Coffee Husk Extract Reducing Agent for Nanoparticle Synthesis
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Solution Overview
Problem
Current methods for synthesizing silver nanoparticles involve toxic and hazardous chemicals, are costly, and require additional purification steps, while also utilizing valuable plant materials, rather than waste materials, which are environmentally friendly and cost-effective.
Innovation Solution
A method using coffee seed husk extract as a reducing agent to synthesize noble metal nanoparticles and nanocomposites, such as silver and titanium oxide, which are environmentally friendly and do not require stabilizers, by mixing the extract with noble metal and transition metal oxide precursors, followed by calcination to produce highly porous nanomaterials suitable for various applications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If conventional chemical methods are used to synthesize silver nanoparticles, then nanoparticle production is achieved, but toxic and hazardous chemicals are required and additional purification steps are needed
Solution Approach 1:
The patent converts waste coffee seed husks, which are typically discarded as agricultural waste, into a valuable green reducing agent for nanoparticle synthesis. This transforms an environmental burden into a beneficial resource that eliminates the need for toxic chemicals while maintaining effective nanoparticle production
Solution Approach 2:
The coffee seed husk extract inherently contains reducing agents that automatically reduce metal salts to nanoparticles without requiring additional stabilizers or purification steps. The system serves itself by using the extract's natural composition to complete the synthesis process in a single step
2Ease of manufacture
If valuable plant materials are used as reducing agents, then nanoparticle synthesis is achieved, but cost increases and environmental friendliness decreases
Solution Approach 1:
The patent recovers value from discarded coffee seed husks by extracting reducing agents that can synthesize nanoparticles. Instead of discarding the husks after coffee bean processing, the extract is utilized for nanoparticle production, creating a cost-effective and environmentally friendly process
3Stability of the object's composition
If stabilizers are added to prevent nanoparticle agglomeration, then nanoparticle stability is improved, but process complexity and cost increase
Solution Approach 1:
The coffee seed husk extract contains natural reducing agents and stabilizing compounds that work together to produce stable nanoparticles without requiring additional stabilizers. The extract self-regulates the synthesis process, preventing agglomeration through its inherent chemical composition
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 method produces highly crystalline, porous nanomaterials with efficient antifungal activity, reducing the need for toxic chemicals and valuable plant materials, and is scalable for bulk production, demonstrating effective biocidal properties against fungal pathogens.
Implementation Method 1
A method using coffee seed husk extract as a reducing agent to synthesize noble metal nanoparticles
Implementation Method 2
heating the mixture at a temperature in the range of 70-100° C. for a time in the range of 10-60 min
Implementation Method 3
followed by calcination to produce highly porous nanomaterials
Data Source
AI summary
An efficient green method for the synthesis of noble metal/transition metal oxide nanocomposite comprising reducing noble metal salt and a templating metal oxide is disclosed. The method is a one-step method comprises mixing coffee seed husk extract, a noble metal precursor, and a transition metal precursor; and filtering and drying the nanocomposite. The nanocomposite prepared by the method of the invention displays all the characteristics and biocidal activity of a composite prepared by traditional methods.