Cold catalyst filters are a type of filter used in air purifier that transform VOCs, formaldehyde, benzene and other harmful gases into less-toxic pollutants<\/span>.<\/p>\n They are similar to a catalytic converter<\/a> in the exhaust pipe of a car or other road vehicle, and typically use a metal oxide catalyst that creates an oxidation and a reduction reaction with the harmful gases.<\/span><\/p>\n <\/p>\n <\/p>\n The Molekule air purifier uses a form of cold catalyst filter called Photocatalytic oxidation (PCO) technology.<\/p>\n Review: Is the Molekule Air Purifier As Good as The Claims?\u00a0<\/a><\/p>\n A report by Consumer Reports<\/a> found the air purifier to be one of the worst they’d tested, and the National Advertising Division in the US found<\/a> that there were multiple misleading claims relating to the effectiveness of the PCO technology at ‘destroying’ VOCs and other harmful gases.<\/p>\n The United States Environment Protection Agency states that<\/a> PCO technology’s use in the home is “limited because currently available PCO Gases catalysts are ineffective in destroying gaseous pollutants from indoor air”. They go on to state that “Some PCO cleaners fail to destroy pollutants completely and instead produce new indoor pollutants that may cause irritation of the eyes, throat, and nose”.<\/p>\n <\/p>\n Based on reports from both the the US EPA, Consumer Reports and the National Advertising Commission, cold catalyst PCO technology has not yet been proven effective for use in home or school environments. What’s more, UV lights used in PCO technologies can also produce harmful pollutants such as ozone.<\/p>\n Activated carbon filters have been in use in industry and homes since the beginning of the 20th century. While activated carbon does not destroy harmful gases \u2013 it captures them \u2013 it has been proven effective<\/a> at removing gases such as formaldehyde and benzene from the air.<\/p>\n![\"cold](\"\/wordpress\/wp-content\/uploads\/sites\/9\/2020\/12\/cold-catalyst-air-purifier-filter-like-catalytic-converter-car-300x225.jpg\")
<\/p>\nWhich Air Purifiers Currently Use Cold Catalysts?<\/h3>\n
What Does the US EPA Say About PCO?<\/h3>\n
Are Cold Catalysts an Alternative to Activated Carbon?<\/h3>\n