Titanium Dioxide 5nm (Non-Coated) is an ultra-fine nanoscale titanium dioxide (TiO₂) powder with exceptional photocatalytic and optical properties. This advanced nanomaterial features an average particle size of 5 nanometers, providing an extremely high surface area-to-volume ratio that dramatically enhances its reactivity and performance in various industrial applications.

The non-coated nature of this material preserves its pristine surface chemistry, making it ideal for applications requiring maximum photocatalytic activity and surface reactivity. The 5nm particle size places this material in the quantum size regime, where unique quantum confinement effects emerge, leading to enhanced UV absorption, increased band gap energy, and superior catalytic performance compared to bulk TiO₂.

This ultra-fine titanium dioxide exhibits remarkable properties including high transparency in visible light while maintaining strong UV absorption, making it particularly valuable in advanced coating formulations, self-cleaning surfaces, and photocatalytic environmental remediation systems. The nanoscale dimensions enable excellent dispersion in various media and provide enhanced antimicrobial activity through photocatalytic generation of reactive oxygen species.

Industrial Applications: Photocatalytic air and water purification systems, self-cleaning coatings for buildings and glass, antimicrobial surface treatments, UV-blocking transparent films, advanced ceramic materials, environmental remediation catalysts, solar cell efficiency enhancers, and nano-composite reinforcement materials.

Photocatalytic Properties: Under UV irradiation, generates hydroxyl radicals and superoxide anions for degradation of organic pollutants, VOCs, and microbial contaminants. Exhibits enhanced quantum efficiency due to reduced electron-hole recombination at nanoscale dimensions.

Technical Specifications:
- Primary particle size: 5nm (±2nm)
- Crystal structure: Anatase phase (>95%)
- Specific surface area: >300 m²/g
- Purity: >99.5%
- Color: White powder with slight blue tinge
- Band gap energy: ~3.4 eV (enhanced from bulk)
- UV absorption: Maximum at 300-320nm

Handling and Dispersion: Use appropriate PPE including N95 respirator when handling dry powder. For optimal dispersion, pre-wet with suitable dispersant or use ultrasonic treatment. Recommended dispersants include polyacrylic acid, sodium polymethacrylate, or specialized nano-dispersants. Avoid strong acids which may cause agglomeration.

Safety Considerations: Nanomaterial - requires special handling precautions. Use in well-ventilated areas or fume hoods. Avoid inhalation and skin contact. May cause respiratory irritation if inhaled. Store in sealed containers away from incompatible materials. Follow nano-specific safety protocols for disposal.

Storage: Store in tightly sealed containers in a cool, dry place away from moisture and direct sunlight. Material may agglomerate over time; gentle grinding or ultrasonic treatment can restore dispersibility. Shelf life: 24 months when properly stored.

Chemical Name: Titanium(IV) oxide, Titanium dioxide
CAS Number: 13463-67-7
Molecular Formula: TiO₂
Molecular Weight: 79.87 g/mol