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US 12,649,669 B2Granted
Method for microorganism growth inhibition
AssigneeImam Abdulrahman Bin Faisal University
InventorsMohammad Azam Ansari, Abdulhadi Baykal
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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.
Claims12
A method for preventing or reducing growth of a microorganism on a surface, the method comprising:
- applying spinel ferrite nanoparticles onto the surface and contacting the microorganism with the spinel ferrite nanoparticles to electrostatically damage cell walls of the microorganism;
- wherein the spinel ferrite nanoparticles comprise a chromium-substituted copper ferrite of formula (I)
- CuCrxFe2-xO4 (I)
- wherein X is in a range of from 0.4 to 1;
- wherein the spinel ferrite nanoparticles are in contact with the surface for a time in a range of from 0.1 to 24 hours;
- and
- wherein a count of the microorganism on the surface is reduced more by the chromium-substituted copper ferrite than a copper ferrite without chromium substitution.
4 more elements
Dependencies are inferred from the claim text.