TiO2-ZnO Nanocomposites for Fast Natural Extract Encapsulation
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Solution Overview
Problem
Existing methods for synthesizing nanocomposites of titanium dioxide (TiO2) and zinc oxide (ZnO) with natural extracts are lengthy and often require toxic chemicals, limiting their application in industries like agriculture, pharmaceuticals, and cosmetics, and lack a broad-spectrum biocidal efficacy.
Innovation Solution
A novel process using ultrasound-assisted sonication for ethanolic extraction of natural extracts and sol-gel synthesis of TiO2-ZnO nanocomposites, enhancing surface area and encapsulating natural compounds within the nanomaterial's pores, resulting in a biocidal formulation effective against various microorganisms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional methods are used for synthesizing TiO2-ZnO nanocomposites with natural extracts, then the synthesis process is thorough and stable, but the synthesis time is lengthy and toxic chemicals are required
Solution Approach 1:
The patent replaces conventional chemical synthesis methods with ultrasound-assisted sonication. The ultrasonic waves create cavitation bubbles that collapse and generate localized high-energy environments, enabling rapid nanocomposite formation without lengthy chemical reactions or toxic reagents. This acoustic field substitution reduces synthesis time from hours/days to minutes while maintaining product stability.
Solution Approach 2:
The patent changes the synthesis parameters by using solvent-free conditions and ultrasound power parameters instead of conventional temperature, pressure, and chemical catalyst parameters. By controlling ultrasound frequency (20-100 kHz) and power density, the synthesis achieves both speed and reliability without toxic chemicals.
2Ease of manufacture
If conventional synthesis methods are used, then the process is simple, but the surface area of the nanocomposite is limited
Solution Approach 1:
The patent produces nanocomposites with inherent porous structures through ultrasound-induced cavitation and bubble collapse. These pores increase the specific surface area dramatically, providing more active sites for natural extract encapsulation and biocidal activity. The porous morphology is created directly during synthesis without complex post-processing.
Solution Approach 2:
The ultrasound treatment transforms the nanocomposite morphology from dense aggregates to three-dimensional porous networks. This dimensional restructuring increases surface area by creating internal pore spaces and surface roughness, effectively adding surface area in the vertical dimension rather than just expanding horizontal coverage.
3Stability of the object's composition
If existing nanocomposite methods are used, then the formulation is stable, but broad-spectrum biocidal efficacy is not achieved
Solution Approach 1:
The patent creates a composite nanomaterial system combining TiO2, ZnO, and natural extracts in a single integrated structure. The TiO2-ZnO core provides photocatalytic and antimicrobial properties, while the porous structure encapsulates natural extracts that contribute additional biocidal mechanisms. This composite approach achieves broad-spectrum efficacy against bacteria, fungi, and viruses while maintaining formulation stability through the synergistic interaction of components.
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 reduces synthesis time, increases surface area, and produces a nanosystem with high efficacy and broad-spectrum biocidal properties, suitable for agricultural, veterinary, pharmaceutical, and cosmetic applications.
Implementation Method 1
ultrasound-assisted sonication for ethanolic extraction of natural extracts
Implementation Method 2
sol-gel synthesis of TiO2-ZnO nanocomposites
Implementation Method 3
sol-gel synthesis of TiO2-ZnO nanocomposites
Implementation Method 4
encapsulating natural compounds within the nanomaterial's pores
Data Source
AI summary
The instant invention refers to nanosystems comprising nanocomposites for adsorption or support of natural extracts; a process for the preparation thereof; formulations containing thereof, as well as a nanomaterial that adsorbs one or more essential oils in its surface. Specially, one object of the invention is the encapsulation of natural extracts, i.e., essential oils and/or natural pure bioactive compounds and optionally terpenoid, sesquiterpenoid, diterpenoid, sesterterpenoid, triterpenoid, carotenoid, and ricinoid compounds; complementary acids, and polysaccharides; vitamins, and other organic compounds, in mesoporous materials for application in different industries such as food, agricultural, veterinary, aquacultural, pharmaceutical, cosmetic, cleaning, sanitizing, and disinfection industries, as well as in medicine.