CuCrFe oxide antimicrobial treatment composition

Patent metadata

Field	Value
Publication number	US-12227429-B2
Application number	US-202418639176-A
Country	US
Kind code	B2
Filing date	Apr 18, 2024
Priority date	Jan 17, 2019
Publication date	Feb 18, 2025
Grant date	Feb 18, 2025

Abstract

Methods of forming spinel ferrite nanoparticles containing a chromium-substituted copper ferrite as well as properties (e.g. particle size, crystallite size, pore size, surface area) of these spinel ferrite nanoparticles are described. Methods of preventing or reducing microbe growth on a surface by applying these spinel ferrite nanoparticles onto the surface in the form of a suspension or an antimicrobial product are also described.

First claim

The invention claimed is:

1. A CuCrFe oxide antimicrobial treatment composition, comprising:
spinel ferrite nanoparticles, and
a liquid medium;
wherein the spinel ferrite nanoparticles comprise at least one chromium-substituted copper ferrite selected from the group consisting of CuCr 0.4 Fe 1.6 O 4 , CuCr 0.6 Fe 1.4 O 4 , and CuCr 0.8 Fe 1.2 O 4 , and
wherein the spinel ferrite nanoparticles have an angular, spinel, or irregular form, and are suspended in the liquid medium.

2. The antimicrobial treatment composition of claim 1 , comprising the spinel ferrite nanoparticles in an amount of 50 μg/mL to 100 mg/mL.

3. The antimicrobial treatment composition of claim 1 , wherein the liquid medium is water.

4. The antimicrobial treatment composition of claim 1 , comprising a chromium-substituted copper ferrite having the formula CuCr 0.4 Fe 1.6 O 4 .

5. The antimicrobial treatment composition of claim 1 , comprising a chromium-substituted copper ferrite having the formula CuCr 0.6 Fe 1.4 O 4 .

6. The antimicrobial treatment composition of claim 1 , comprising a chromium-substituted copper ferrite having the formula CuCr 0.8 Fe 1.2 O 4 .

7. The antimicrobial treatment composition of claim 1 , wherein the spinel ferrite nanoparticles have a crystallite size of from 43.3 to 20.2 nm.

8. The antimicrobial treatment composition of claim 1 , wherein the spinel ferrite nanoparticles have spherical morphology and an average particle size of from 73.5 to 47.6 nm.

9. The antimicrobial treatment composition of claim 1 , wherein the spinel ferrite nanoparticles have an average particle size in a range of 20-90 nm.

10. The antimicrobial treatment composition of claim 1 , wherein the spinel ferrite nanoparticles are porous.

11. The antimicrobial treatment composition of claim 1 , wherein the spinel ferrite nanoparticles have a BET surface area in a range of 8-30 m 2 /g.

12. The antimicrobial treatment composition of claim 1 , wherein the spinel ferrite nanoparticles have an optical band gap energy value of 1.0-2.0 eV.

Assignees

• Univ Imam Abdulrahman Bin Faisal

Inventors

• Ansari Mohammad Azam
• Baykal Abdulhadi

Classifications

• C01P2002/32

  spinel-type (AB2O4) · CPC title

• B82Y40/00

  Manufacture or treatment of nanostructures · CPC title

• C01P2002/82

  by IR- or Raman-data · CPC title

• C01P2002/72

  by d-values or two theta-values, e.g. as X-ray diagram · CPC title

• B82Y30/00

  Nanotechnology for materials or surface science, e.g. nanocomposites · CPC title