What is Titanium Dioxide?

Basic Properties

Titanium dioxide (TiO₂) is a white solid characterized by high refractive index, high dielectric constant, excellent chemical stability, and photocatalytic properties.

Crystal Structures

Titanium dioxide primarily exhibits three crystal structures: anatase, rutile, and ilmenite. Among these, anatase and rutile are relatively widely used. The rutile structure belongs to the hexagonal orthorhombic crystal system, featuring a cubic unit cell with high stability and specific gravity. The anatase structure belongs to the tetragonal crystal system, where titanium atoms occupy the centers of octahedra, exhibiting reduced stability at elevated temperatures.

Rutile titanium dioxide exhibits superior axial optical properties, high birefringence, enhanced thermal stability, and excellent weather resistance and light retention. Consequently, it is frequently used in high-end coatings, inks, plastics, and electronic components.

Anatase titanium dioxide possesses strong magnetic properties and high reactivity, making it commonly employed in photocatalysis, sterilization, and disinfection applications.

What is Titanium Dioxide by Hydrothermal Method?

Titanium dioxide by the hydrothermal method refers to producing titanium dioxide powder materials by placing a titanium source in a sealed container with high-purity water as the matrix, where the titanium undergoes hydrolysis to form crystals. Our company's product—titanium dioxide produced by the liquid-phase method—employs a low-temperature, low-pressure hydrothermal process, operating at approximately 100°C with pressure maintained at atmospheric levels.

Customized production is supported. By controlling reaction conditions such as temperature, feed rate, concentration, surfactant type, and dosage, titanium dioxide with desired specifications can be obtained. The hydrothermal method enables precise control over the crystal structure and morphology of titanium dioxide to meet the requirements of various application fields.

What are the Advantages of Titanium Dioxide by Hydrothermal Method?

As a preparation technique for nano powder materials, the hydrothermal method holds a significant position in the production and synthesis of nano titanium dioxide due to its unique advantages.

1. Environmentally Friendly

• Reduces harmful emissions: The hydrothermal method eliminates the need for organic solvents or other hazardous chemicals throughout the preparation process, thereby preventing environmental pollution.
• Promotes sustainable development: As a green synthesis method, the hydrothermal approach aligns with current sustainability requirements, contributing to environmental protection and resource recycling.

2. Flexible Adjustment of Calcination Temperature

• Maintaining Phase Stability: Research indicates that adjusting calcination temperature within a specific range prevents the transformation of the anatase phase into the rutile phase, which is crucial for preserving the photocatalytic activity of the product.
• Modulating Product Properties: By altering calcination temperature, the physical properties of titanium dioxide—such as specific surface area and pore structure—can be precisely controlled, thereby expanding its application scope.

3. Outstanding Product Performance

• Highly Uniform Nanostructure: The hydrothermal method enables precise control over material synthesis at the molecular level, yielding nano titanium dioxide with narrow particle size distribution and uniform morphology.
• Excellent Photocatalytic Performance: Titanium dioxide nanotubes synthesized by the hydrothermal method exhibit superior photocatalytic properties, demonstrating significant application value in environmental purification and solar energy conversion.

4. Enhancing Product Performance

• Improved Light Absorption: Hydrothermally synthesized titanium dioxide significantly enhances light absorption capacity, boosting photovoltaic conversion efficiency. This holds significant importance for applications such as solar cells.
• Enhanced Interface Properties: The hydrothermal process generates abundant hydroxyl groups on the titanium dioxide surface, facilitating improved interface interactions with other materials. This expands its applicability in fields including sensors and catalysts.

What are Application Areas of Titanium Dioxide by Hydrothermal Method?
Titanium Dioxide by Hydrothermal Method

1. MLCC Ceramic Capacitors

The demand for multilayer ceramic capacitors (MLCCs) has been increasing year by year due to their compact size, high capacitance per unit volume, long service life, high reliability, and suitability for surface mounting.

2. Lithium Battery Cathode Materials

Adding titanium dioxide to lithium batteries enhances battery stability, increases battery capacity, and extends battery life.

3. Photocatalysis Applications

• Air Purification: Utilizes titanium dioxide to decompose organic pollutants under light exposure, achieving air purification.
• Water Treatment: Degrades organic contaminants in water through photocatalytic action, enhancing water quality.
• Self-Cleaning Surfaces: Titanium dioxide coatings exhibit self-cleaning properties when exposed to light, applied to building exteriors, glass, and similar surfaces.

4. New Energy Industry

• Solar Cells: Titanium dioxide serves as a photoanode material, enhancing the photovoltaic conversion efficiency of solar cells.
• Hydrogen Energy: Utilizing titanium dioxide for photocatalytic water splitting to produce hydrogen, providing a new hydrogen source for the renewable energy sector.
• Energy Storage Materials: Titanium dioxide-based composite materials hold potential application value in energy storage fields such as lithium-ion batteries.

5. Functional Coatings

Develop titanium dioxide-based coatings with anti-corrosion, anti-fouling, and self-cleaning properties to meet specialized requirements.

6. Biomedical Field

Investigate the potential applications of titanium dioxide in drug delivery systems, bioimaging, and antimicrobial materials.

7. Sensor Technology

Researching the application potential of titanium dioxide-based sensors in environmental monitoring, food safety, autonomous driving, and other fields.