Nanoparticles containing titanium oxide
View Patent ↗A titanium oxide nanoparticle includes anatase titanium oxide, and may be a nanofiber having a minimum dimension less than 200 nanometers and having an aspect ratio greater than 20:1. A titanium oxide nanoparticle including anatase titanium oxide may include a dopant metal and/or a dopant nonmetal, and may be in a form other than a nanosphere. A method of making nanoparticles includes heating a reaction mixture in an autoclave, where the reaction mixture includes a titanium source and a polar organic solvent.
1. A nanofiber, comprising:
anatase titanium oxide,
where the nanofiber has a longest dimension of at least 2 micrometers, and an aspect ratio greater than 20:1.
2. The nanofiber of claim 1 , having a longest dimension of at least 5 micrometers.
3. The nanofiber of claim 1 , further comprising at least one element selected from the group consisting of a dopant metal and a dopant nonmetal.
4. The nanofiber of claim 3 , comprising a dopant metal selected from the group consisting of calcium, cobalt, nickel, copper, gallium, strontium, yttrium, zirconium, palladium, silver, tin, lanthanum and platinum.
5. The nanofiber of claim 4 , comprising a dopant nonmetal selected from the group consisting of boron, carbon, nitrogen, sulfur and fluorine.
6. The nanofiber of claim 3 , comprising a dopant nonmetal selected from the group consisting of boron, carbon, nitrogen, sulfur and fluorine.
7. The nanofiber of claim 1 , where the nanofiber is a nanobelt having a thickness of at most 10 nanometers.
8. The nanofiber of claim 1 , where the nanofiber is a nanosheet having a width greater than 200 nanometers.
9. The nanofiber of claim 1 , where the nanofiber is a nanoprism.
10. The nanofiber of claim 1 , where the nanofiber is a nanowire having a longest dimension of at least 1,000 nanometers.
11. A nanoparticle, comprising:
anatase titanium oxide, and
at least one element selected from the group consisting of a dopant metal and a dopant nonmetal;
where the nanoparticle is not a nanosphere, and
the nanoparticle has a longest dimension of at least 2 micrometers.
12. The nanoparticle of claim 11 , comprising a dopant metal selected from the group consisting of calcium, cobalt, nickel, copper, gallium, strontium, yttrium, zirconium, palladium, silver, tin, lanthanum and platinum.
13. The nanoparticle of claim 12 , comprising a dopant nonmetal selected from the group consisting of boron, carbon, nitrogen, sulfur and fluorine.
14. The nanoparticle of claim 11 , comprising a dopant nonmetal selected from the group consisting of boron, carbon, nitrogen, sulfur and fluorine.
15. The nanoparticle of claim 11 , where the nanoparticle is in a form selected from the group consisting of a nanowire, a nanobelt, a nanosheet, and a nanoprism.
16. The nanoparticle of claim 15 , where the nanoparticle is a nanobelt having a thickness of at most 10 nanometers.
17. The nanoparticle of claim 15 , where the nanoparticle is a nanosheet having a width greater than 200 nanometers.
18. The nanoparticle of claim 15 , where the nanoparticle is a nanoprism.