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Views: 0 Author: Site Editor Publish Time: 2025-04-08 Origin: Site
As air pollution problems become increasingly serious, people's attention to a healthy breathing environment continues to rise. Traditional air purification materials have gradually exposed their limitations in terms of sustainability, filtration efficiency and environmental performance. which originates from natural plant resources , is launching a green revolution in the field of air purification materials with its unique structure Nanocellulose , and excellent performance.
Nanocellulose is a nano-scale fiber material extracted from plant fibers (such as wood pulp, cotton, bamboo, etc.) or microorganisms, with the following core characteristics:
High specific surface area and porous structure are conducive to the adsorption of particulate matter and harmful gases;
Good mechanical properties and film forming properties , suitable for the preparation of a variety of filter materials;
Renewable and degradable are ideal choices for achieving green and low-carbon development.
In order to apply nanocellulose to efficient air purification, the preparation process requires both material performance and environmental protection requirements. The current mainstream preparation methods include:
The cellulose is selectively oxidized by TEMPO catalytic system to generate negatively charged carboxyl groups on the surface, significantly improving dispersion and adsorption properties.
Advantages: Small particle size, strong surfactivity, suitable for composite with functional materials.
Application: Making high-efficiency particulate filtration membranes and VOCs adsorption carriers.
The fiber bundle is interrupted by high-energy physical treatment to obtain nanocellulose with controllable length and diameter.
Advantages: Can be produced on a large scale and has strong stability.
Application: air filter element, composite purification coating substrate.
To further improve the air purification effect, nanocellulose is often combined with the following materials:
Functional components | Enhanced features |
TiO₂/ZnO | Photocatalytic decomposition of formaldehyde and benzene substances |
Activated Carbon /Graphene | Enhance gas adsorption capacity |
Metal ions ( Ag⁺, Cu²⁺) | Provide antibacterial and antibacterial properties |
The air filter membrane made of nanocellulose has a dense pore structure, which can effectively intercept PM2.5 and more fine particles, and also has excellent breathability. It is widely used in air purifiers and central air conditioning systems.
Nanocellulose of composite antibacterial materials can be used to produce high-efficiency filter masks and medical protective filter materials, playing a key role in the field of public health and safety.
By combining with photocatalysts or active adsorbents, nanocellulose can be prepared into environmentally friendly aldehyde removal coatings, odor removal wallpapers and furniture finishing materials to achieve long-term indoor purification.
Adding nanocellulose composite materials to the vehicle air conditioning filter can effectively absorb exhaust particles and odor molecules, improving the comfort of the driving environment.
project | Traditional materials | Nanocellulose materials |
PM2.5 filtration efficiency | 85–90% | ≥99% |
Breathability | generally | good |
Degradability and environmental protection | Non-degradable | Naturally degradable |
Functional Compounding Ability | limited | 高 |
Source of materials | Petrochemical products | Naturally renewable |
