1. Spathiphyllum (Peace Lily, pictured)
This plant shows up on most lists I have seen, as a tough and hardy plant with numerous air filtering qualities, credited with removing alcohols, acetone, industrial solvent trichloroethylene, benzene (an ingredient used to make dyes, lubricants, rubbers, and detergents), and formaldehyde.
Another low maintenance plant and regular on the lists, the Dracaena is said to be very efficient at removing formaldehyde from the air in your home, as well as other VOCs, including benzene, trichloroethylene, and xylene. One important note is that you should keep it out of reach of any pets, as it can be toxic to animals when ingested.
3. Bamboo Palm
The bamboo palm is another plant said to have a high ability to remove formaldehyde from the air, as well as benzene and trichloroethylene.
4. Snake Plant
According to NASA, the snake plant is one of the best houseplants for absorbing airborne toxins, including formaldehyde, nitrogen oxide, benzene, xylene and trichloroethylene. (You'll notice there are some regulars on the list of household toxins, too) The snake plant is also said to be one of the higher producers of oxygen during the night.
5. Hedera helix (English Ivy)
English Ivy is another popular plant that helps filter toxins in your home's air. It is said to be effective for benzene, formaldehyde, xylene and toluene, and other studies have indicated that English Ivy may help reduce mould in your home.
If you'd like to read more about plants that can help with indoor air quality, here are a few links to get you started: