Gradient Porous Structured MnO₂-Nonwoven Composite: A Binder-Free Polymeric Air Filter for Effective Room-Temperature Formaldehyde Removal.

ABSTRACT: Recently, MnO₂-coated polymeric filters have shown promising performance in room-temperature formaldehyde abatement. However, a commonly known concern of MnO₂/polymer composites is either MnO₂ crystal encapsulation or weak adhesion. This work reports a low-cost high-throughput and green strategy to produce binder-free MnO₂-nonwoven composite air filters. The production approach is energy saving and environmentally friendly, which combines MnO₂ crystal coating on bicomponent polyolefin spunbond nonwovens and subsequent heat immobilizing of crystals, followed by the removal of weakly bonded MnO₂. The binder-free MnO₂-nonwoven composites show firm catalyst-fiber adhesion, a gradient porous structure, and excellent fo

SUBMITTER: Dai Z 

PROVIDER: S-EPMC9231320 | biostudies-literature | 2022 Jun

REPOSITORIES: biostudies-literature