An Air purifier works by pulling in air from the surrounding environment and then using a variety of technologies to remove pollutants from that air. These technologies include filters, which physically capture particles such as dust and pollen, and electronic air purifiers, which use electrical charges to attract and neutralize pollutants. Some air purifiers also use ultraviolet (UV) light to destroy pollutants, or activated carbon to absorb harmful gases. Once the pollutants have been removed, the purified air is released back into the room. In this way, an air purifier can help to reduce the levels of pollutants such as dust, mold, smoke, and pet dander in the air, making it easier to breathe and reducing the risk of respiratory problems.

There are several different types of air purifiers available, each of which uses different technologies to remove pollutants from the air. 

Here is a brief overview of some of the most common types of air purifiers:

Filters: These are the most common type of air purifier, and they work by physically trapping pollutants as air passes through the filter. There are several different types of filters, including mechanical filters, which capture particles using a mesh or other physical barrier, and electrostatic filters, which use an electrical charge to attract and capture particles.

Electronic air purifiers: These use an electrical charge to attract and neutralize pollutants in the air. They work by emitting a stream of ions, which attach to particles in the air and cause them to become heavy enough to fall to the ground.

UV light purifiers: These use UV light to destroy pollutants in the air. UV light breaks down the molecular structure of the pollutants, rendering them harmless.

Activated carbon purifiers: These use a special type of carbon that has been treated with oxygen to create a highly porous material. Carbon is able to absorb a wide range of pollutants, including gases and odors.

Ozone generators: These produce ozone, which is a highly reactive gas that can destroy pollutants in the air. However, ozone can be harmful to humans and pets, so it is important to use these devices with caution.

Overall, air purifiers can be an effective way to improve the air quality in your home or office by reducing the levels of pollutants in the air. However, it is important to choose the right type of air purifier for your needs and to follow the manufacturer's instructions for use and maintenance.