Selenium nanomaterials and methods of making and using same

Patent metadata

Field	Value
Publication number	US-2025083123-A1
Application number	US-202418956267-A
Country	US
Kind code	A1
Filing date	Nov 22, 2024
Priority date	Oct 13, 2015
Publication date	Mar 13, 2025
Grant date	—

Abstract

Articles and method of making articles including a solid porous material having a selenium nanomaterial bound to a surface of and within the solid porous material. The article may be a include no polymeric stabilizer or proteinaceous stabilizer. The solid porous material may be a sponge, a film, a fabric, a non-woven material, or a metal-organic framework (MOF), or a combination thereof. The article may be produced by treating a solid porous material with an aqueous selenous acid solution and heating the solid porous material to form the selenium nanomaterial on the surface of and within the solid porous material.

First claim

What is claimed is:

1 . A method of making an article comprising a selenium nanomaterial, the method comprising:
treating a solid porous material with an aqueous selenous acid solution; and heating the solid porous material to a temperature of at least 100 degrees Celsius and up to 170 degrees Celsius to form the selenium nanomaterial on the surface of and within the solid porous material.

2 . The method of claim 1 wherein treating the solid porous material with and aqueous selenous acid comprises combining an aqueous selenous acid and an aqueous reducing agent with the solid porous material.

3 . The method of claim 2 wherein the reducing agent is an acid.

4 . The method of claim 2 wherein the reducing agent is hydroquinone.

5 . The method of claim 2 wherein the solid porous material has a hydroxylated surface.

6 . The method of claim 2 wherein the solid porous material comprises activated carbon.

7 . The method of claim 1 wherein the solid porous material comprises a sponge comprising a hydrophilic surface, a polyamide, a polyurethane, or fibers having a diameter in a range of 10 μm to 30 μm, or a combination thereof.

8 . A method of making an article comprising a selenium nanomaterial, the method comprising:
immersing a solid porous material in a composition including selenium ions; and then heating the solid porous material to a temperature of at least 100 degrees Celsius and up to 170 degrees Celsius to form the selenium nanomaterial on the surface of and within the solid porous material.

9 . The method claim 8 further comprising treating the solid porous material with a reducing agent before immersing the solid material in the composition including selenium ions.

10 . The method of claim 8 further comprising treating the solid porous material with a reducing agent while immersing the solid material in the composition including selenium ions.

11 . The method of claim 10 wherein the composition including selenium ions comprises an aqueous selenous acid solution.

12 . The method of claim 11 wherein the solid porous material comprises polyurethane.

13 . The method of claim 12 wherein the article has a removal capacity of at least 1000 milligrams mercury per gram of selenium.

14 . The method of claim 11 wherein the solid porous material comprises a sponge, a film, a fabric, a non-woven material, or a metal-organic framework (MOF), or a combination thereof.

Assignees

• Univ Minnesota

Inventors

• Abbas Abdennour
• Ahmed Snober

Classifications

• C02F2103/007

  Contaminated open waterways, rivers, lakes or ponds · CPC title

• B01J20/3212

  consisting of a polymer obtained by reactions otherwise than involving only carbon to carbon unsaturated bonds · CPC title

• B01J20/28045

  Honeycomb or cellular structures; Solid foams or sponges · CPC title

• B01D2257/602

  Mercury or mercury compounds · CPC title

• B01D2253/25

  Coated, impregnated or composite adsorbents · CPC title