Gas adsorption filter using layer-by-layer sequential adsorption method for the protection of sensitive gas sensor

摘要

Chemical filter for toxic gases were fabricated by depositing the layer-by-layer self-assembly polyelectrolyte film on the surface of polyester nonwoven fabric. The fabricated filter were very effective to reduce the interference from H2S, NO2, Cl2, HCl, and SO2. It was found that the filter was very effective to protect gas sensors.