Nanoparticles having a rutile-like crystalline phase and method of preparing same
Assignee3M Innovative Properties Company
InventorsJohn T. Brady, David S. Arney, Robert W. Ferguson, James A. Higgins, Charles J. Studiner IV
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Abstract
Nanometer-sized particles comprise a mixed oxide of titanium and antimony and are characterized by rutile-like crystal phases. The particles are easily prepared by hydrothemal processing, and may be used as colloids, or in various compositions and articles.
Claims69
A composition comprising a plurality of Ti/Sb mixed oxide nanoparticles in the form of an aqueous colloidal dispersion, wherein the Ti/Sb mixed oxide nanoparticles comprise a rutile-like crystalline phase.
A method for preparing an aqueous colloidal dispersion of Ti/Sb mixed oxide nanoparticles comprising the steps of:
- a) providing an aqueous titania precursor;
- b) providing an aqueous antimony oxide precursor;
- c) combining with mixing both aqueous precursors;
- and
- d) hydrothermally processing the mixture;
- wherein the weight ratio of titanium to antimony is in the range of from about 0.14 to about 11.3.
A composition comprising agglomerated nanoparticles, wherein the agglomerated nanoparticles comprise Ti/Sb mixed oxide nanoparticles comprising a rutile-like crystalline phase.
A nanocomposite precursor comprising a plurality of nanoparticles homogeneously dispersed in an organic binder precursor, wherein the nanoparticles comprise Ti/Sb mixed oxide nanoparticles containing a rutile-like crystalline phase.
A nanocomposite comprising a plurality of nanoparticles dispersed in an organic binder, wherein the nanoparticles comprise Ti/Sb mixed oxide nanoparticles containing a rutile-like crystalline phase.
Dependencies are inferred from the claim text.