Trimetal antimicrobial composition for multidrug resistant bacteria
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Solution Overview
Problem
There is a lack of effective methods for preventing or reducing microbial growth on surfaces using transition metal substituted spinel ferrite nanoparticles, despite their potential antimicrobial properties.
Innovation Solution
The method involves synthesizing spinel ferrite nanoparticles comprising a chromium-substituted copper ferrite of formula CuCrxFe2-xO4, where x is greater than 0 and smaller than 2, by mixing copper(II) salt, chromium(III) salt, iron(III) salt, an inorganic base, and water, and then heating and drying the mixture to produce the nanoparticles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If transition metal substituted spinel ferrite nanoparticles are used for antimicrobial applications, then antimicrobial activity is improved, but there is a lack of effective methods for preventing microbial growth on surfaces
Solution Approach 1:
The patent applies parameter changes by systematically varying the substitution level of transition metals (Mn, Fe, Co, Ni, Zn) in the spinel ferrite structure Cu1-xMxFe2O4. By changing the compositional parameter x and the type of substituting metal, the antimicrobial activity is optimized while maintaining a feasible synthesis approach through co-precipitation method.
Solution Approach 2:
The patent creates composite materials by substituting copper ferrite with various transition metals to form spinel ferrite nanoparticles with enhanced antimicrobial properties. The composite structure Cu1-xMxFe2O4 combines the benefits of copper ferrite with the specific properties of substituting metals, providing both improved antimicrobial activity and practical manufacturability through established co-precipitation techniques.
2Reliability
If chromium-substituted copper ferrite nanoparticles are synthesized, then antibacterial efficacy is improved, but the synthesis process complexity increases
Solution Approach 1:
The patent applies preliminary action by pre-mixing the metal salts (copper, chromium, and iron) in the correct stoichiometric ratios before initiating the co-precipitation process. This preliminary preparation ensures that the nanoparticles form with the desired composition Cu1-xCrxFe2O4 directly during synthesis, avoiding complex post-synthesis adjustments and simplifying the overall process while maintaining high antibacterial efficacy.
Solution Approach 2:
The patent optimizes synthesis parameters including pH control, temperature, and substitution level x to achieve maximum antibacterial efficacy. By carefully controlling these parameters during co-precipitation, the process remains relatively simple while producing nanoparticles with enhanced antimicrobial properties compared to unsubstituted copper ferrite.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The chromium-substituted copper ferrite nanoparticles effectively prevent or reduce microbial growth on surfaces, demonstrating strong antibacterial activity against gram-negative bacteria such as Escherichia coli, with improved efficacy compared to unsubstituted copper ferrite nanoparticles.
Implementation Method 1
The chromium-substituted copper ferrite nanoparticles effectively prevent or reduce microbial growth on surfaces, demonstrating strong antibacterial activity against gram-negative bacteria such as Escherichia coli
Implementation Method 2
heating and drying the mixture to produce the nanoparticles
Implementation Method 3
heating and drying the mixture to produce the nanoparticles
Data Source
AI summary
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.