Unknown

Dataset Information

0

Ferroelectric PVDF nanofiber membrane for high-efficiency PM0.3 air filtration with low air flow resistance


ABSTRACT: The significant public health concerns related to particulate matter (PM) air pollutants and the airborne transmission of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) have led to considerable interest in high-performance air filtration membranes. Highly ferroelectric polyvinylidene fluoride (PVDF) nanofiber (NF) filter membranes are successfully fabricated via electrospinning for high-performance low-cost air filtration. Spectroscopic and ferro-/piezoelectric analyses of PVDF NF show that a thinner PVDF NF typically forms a ferroelectric β phase with a confinement effect. A 70-nm PVDF NF membrane exhibits the highest fraction of β phase (87%) and the largest polarization behavior from piezoresponse force microscopy. An ultrathin 70-nm PVDF NF membrane exhibits a high PM0.3 filtration efficiency of 97.40% with a low pressure drop of 51 Pa at an air flow of 5.3 cm/s owing to the synergetic combination of the slip effect and ferroelectric dipole interaction. Additionally, the 70-nm PVDF NF membrane shows excellent thermal and chemical stabilities with negligible filtration performance degradation (air filtration efficiency of 95.99% and 87.90% and pressure drop of 55 and 65 Pa, respectively) after 24 h of heating at 120 °C and 1 h immersion in isopropanol. Graphical Abstract ga1

SUBMITTER: Bui T 

PROVIDER: S-EPMC8800002 | biostudies-literature |

REPOSITORIES: biostudies-literature

Similar Datasets

| S-EPMC6780504 | biostudies-literature
| S-EPMC6644595 | biostudies-literature
| S-EPMC8513023 | biostudies-literature
| S-EPMC6117698 | biostudies-literature
| S-EPMC6956291 | biostudies-literature
| S-EPMC5464643 | biostudies-literature
| S-EPMC6359095 | biostudies-literature
| S-EPMC5225417 | biostudies-other
| S-EPMC7108370 | biostudies-literature
| S-EPMC6957606 | biostudies-literature