Multiwalled Carbon Nanotube Filters for Toxin Removal from Cigarette Smoke

Sumit Kumar Pandey and coworkers demonstrate a novel filter for cigarettes, fabricated by the insertion of multiwalled carbon nanotubes-(MWCNTs) based thin flexible membrane into the conventional cellulose acetate filter. The developed filter has attractive attributes of high filtering efficiency, lightweight, flexible, cost-effective, and scalable production.The filter shows excellent performance for the removal of PM2.5, having a removal efficiency of ∼99%. It also shows a significant ability to remove nicotine, tar, and toxic heavy metals such as lead, present in cigarette smoke.