Method for preventing and reducing microorganism growth using a spinel ferrite composition
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.
Claims13
A method for preventing or reducing growth of a microorganism on a surface, the method comprising:
- applying spinel ferrite nanoparticles onto the surface;
- wherein the spinet ferrite nanoparticles comprise a chromium-substituted copper ferrite of formula (I)
- CuCrxFe2-xO4 (I),
- X being 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.
A method for re acing growth of a microorganism on a surface, the method comprising:
- applying onto the surface a suspension comprising a solvent and spinet ferrite nanoparticles in a range of from 50 to 100 mg/mL, relative to total suspension volume;
- contacting the spinel ferrite nanoparticles with the surface for a time in a range of from 0.1 to 24 hours, thereby reducing a count of the microorganism on the surface by at least 20%,
- wherein the spinel ferrite nanoparticles comprise a chromium-substituted copper ferrite of formula (I)
- CuCrxFe2-xO4 (I),
- X being in a range of from 0.4 to 1,
- wherein the microorganism comprises a gram-negative bacterium, 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.
Dependencies are inferred from the claim text.