Ligand-Coated ZnX Nanoparticles for Low-Energy Hydrated Electron Generation
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Solution Overview
Problem
Existing methods for generating hydrated electrons require high-energy, large-sized, and expensive light sources, such as femtosecond pulsed lasers and vacuum UV light devices, and involve the use of rare metals like iridium, making them impractical for industrial applications.
Innovation Solution
A nanoparticle comprising a zinc compound with a specific organic ligand and optionally doped with a transition metal, which can generate hydrated electrons using a lower energy, smaller, and less expensive light source, such as visible or UV light, without rare metals like iridium.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If high-energy light sources such as femtosecond pulsed lasers are used to generate hydrated electrons, then the generation efficiency of hydrated electrons is improved, but the device size and cost increase significantly
Solution Approach 1:
The patent changes the energy parameter of the light source from high-energy (femtosecond pulsed laser) to low-energy (visible or near-UV light), and compensates by optimizing nanoparticle properties (composition, size, surface area) to maintain generation efficiency while reducing device complexity and cost
Solution Approach 2:
The patent introduces nanoparticles as an intermediary substance that absorbs low-energy light and converts it to generate hydrated electrons, acting as a mediator between the low-energy light source and the desired high-energy chemical effect
2Use of energy by moving object
If rare metal catalysts such as iridium are used to generate hydrated electrons with lower energy light, then the light energy requirement is reduced, but the cost and sustainability worsen due to rare metal dependency
Solution Approach 1:
The patent replaces expensive rare metal catalysts (iridium) with cheaper alternative materials (transition metals like Fe, Co, Ni, Cu, or non-metallic compounds), accepting that the nanoparticles may have limited stability but gaining significant cost reduction and improved sustainability
Solution Approach 2:
The patent uses composite nanoparticle structures combining transition metals with metal oxides or other materials to achieve catalytic activity comparable to rare metals while using abundant, sustainable materials
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 nanoparticle efficiently generates hydrated electrons and decomposes halogen-containing organic materials, offering a cost-effective and sustainable solution suitable for industrial use.
Implementation Method 1
irradiating the nanoparticle for generation of hydrated electrons with visible light or UV light
Implementation Method 2
decompose a halogen-containing organic material
Data Source
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AI summary
Disclosed is a nanoparticle, comprising an organic ligand represented by the following Formula (2) on the surface of a particle represented by the following Formula (1): ZnX (1) [in Formula (1), X represents a Group 16 element], -Y-R21-R22 (2) [in Formula (2), Y is selected from OCO, OSO2, OSO, and SCS-N(R23); R21 represents an organic group having 1 to 20 carbon atoms that is optionally substituted with SH or fluorine; R22 represents H, F, COOH, or NH2; and R23 represents a monovalent organic group having 1 to 20 carbon atoms that is optionally substituted with SH or fluorine, with the proviso that cases where R21 is CH2 and R22 is H or NH2 are excluded].