Composite nanomaterials and micromaterials, films of same, and methods of making and uses of same

Patent metadata

Field	Value
Publication number	US-2017174526-A1
Application number	US-201515304953-A
Country	US
Kind code	A1
Filing date	Apr 20, 2015
Priority date	Apr 18, 2014
Publication date	Jun 22, 2017
Grant date	—

Abstract

Composite nano- and micromaterials and methods of making and using same. The composite materials comprise crystalline materials (e.g., binary and ternary vanadium oxides) in an amorphous or crystalline material (e.g., oxide, sulfide, and selenide materials). The materials can be made using sol-gel processes. The composite materials can be present as a film on a substrate. The films can be formed using preformed composite materials or the composite material can be formed in situ in the film forming process. For example, films of the materials can be used in fenestration units, such as insulating glass units deployed within windows.

First claim

1 . A composition comprising a crystalline vanadium oxide nanomaterial and/or micromaterial encapsulated in an amorphous or crystalline oxide, sulfide, or selenide matrix.

2 . The composition of claim 1 , wherein the vanadium oxide nanomaterial and/or micromaterial is in the form of nanoparticles, microparticle, nanowires, microwires, nanorods, microrods, nanospheres, microspheres, nanostars, microstars, or a combination thereof.

3 . The composition of claim 1 , wherein the amorphous oxide matrix comprises silicon oxide, titanium oxide, vanadium oxide, zinc oxide, hafnium oxide, cerium oxide, molybdenum oxide, or a combination thereof.

4 . The composition of claim 1 , wherein the vanadium oxide nanomaterial and/or vanadium oxide micromaterial is doped.

5 . A substrate comprising a film of the composition of claim 1 disposed on at least a portion of a surface of the substrate.

6 . The substrate of claim 5 , wherein the substrate is glass, silicon oxide, sapphire, alumina, polymer, plastic, or indium tin oxide-coated glass.

7 . The substrate of claim 5 , wherein the film of the composition of claim 1 disposed on the at least a portion of a surface of the substrate has a thickness of 50 nm to 5 microns.

8 . The substrate of claim 5 , wherein the substrate is part of a window unit, insulating glass unit, or other part of a fenestration component.

9 . The substrate of claim 8 , wherein the window unit is a double-paned insulating glass unit and the at least a portion of the surface of the substrate is an interior surface of the double-paned insulating glass unit.

10 . A method of making a substrate comprising the composition of claim 1 disposed on at least a portion of a surface of the substrate comprising:
a) optionally, forming a plurality of hydroxyl groups on the at least a portion of a surface of the substrate; and
b) contacting the at least a portion of the surface of the substrate with a film forming composition such that the composition of claim 1 is formed on the at a portion of the surface of the substrate; and
c) optionally, repeating b) using the substrate from b) until a desired thickness of the composition of claim 1 is formed on the at least a portion of the surface of the substrate.

11 . The method of claim 10 , wherein the film forming composition comprises preformed crystalline vanadium oxide nanomaterial and/or vanadium oxide micromaterial encapsulated in an amorphous or crystalline oxide, sulfide, or selenide matrix.

12 . The method of claim 10 , wherein the film forming composition comprises crystalline vanadium oxide nanomaterial and/or micromaterial, an encapsulating material precursor, a catalyst, and an aqueous solvent.

13 . The method of claim 10 , further comprising annealing the composition of claim 1 formed on the at least a portion of the surface of the substrate in b) and/or after at least one of the compositions of claim 1 formed on the at least a portion of the surface of the substrate in c).

14 . The method of claim 10 , wherein the substrate is a glass, silicon oxide, sapphire, alumina, polymer, plastic, or indium tin oxide-coated glass.

15 . The method of claim 10 , wherein the hydroxyl groups are formed by contacting the at least a portion of the substrate with a hydroxylating solution, ozone, or a plasma comprising a hydroxylating oxidant species.

16 . The method of claim 10 , wherein the layer of the composition of claim 1 on at least a portion of the surface of the substrate is formed by spray coating, spin coating, roll coating, wire-bar coating, dip coating, powder coating, self-assembly, or electrophoretic deposition.

Assignees

• Univ New York State Res Found

Inventors

• Banerjee Sarbajit
• Pelcher Kate E

Classifications

• C01P2004/64

  Nanometer sized, i.e. from 1-100 nanometer · CPC title

• C03C2214/03

  surface treated, e.g. coated · CPC title

• C01P2002/77

  by unit-cell parameters, atom positions or structure diagrams · CPC title

• C01P2004/16

  Nanowires or nanorods, i.e. solid nanofibres with two nearly equal dimensions between 1-100 nanometer · CPC title

• C03C17/008

  comprising a mixture of materials covered by two or more of the groups C03C17/02, C03C17/06, C03C17/22 and C03C17/28 · CPC title