Titanium Compound Particle Surface Layer for Visible Light Photolysis
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Solution Overview
Problem
Existing structures with titanium compound particles lack effective photolysis function and adsorption properties under visible light, particularly due to low BET specific surface area and poor water repellency, limiting their applications in deodorizing and antifouling properties.
Innovation Solution
A structure comprising a base material with a surface layer containing a binder resin and titanium compound particles or aerogel particles with a BET specific surface area between 100 m2/g to 1200 m2/g, exhibiting absorption at 450 nm and 750 nm, and a water contact angle of 90 degrees to 180 degrees, enhancing photolysis function and water repellency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If titanium compound particles with low BET specific surface area are used, then the structure is easier to manufacture, but the adsorption property deteriorates
Solution Approach 1:
The patent changes the BET specific surface area parameter of titanium compound particles from conventional low values to a specific range of 100-1200 m2/g. This parameter change simultaneously improves adsorption property while maintaining manufacturability, as the particles can still be produced by conventional methods but with controlled surface area through particle size and porosity optimization.
Solution Approach 2:
The patent creates a composite structure by combining binder resin with titanium compound particles having optimized BET specific surface area. This composite approach in the surface layer enhances the overall adsorption property while allowing the binder resin to provide structural integrity and ease of application during manufacturing.
2Ease of manufacture
If titanium compound particles with low BET specific surface area are used, then the manufacturing cost is reduced, but the photolysis function under visible light deteriorates
Solution Approach 1:
The patent optimizes the BET specific surface area parameter to 100-1200 m2/g, which enhances visible light absorption capacity and photolysis function. The increased surface area provides more active sites for photocatalytic reactions under visible light, while the particles remain economically viable through controlled synthesis methods.
Solution Approach 2:
The patent applies local quality enhancement by concentrating titanium compound particles with high BET specific surface area specifically in the surface layer where visible light interaction and photolysis reactions occur. This localized optimization maximizes photolysis function where needed while allowing other parts of the structure to maintain cost-effective construction.
3Ease of operation
If the water contact angle is smaller than 90 degrees, then the surface is more hydrophilic and easier to clean, but the water repellency and antifouling property deteriorates
Solution Approach 1:
The patent changes the water contact angle parameter to 90 degrees or more, creating a hydrophobic surface that provides excellent water repellency and antifouling properties. This parameter change prevents water and contaminant adhesion, and the hydrophobic surface can still be cleaned by simple water rinsing due to the non-stick properties.
Solution Approach 2:
The patent creates a composite surface layer combining binder resin with titanium compound particles that achieve both the desired water contact angle and photocatalytic activity. This composite structure provides synergistic effects where the hydrophobic surface prevents fouling while the titanium compound particles maintain self-cleaning photolysis function.
4Reliability
If the BET specific surface area is increased to 100-1200 m2/g, then the adsorption property and photolysis function are improved, but the particle dispersibility in the binder resin may deteriorate
Solution Approach 1:
The patent optimizes the BET specific surface area to 100-1200 m2/g while controlling particle size distribution and surface characteristics to maintain good dispersibility. The balanced surface area provides sufficient adsorption capacity without excessive particle aggregation, ensuring stable composition in the binder resin matrix.
Solution Approach 2:
The patent applies local quality control by optimizing particle surface properties specifically for dispersibility while maintaining high BET specific surface area. The particles are engineered with appropriate surface chemistry and size distribution to prevent aggregation in the binder resin while preserving high adsorption capacity and photolysis function.
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 structure demonstrates improved photolysis function, deodorizing properties, and antifouling effects by optimizing particle dispersibility and photocatalytic activity, while maintaining a high degree of water repellency.
Implementation Method 1
a titanium compound particle having absorption at 450 nm and 750 nm in a visible absorption spectrum
Implementation Method 2
a particle having a BET specific surface area is within a range of 100 m2/g to 1200 m2/g... having excellent adsorption property
Implementation Method 3
a water contact angle on a surface of the surface layer is 90 degrees to 180 degrees... having a high degree of water repellency
Implementation Method 4
the structure having a photolysis function by visible light... improving photolysis function, deodorizing properties, and antifouling effects
Data Source
AI summary
A structure includes a base material; a surface layer that contains a binder resin and a titanium compound particle having absorption at 450 nm and 750 nm in a visible absorption spectrum and a BET specific surface area within a range of 100 m2/g to 1200 m2/g.