Titanium Oxide Composition for Odor Decomposition
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Solution Overview
Problem
Current deodorizing methods face challenges in efficiently decomposing odor-causing substances due to low adsorption capabilities, re-emission of adsorbed substances, and instability of adsorbent compositions, particularly with hydrophilic adsorbents like sepiolite and silica, and hydrophobic adsorbents like high silica zeolite, which affect their effectiveness and dispersion stability.
Innovation Solution
A titanium oxide composition combining titanium oxide particles with sepiolite or attapulgite and high silica zeolite or hydrophobic silica at specific mass ratios, optimized for enhanced decomposition and adsorption, and improved dispersion stability, forming a stable dispersion liquid for effective odor control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If hydrophilic adsorbents (sepiolite, silica) are used to adsorb odor-causing substances, then adsorption capability is improved, but water is adsorbed strongly causing re-emission of odor-causing substances
Solution Approach 1:
The patent combines hydrophilic adsorbents (sepiolite or silica) with hydrophobic adsorbents (high silica zeolite) to create a composite adsorbent system. The hydrophilic component provides strong adsorption capability for odor-causing substances, while the hydrophobic component prevents re-emission by adsorbing the substances in a water-repellent environment. This composite approach resolves the contradiction between adsorption capability and prevention of re-emission.
2Object-generated harmful factors
If hydrophobic adsorbents (high silica zeolite) are used to prevent re-emission of odor-causing substances, then re-emission is suppressed, but adsorption capability for hydrophilic gases is reduced
Solution Approach 1:
The patent creates a composite adsorbent combining hydrophobic high silica zeolite with hydrophilic sepiolite or silica. The hydrophobic zeolite component suppresses re-emission of adsorbed substances, while the hydrophilic component compensates for reduced adsorption capability by providing enhanced adsorption for hydrophilic odor-causing gases. The synergistic combination resolves the contradiction between re-emission suppression and adsorption capability.
3Object-generated harmful factors
If high silica zeolite is used as adsorbent to suppress re-emission, then re-emission is prevented, but dispersity in water is low reducing dispersion stability
Solution Approach 1:
The patent combines hydrophobic high silica zeolite with hydrophilic sepiolite or silica to create a composite adsorbent with balanced properties. The hydrophilic component enhances water dispersity and dispersion stability, while the hydrophobic zeolite component maintains re-emission prevention capability. This composite structure resolves the contradiction between re-emission prevention and dispersion stability.
4Quantity of substance
If activated carbon is used to achieve superior adsorption capability, then adsorption is improved, but light absorption is increased hindering photocatalytic decomposition
Solution Approach 1:
The patent replaces activated carbon with a composite adsorbent system consisting of high silica zeolite combined with sepiolite or silica. This composite provides sufficient adsorption capability for odor-causing substances while maintaining high light transmittance that allows photocatalytic decomposition to proceed efficiently. The composite material approach resolves the contradiction between adsorption capability and photocatalytic productivity.
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 composition exhibits high decomposition efficiency of odor-causing substances with reduced re-emission and superior dispersion stability, effectively addressing the limitations of existing methods by maintaining adsorption capacity and ensuring a strong, uniform surface layer for odor control.
Implementation Method 1
studies have been actively conducted in recent years on decomposing odor-causing substances with a photocatalyst
Implementation Method 2
The physical deodorizing method is to eliminate an odor-causing substance(s) from the air via physical adsorption
Implementation Method 3
high silica zeolite that is hydrophobic is used as an adsorbent to prevent an odor-causing substance(s) from being re-emitted
Data Source
AI summary
Provided is a titanium oxide composition that has a high capability to decompose odor-causing substances, is less likely to cause re-emission of an odor-causing substance(s) due to adsorption of water, and exhibits an excellent particle dispersion stability. The titanium oxide composition contains titanium oxide particles, a component A and a component B. The component A is at least one kind selected from a group of sepiolite and attapulgite, and the component B is at least one kind selected from a group of high silica zeolite and hydrophobic silica. A mass ratio of the component A to the titanium oxide particles is 0.75 to 3.25, and a mass ratio of the component B to the component A is 0.25 to 3.0. Also provided is a member having such titanium oxide composition on its surface.