In the post-pandemic era, public concern over indoor air health has reached unprecedented levels. Traditional air purifiers require frequent filter replacements, and UV lamps pose safety risks — neither can fully meet the demand for long-lasting, silent, and maintenance-free air purification.
Photocatalytic antibacterial coatings have emerged in this context, enabling the creation of low-germ, low-VOC healthy environments simply under everyday lighting.

1. Market Demand: A Growing Need for “24/7 Maintenance-Free” Purification

• Rising air pollution and respiratory disease risks have led to greater consumer spending on indoor environmental safety.

• Building energy-saving designs often result in poor ventilation, making conventional air exchange insufficient to eliminate volatile organic compounds (VOCs) and microorganisms.

• Antibacterial deodorizing panel lights, requiring no filter replacement and posing no high-energy UV radiation risk, meet both commercial and residential demands for seamless, long-lasting purification.

---

2. Core Mechanism: TiO₂ Photocatalysis Producing Strong Oxidizing Radicals

At the heart of this innovation is a specially formulated TiO₂ (titanium dioxide) photocatalyst coating, carefully applied to the product surface.
Upon exposure to light, the TiO₂ particles are activated, generating electron-hole pairs (e⁻ and h⁺):

• Electrons (e⁻) react with oxygen molecules (O₂) in the air to form superoxide anion radicals (·O₂⁻).

• Holes (h⁺) react with water (H₂O) or hydroxide ions (OH⁻) to produce highly reactive hydroxyl radicals (·OH).

These powerful radicals and reactive oxygen species (ROS) trigger strong oxidation reactions, decomposing harmful organic compounds such as:

• Bacteria and viruses

• Formaldehyde (HCHO)

• Total volatile organic compounds (TVOCs)

As a result, pollutants are broken down into harmless carbon dioxide (CO₂) and water (H₂O), effectively purifying the air.

Long-Term Stability:
TiO₂ particles calcined at 500°C maintain chemical and physical stability for over three years, ensuring lasting performance.

Safety:
TiO₂ has been proven safe for human environments.

---

Why Choose Photocatalytic Antibacterial Coated Products?

Unlike traditional air purifiers that require frequent filter changes or UV lamps that cannot operate safely around people, photocatalytic TiO₂-coated products purify the environment safely and continuously during normal daily use.
They not only illuminate your space but also create a low-bacteria, low-pollution ecosystem, contributing to a healthier, safer living and working environment.

---

3. Experimental Data: Proven Surface and Air Purification

• COVID-19 Inactivation:
  Nitrogen-doped TiO₂ achieved over 90% SARS-CoV-2 inactivation under visible light within 2 hours (PMC); CuₓO/TiO₂ composite coatings demonstrated inactivation even in the dark, with enhanced efficiency under light (Nature).

• Bacteria and VOC Reduction:
  In a 30 m³ laboratory test, a 600×600 mm panel light reduced airborne bacterial levels by 65–71% within 2 hours and removed 42–55% of formaldehyde within 8 hours.

• Minimal Optical Impact:
  TiO₂ coating thickness ≈ 1 μm, with light transmittance loss of less than 1%.
  At 4000 K color temperature, ROS generation efficiency is higher compared to 3000 K and 6500 K, and purification rates increase linearly with light intensity.

---

4. Why Choose Photocatalytic Antibacterial Lighting?

• Continuous and Safe:
  No filters, no maintenance; unlike UV lamps, it operates safely around people without UV hazard.

• Dual Functionality:
  Provides high-quality lighting while purifying the air, building a low-bacteria, low-VOC environment that enhances living and working conditions.

• Energy Efficient and Eco-Friendly:
  Driven by everyday lighting energy with no additional power or consumables required.

---

5. New Product Launch: IP65 Waterproof Antibacterial Panel Light and Applications

Our newly launched IP65-rated photocatalytic antibacterial panel light offers enhanced protection:

Typical Applications:
Hospital wards, laboratories, commercial kitchens, school classrooms, smart offices — providing all-day “Lighting + Purification” dual protection.