Smart-Active Ceramic Air Filter

Metair Smart Active Ceramic Filter represents a paradigm shift in air purification technology, moving beyond the traditional "passive trapping" model to an era of active decomposition. At its core lies the cutting-edge Single-Atom Tungsten Oxide (STAO) technology. Unlike traditional coatings that rely on nanoparticle clusters, Metair utilizes STAO photocatalysts anchored within a rigid ceramic matrix. This atomic-level engineering maximizes catalytic efficiency, enabling the filter to actively neutralize pathogens and decompose pollutants with superior precision.

What truly sets Metair apart is its revolutionary Photochromic Enhancement Effect. This smart material doesn't just clean the air; it communicates with you. Under specific light exposure, the filter undergoes a dynamic, visible color change, signaling the activation of its super-purification mode. By transforming invisible purification power into a tangible visual experience, Metair offers a high-tech solution that combines ultra-high-efficiency filtration with intelligent, responsive design.

Mechanism of Action: Atomic-Level Precision

By isolating individual tungsten atoms on the oxide support, we achieve nearly 100% atom utilization efficiency. This creates a highly active catalytic surface that outperforms conventional bulk or nanoparticle tungsten oxide:

1. Enhanced Photochromic Response: The single-atom structure provides distinct electronic states that respond rapidly to photon absorption. Upon exposure to ultraviolet (UV) or sunlight, the material undergoes a highly efficient, reversible reduction. The mesh transitions from pale yellow/transparent to deep blue, providing a vivid visual indicator of light exposure.
2. Maximized Photocatalytic Activity: Every tungsten atom acts as an active catalytic center. Under light irradiation, these centers generate a significantly higher concentration of hydroxyl radicals and superoxide anions compared to traditional materials, leading to faster and more complete decomposition of pollutants.

Core Features & Benefits:

1. Photochromism: Visualized Energy Enhancement

• Color Change = Activation: Based on the unique physical properties of Tungsten Oxide, the Metair filter undergoes a reversible color change (e.g., from a light tone to deep blue) when exposed to light (UV or specific visible wavelengths).
• Intuitive Operational Signal: This color shift is the macroscopic manifestation of electron transitions within the material. When you see the filter change color, it means the surface active sites have been "charged" by light energy and are at the peak of their photocatalytic activity. Users no longer need to guess if the machine is effective; the color serves as an intuitive signal light indicating "High-Power Sterilization/Decomposition in Progress."
• Energy Storage & Sustained Purification: The photochromic state is often accompanied by energy storage (similar to light charging). Even if the light source temporarily dims, the material in its excited (colored) state can utilize the stored energy to maintain high-efficiency decomposition for a period of time.

2. Deep Photocatalytic Decomposition

• Complete Elimination: Our Single-Atom Tungsten Oxide catalyst harnesses light energy to thoroughly decompose Formaldehyde, Benzene, and VOCs (Volatile Organic Compounds) into harmless Carbon Dioxide and Water.
• Pathogen Neutralization: In the high-energy photochromic state, Reactive Oxygen Species (ROS) generated on the material surface can more rapidly destroy bacterial cell walls and viral structures, preventing secondary pollution.

• Sterilization: Kills >99.99% of Escherichia coli, Staphylococcus aureus, and resistant bacterial strains.
• Antifungal: actively inhibits mold and mildew colonization.
• Deep Deodorization: Neutralizes odors at the molecular level, effectively removing smells from smoke, pets, and waste.

3. Sustainable & Washable (Zero Waste)

• Built to Last: Constructed on a robust porous ceramic substrate, the filter is water-resistant, acid-resistant, and non-degrading.
• Simple Maintenance: When the filter becomes physically dirty (dust accumulation), simply wash it with water to rinse away the dust. Once dried and re-exposed to light, it will change color again and return to peak purification performance.

4. High Airflow, Low Noise

• Optimized Aerodynamics: The engineered porous structure ensures extremely low wind resistance, allowing purifiers and HVAC systems to operate more quietly and energy-efficiently.

Target Applications:

🏠 For Home: The "Set and Forget" Guardian

• Scenario: When sunlight or the purifier's internal UV light hits the filter, the user can physically see the filter's color deepen.
• Metair Advantage: This visual feedback provides immense psychological reassurance to families—"It changed color, which means it is working at full power to protect my family." It solves the anxiety of traditional purifiers where "it's on, but I don't know if it's actually doing anything."

🏢 For Office: The Healthy Workforce Solution

• Problem Solved: "Sick Building Syndrome," central AC dust accumulation, and cross-infection during flu season.
• The Metair Advantage: Easily integrates into central HVAC and fresh air systems due to low pressure drop. Reduces facility management costs by eliminating the need for frequent filter procurement and disposal.

🏥 For Hospitals: The Sterile Shield

• Problem Solved: High risk of bacterial colonization on traditional filters and mold growth in humid conditions.
• Metair Advantage: Delivers true sterilization (killing microbes rather than just trapping them). The ceramic material is immune to mold and withstands rigorous disinfection protocols (UV light, chemical sprays), ensuring a sterile environment. Medical personnel also can confirm via color whether the equipment is in "Photo-Activated Enhanced Mode." The deep-colored state represents maximum sterilization and decomposition capability, providing an instrument-free, immediate confirmation metric for infection control protocols.

Why Single-Atom Technology is Better for Air Purification:

• Zero Secondary Pollution: Unlike activated carbon which saturates and can release pollutants back into the air, the Single-Tungsten-Atom catalyst permanently mineralizes pollutants into H2O and CO2.
• Low Resistance, High Efficiency: The porous ceramic mesh allows for high airflow (low pressure drop) while the hyper-active single atoms ensure pollutants are caught and reacted immediately upon contact.
• Long Lifespan: The catalyst does not degrade during the reaction, offering years of continuous purification without the need for frequent replacement.