Porous Hydrogen Peroxide Particles for Low-Temperature Sterilization

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Solution Overview

Problem

Existing sterilization methods using hydrogen peroxide face challenges in achieving effective sterilization while maintaining simplicity and cost-effectiveness, as complex vaporization systems are required for hydrogen peroxide vaporization, and nebulization devices are less effective.

Innovation Solution

A sterilization particle comprising a porous carrier material with adsorbed or contained hydrogen peroxide, which allows easy release into the gas phase at low temperatures, enabling compact and efficient sterilization devices.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If hydrogen peroxide vaporization is used for sterilization, then sterilization effectiveness is improved, but device complexity increases

Engineering Contradiction:

Improvesterilization effectivenessVSAvoidvaporization system complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent uses porous carrier materials (such as porous glass, ceramic, or metal oxides) to adsorb and store hydrogen peroxide. The porous structure provides high surface area for adsorption while allowing controlled release through the pores, eliminating the need for complex heating and vaporization systems while maintaining sterilization effectiveness

Inventive Principle:

Principle #31Porous materials

Solution Approach 2:

The patent changes the physical state and release mechanism of hydrogen peroxide from vapor-phase (requiring heating) to adsorbed-phase on porous materials. This parameter change allows room-temperature storage and controlled release through diffusion or mild heating, dramatically simplifying the device while preserving sterilization capability

Inventive Principle:

Principle #35Parameter changes

2Reliability

If hydrogen peroxide content in sterilization material is increased, then sterilization effectiveness is improved, but security and economic drawbacks increase

Engineering Contradiction:

Improvesterilization effectivenessVSAvoidsecurity and economic drawbacks

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent introduces porous carrier materials as intermediaries between the hydrogen peroxide and the environment. These materials adsorb the hydrogen peroxide, allowing high concentrations to be stored safely without direct contact with pure hydrogen peroxide, thus reducing security risks while maintaining sterilization effectiveness

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The porous carrier materials provide a safe matrix for containing high concentrations of hydrogen peroxide. The porous structure allows controlled release rates, preventing dangerous accumulation while ensuring sufficient sterilization dosage, thereby reducing both security and economic drawbacks

Inventive Principle:

Principle #31Porous materials

3Device complexity

If nebulization is used for hydrogen peroxide sterilization, then device simplicity is improved, but sterilization effectiveness decreases

Engineering Contradiction:

Improvedevice simplicityVSAvoidsterilization effectiveness

Core Design Contradiction:

Device complexityVSReliability

Solution Approach 1:

The patent uses porous carrier materials that can be integrated into simple nebulization devices. The porous structure enhances the surface area for hydrogen peroxide delivery and allows the liquid to be efficiently atomized, combining device simplicity with improved sterilization effectiveness compared to conventional nebulization

Inventive Principle:

Principle #31Porous 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 sterilization particle achieves high hydrogen peroxide content with easy release, facilitating effective sterilization in compact devices and reducing the need for complex vaporization systems.

Implementation Method 1

a sterilization material contained in pores of the porous carrier material or adsorbed on a surface of the porous carrier material

Methodology Applied

Scientific EffectAdsorption: Adsorption

Implementation Method 2

an adsorption-desorption process occurs to later release desorbed sterilant

Methodology Applied

Scientific EffectDesorption: Desorption

Implementation Method 3

allows easy release into the gas phase at low temperatures

Methodology Applied

Scientific EffectEvaporation: Evaporation

Data Source

PatentUS12478699B2Sterilization particle containing a sterilization material

Publication Date: 2025.11.25 DELOX INVESTIGACAO PROCESSOS E EQUIP CIENTIFICOS LDA

AI summary

A sterilization particle includes a porous carrier material having at least one of the following: a microporous material, a mesoporous material, a macroporous material, or a combination thereof; and a sterilization material contained in pores of the porous carrier material or adsorbed on a surface of the porous carrier material. The sterilization material includes at least 4 weight percent of the sterilization particle. A sterilization device, a method for preparing a sterilization particle, and a method for sterilizing a space are also disclosed.