Vacancy-Engineered ZnO Nanocomposite for Resistant Pathogen Control
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Solution Overview
Problem
Current antibacterial and antifungal formulations are ineffective against resistant pathogens in plants, leading to significant crop losses worldwide, as they fail to address the emerging resistance of bacteria and fungi to antimicrobial agents.
Innovation Solution
Development of a vacancy-engineered (VE)-ZnO nanocomposite comprising interconnected VE-ZnO nanoparticles with oxygen vacancies and controlled particle sizes, which are either uncoated or coated with specific functional groups, providing antimicrobial properties without phytotoxicity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional antibacterial and antifungal formulations are used, then broad-spectrum antimicrobial protection is provided, but effectiveness is lost against resistant pathogens
Solution Approach 1:
The patent changes the physical and chemical parameters of zinc oxide by creating oxygen vacancies through controlled synthesis conditions (pH, temperature, reactant ratios). This modifies the electronic structure and surface properties of ZnO, enhancing its antimicrobial effectiveness against resistant pathogens while maintaining its broad-spectrum activity.
Solution Approach 2:
The invention creates a composite nanomaterial system where zinc oxide nanoparticles are integrated with other materials or functional groups to form a vacancy-engineered nanocomposite. This composite structure combines the inherent properties of ZnO with enhanced characteristics from the vacancy engineering, providing superior antimicrobial activity against both susceptible and resistant pathogens.
2Reliability
If zinc oxide nanoparticle size is reduced to enhance antimicrobial activity, then effectiveness against microorganisms improves, but phytotoxicity risk increases
Solution Approach 1:
The patent applies local quality modification by creating oxygen vacancies at specific locations within the ZnO nanoparticle structure. This concentrates the antimicrobial activity at the particle surface and defects rather than requiring uniform small size throughout, allowing smaller particles to be effective without uniformly increasing phytotoxicity risk across the entire material.
Solution Approach 2:
The invention changes the chemical composition and electronic structure parameters of ZnO by introducing oxygen vacancies. This allows the use of smaller particle sizes with enhanced antimicrobial effectiveness while the modified chemical properties reduce or control the phytotoxicity that would otherwise accompany size reduction.
3Stability of the object's composition
If surface capping agents with Zn ion chelating functional groups are used to stabilize nanoparticles, then colloidal stability improves, but antimicrobial activity is reduced
Solution Approach 1:
The patent extracts or removes the surface capping agents with Zn ion chelating functional groups from the nanoparticle surface. This eliminates the interference of these agents with antimicrobial activity while the vacancy-engineered ZnO nanoparticles maintain their own stability through surface defects and engineered properties rather than relying on chelating capping agents.
Solution Approach 2:
The invention enables the ZnO nanoparticles to self-stabilize through their engineered oxygen vacancies and surface properties rather than requiring external capping agents. The vacancy-engineered surface provides inherent colloidal stability while maintaining full antimicrobial activity, as the nanoparticles serve their own stabilization function without needing Zn ion chelating functional groups that would interfere with their biocidal action.
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 VE-ZnO nanocomposite effectively kills or inhibits the growth of microorganisms on plant surfaces and within plants, offering broad-spectrum antibacterial and antifungal protection while maintaining non-phytotoxicity and rainfastness, thus addressing the limitations of existing formulations.
Implementation Method 1
the plurality of VE-ZnO nanoparticles has a plurality of surface defects associated with an oxygen vacancy
Data Source
AI summary
Embodiments of the present disclosure, in one aspect, relate to compositions including a vacancy-engineered (VE)-ZnO nanocomposite, methods of making a composition, methods of using a composition, and the like.