1 research outputs found
<i>In Situ</i> Active Poling of Nanofiber Networks for Gigantically Enhanced Particulate Filtration
Enhancing
the filtration efficiency of air filtering material without
increasing its airflow resistance is a major challenge and of great
significance. In this work, we report a type of active-poled nanofiber
onto which <i>in situ</i> active poling is applied. It results
in significantly enhanced filtration efficiency as well as dust holding
capacity while keeping the airflow resistance constant. Owing to the <i>in situ</i> applied electric field, the nanofibers as well as
the particulates are polarized. As a result, at a poling voltage of
2 kV, the removal efficiency and the quality factor for PM<sub>2.5</sub> are enhanced by 17% and 130%, respectively. More importantly, the
dust holding capacity represents a 3.5-fold enhancement over normal
nanofibers. The approach reported in this work has the potential of
being practically utilized in air purification purposes because it
can bring about not only promoted filtration performance but also
lowered noise and reduced power consumption