATION ON BEHALF OF THE UNIVERSITY OF OREGON677 E 12TH AVENUE SUITE 500 EUGENE OR 97403

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hutchison, James E Eugene, US 24 198
Ito, Daisuke Kanagawa, JP 466 2877

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