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Views: 0 Author: Site Editor Publish Time: 2026-07-05 Origin: Site
Air purifier filters are not all made from the same materials. Their structure and media depend on the type of pollutant they are designed to remove. For modern indoor air purification, many filters are no longer limited to trapping visible dust. They are also used to reduce gas-phase pollutants such as formaldehyde, VOCs, ozone, and odors.
BESIN air purifier filters are designed for air purifiers, fresh air systems, ventilation equipment, air conditioners, and customized air purification solutions. Depending on the application, the filter may use activated carbon, photocatalytic coatings, or catalytic materials, which can be supported by honeycomb carriers, foam carriers, metal mesh carriers, or composite structures to achieve adsorption, catalytic decomposition, or chemical conversion.
Air purifier filters for gas-phase pollution are commonly made with activated carbon, photocatalytic materials, and specialized catalysts.
Activated carbon filters are used for adsorbing odors,TVOCs, and other harmful gases.
Photocatalytic filters are usually coated with nano-grade titanium dioxide and work with light to decompose pollutants such as VOCs and formaldehyde.
Formaldehyde removal filters often combine adsorption media with catalytic materials to support faster and more stable pollutant reduction.
Ozone removal filters use catalytic materials to convert ozone into oxygen.
Honeycomb, foamed ceramic or metal, metal mesh and aluminum frame structure help balance airflow, increase contact area, reduce pressure loss and provide installation flexibility.
Activated carbon filters are among the most effective solutions for gas-phase air purification.Unlike mechanical filter media that mainly block particles, activated carbon works through adsorption. Its porous structure provides a large internal surface area, allowing it to capture odor molecules,TVOCs, and other airborne chemical pollutants.
In air purifier applications, activated carbon can be loaded onto carriers such as sponge, PP honeycomb, or other porous structures. This design increases contact between polluted air and the adsorption media while helping maintain stable airflow through the equipment.
Activated carbon filters are especially suitable for spaces affected by renovation materials, furniture emissions, cooking odors, smoke odor, or general indoor VOC accumulation. They are commonly used in household air purifiers, ceiling-mounted air purification systems, ventilation systems, and commercial indoor air treatment equipment.
Photocatalytic filters are typically made by coating a carrier material with nano-grade titanium dioxide.When activated by ultraviolet light irradiation with wavelengths below 388nm, the photocatalytic surface helps decompose pollutants such as formaldehyde, benzene, VOCs, and odor molecules.
The carrier can be aluminum honeycomb or other appropriate high - surface - area structures. A larger contact surface helps improve purification efficiency because more polluted air can interact with the active coating.
Photocatalytic air filters are suitable for indoor air purification systems that require long - term decomposition of organic pollutants and bactericidal effects.They can be used in household air purifiers, bedrooms, living rooms, offices, public buildings, and customized purification equipment.
Formaldehyde removal filters are designed for environments where building materials, furniture, flooring, adhesives, and decoration residues may continuously release formaldehyde. Instead of relying only on temporary adsorption, these filters can use catalytic materials to support decomposition.
A typical formaldehyde removal filter may use a composite structure with activated carbon, active manganese, precious metal catalyst materials, or other catalytic media. The filter carrier may include aluminum honeycomb, nickel foam, sponge, metal mesh, or foamed ceramic, depending on equipment size, airflow requirements, and installation conditions.
This type of filter is commonly used in indoor air purifiers, residential spaces, commercial areas, public buildings, and other places where long-term formaldehyde and VOC control is required.
VOCs, or volatile organic compounds, are common indoor gas pollutants released by paints, adhesives, plastics, furniture, office equipment, and cleaning products. VOC removal filters are generally made with a combination of adsorption media and catalytic materials.
The structure may include aluminum honeycomb, sponge, nickel foam, foam ceramic, metal mesh, or other customizable carriers. These materials provide support for active media while allowing the filter to fit different air purifier models and system designs.
A VOC removal filter can reduce harmful organic gases through adsorption and catalytic decomposition. This makes it suitable for residential rooms, offices, hotels, schools, hospitals, and other indoor environments with high air quality requirements.
Ozone removal filters are designed to reduce ozone in indoor or equipment-related air purification scenarios. Their main function is to convert ozone into oxygen through catalytic reaction.
These filters usually use catalytic materials rather than simple physical filtration media. The catalyst is applied to a suitable carrier so that ozone-containing air can pass through and react efficiently. Ozone removal filters are useful in air purification equipment, commercial buildings, offices, laboratories, and systems where ozone control is required.
The carrier structure is an important part of an air purifier filter. It affects airflow, pressure loss, contact area, installation stability, and service life.
Common carrier materials can be classified as follows:
Honeycomb Carriers (Aluminum Honeycomb and PP Honeycomb)
Foam Carriers (Foamed Metal, foamed ceramic and Nickel Foam)
Sponge
Metal Mesh Carriers (Metal Mesh and Aluminum foil mesh)
Honeycomb structures are often used because they provide a large contact surface while supporting smooth airflow. Foam and sponge structures can be useful when flexibility, lightweight installation, or custom shape requirements are important. Metal Mesh structures offer durability and dimensional stability for commercial and industrial equipment.
Air purifier filters must also be designed to fit the equipment in which they are installed. Filter Frame Options and Materials help the filter maintain its shape during operation and make replacement or integration easier.
Common frame options include stainless steel, sponge bar, aluminum profiles, and black card stock.
Stainless steel: Delivers strong corrosion resistance and structural stability, ideal for durable use in industrial or high-demand scenarios.
Sponge bar: Provides flexible sealing to reduce air leakage, while being lightweight for easy installation.
Aluminum profiles: Balances light weight and mechanical strength, ensuring shape retention for commercial air purifiers.
Black card stock: A cost-effective, lightweight choice suitable for simple-structure or temporary filter applications.
Galvanized iron: Provides high structural strength and cost-effective support for various air purifier applications.
Plastic frame: Lightweight and suitable for applications where reduced weight and corrosion resistance are required.
Frameless design: Suitable for customized installation requirements and applications with specific structural or aesthetic needs.
The right frame depends on the air purifier model, installation method, airflow direction, pressure requirements, and maintenance expectations.
For OEM and ODM projects, filter size, thickness, carrier material, frame material, and purification function can be customized according to the customer’s equipment and application scenario.
Gas-phase air purification often requires more than one material. For example, an activated carbon layer can adsorb odors and VOCs, while a photocatalytic or catalytic layer can help decompose specific pollutants. A formaldehyde removal filter may combine adsorption and catalytic decomposition to improve removal stability.
This composite design allows the filter to address different pollutant types in one system. In air purifiers and fresh air systems, filters can be designed as modular components so that ozone removal, VOC removal, formaldehyde removal, odor control, and other functions can be matched to the actual indoor air quality challenge.
The right filter material depends on the pollutant source and the equipment structure.
For household decoration odor, formaldehyde, and furniture emissions, activated carbon and formaldehyde removal filters are commonly selected. For VOCs from offices, commercial buildings, or public areas, VOC removal filters with adsorption and catalytic decomposition are suitable. For odor control and long-term air purification, photocatalytic filters can be used where the system includes a suitable light source. For ozone-related applications, ozone removal filters with catalytic materials are recommended.
When selecting an air purifier filter, buyers should consider:
Target pollutants, such as formaldehyde, VOCs, ozone, or odors
Equipment type, such as air purifier, fresh air system, ventilation unit, or air conditioner
Filter size and thickness
Airflow and pressure loss requirements
Carrier and frame material
Replacement cycle and maintenance method
Customization requirements for OEM or ODM projects
Air purifier filters are made from different materials according to the pollutants they are designed to treat. For gas - phase air purification, key components include:
Media: activated carbon, nano - grade titanium dioxide photocatalytic coating, active manganese catalysts, precious metal catalysts.
Carriers: honeycomb carriers (such as aluminum honeycomb and PP honeycomb), foam carriers (foamed metal, foamed ceramic, nickel foam), sponge, metal mesh carriers (metal mesh and aluminum foil mesh).
Frames: stainless steel, sponge bar, aluminum profiles, black card stock, galvanized iron, plastic frames, and frameless designs.
BESIN provides air purifier filters for ozone removal, VOC removal, photocatalytic purification, and activated carbon adsorption. With customizable size, structure, media, and performance design, these filters can be integrated into household air purifiers, fresh air systems, ventilation equipment, air conditioners, commercial buildings, and industrial air purification solutions.
