The plasma air sterilizer is a device that uses plasma technology to sterilize and disinfect. Plasma technology is a kind of technology that excites gas molecules to high energy level through gas discharge. When the gas molecules are excited to a high energy level, processes such as ionization and electron collisions occur, producing a large number of plasma. These plasmas can come into contact with airborne microorganisms and destroy their structures, thus achieving the effect of disinfection and sterilization.
The principle of disinfection and sterilization of plasma sterilizer is based on plasma technology, which mainly includes the following aspects:
1. Air Ionization
Plasma sterilizers ionize oxygen or nitrogen by ionizing the oxygen molecules or nitrogen molecules into positive and negative ions, which form plasma. These plasmas spread rapidly in the air through the action of a strong electric field, and at the same time come into contact with airborne bacteria, viruses and other microorganisms, destroying them.
2. oxidizing reaction?
The plasma produced by the plasma sterilizer in the air will have an oxidizing reaction with oxygen, producing a large number of oxidants, such as O, O3 and so on. These oxidants can oxidize and destroy the membrane structure of microorganisms and the proteins and nucleic acids inside the cells, so as to achieve the effect of disinfection and sterilization.
3. Photocatalytic reaction
Plasma disinfector can also disinfect and sterilize by photocatalytic reaction. The electrons generated by the plasma will combine with the oxygen molecules on the surface of the photocatalytic material to form reactive oxygen species, such as hydroxyl free (?OH), superoxide radical (O2?-), etc. These reactive oxygen species have a strong oxidizing effect, and can destroy the cell membrane and DNA of microorganisms, etc., thus achieving the effect of disinfection and sterilization.
4. UV-assisted
The plasma sterilizer can also be sterilized by UV-assisted disinfection. The electrons generated by the plasma interact with the photons generated by the UV light to produce high-energy photons, thus enhancing the disinfection and sterilization effect of the UV light. At the same time, ultraviolet light can also eliminate oxidizing agents such as ozone produced by the plasma to avoid harm to the human body.
Applications of plasma sterilizers
Plasma sterilizers can be widely used to disinfect and sterilize air and object surfaces in the medical, food, beverage, pharmaceutical, electronic, cosmetic and other industries. For example, it can be used in hospitals to sterilize the air and surfaces in operating rooms, wards, ICUs and other areas; in the food and beverage industry to sterilize kitchens, dining tables, tableware, etc.; and in the pharmaceutical, electronics, cosmetics and other industries to sterilize the production plant and equipment.