The ozone air purifier principle is both Ozone and negative ions are nature’s way of cleaning the environment and although they have different functions they complement each other very well. Negatively charged ions are effective in removing pollen, dust, mold spores and other harmful particles from the air and are able to improve mood. However, Ozone is much more effective in removing pollutants and odors, and is a powerful oxidant that kills lower organism like bacteria, mold and viruses. Negative ions are effective in cleaning the air while ozone purifies the whole environment, that is, it cleans more than just the air.