Filtering article containing titania nanotubes

Patent metadata

Field	Value
Publication number	US-10702833-B2
Application number	US-201816165661-A
Country	US
Kind code	B2
Filing date	Oct 19, 2018
Priority date	Feb 6, 2013
Publication date	Jul 7, 2020
Grant date	Jul 7, 2020

Abstract

Provided in one embodiment is filtering article, comprising: powders comprising bundles of nanotubes, each bundle comprising hollow titania nanotubes. Embodiments of the methods of making and using the filtering articles are also provided.

First claim

What is claimed:

1. A method of making a filtering article, the method comprising:
a) anodizing titanium in an aqueous electrolyte solution to form powders comprising bundles of hollow titania nanotubes;
b) recovering the powders comprising bundles of hollow titania nanotubes from the aqueous electrolyte solution; and
c) integrating a membrane with the powders comprising bundles of hollow titania nanotubes to form the filtering article.

2. The method of claim 1 , wherein the aqueous electrolyte solution comprises at least about 1 mM chloride and has a pH in the range of about 1 to about 7.

3. The method of claim 1 , the method further comprising sintering the powders comprising bundles of hollow titania nanotubes to form the filtration article.

4. The method of claim 1 , the method further comprising functionalizing at least some of the hollow titania nanotubes with at least one of a hydrophobic and an olephobic material.

5. A method of making a filtering article, the method comprising:
a) anodizing titanium in an aqueous electrolyte solution to form powders comprising bundles of hollow titania nanotubes; and
b) recovering the powders comprising bundles of hollow titania nanotubes from the aqueous electrolyte solution; and
c) forming the powders comprising bundles of hollow titania nanotubes into a hollow cylinder.

6. The method of claim 5 , wherein the hollow cylinder has an internal diameter from about 0.5 cm to about 10 cm.

Assignees

• Univ Northeastern

Inventors

• Panaitescu Eugen
• Menon Latika

Classifications

• B01D2323/00

  Details relating to membrane preparation · CPC title

• B01D71/024 Primary

  Oxides · CPC title

• B01D15/08

  Selective adsorption, e.g. chromatography · CPC title

• B01D69/043

  characterised by the tube diameter · CPC title

• C25D11/26

  of refractory metals or alloys based thereon · CPC title